Engine Controls - System/component Tests - 2.5l, 3.0l, 3.3l & 3.5l Chrysler New Yorker XIV

INTRODUCTION

Before testing separate components or systems, perform procedures in appropriate article

1. «BASIC TESTING - 2.5L V6»(ref-11029)
2. «BASIC TESTING - 3.0L»(ref-11031)
3. «BASIC TESTING - 3.3L»(ref-11033)
4. «BASIC TESTING - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-basic-testing-35l)

Since many computer-controlled and monitored components set a trouble code if they malfunction, also perform procedures in appropriate article

1. «TESTS W/CODES - 2.5L V6»(ref-11011)
2. «TESTS W/CODES - 3.0L»(ref-11014)
3. «TESTS W/CODES - 3.3L»(ref-11017)
4. «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)

Note. Testing individual components does not isolate shorts or opens. Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.

Turbocharger Pressure Check

1. Disconnect turbocharger pressure Black control hose at wastegate solenoid valve and plug nipple. Attach pressure gauge to Black hose.
2. Drive vehicle with an assistant and accelerate engine, in 2nd gear, to greater than 3500 RPM. Have assistant measure turbocharger pressure when pressure gauge stabilizes. Pressure gauge should read 6.4-14.7 psi (.45-1.0 kg/cm 2 ).
3. If pressure gauge reading is more than specification, check for a malfunction of wastegate actuator, wastegate valve and a disconnected or cracked turbocharger wastegate actuator hose. If pressure gauge reading is less than specification, check for a malfunction of wastegate actuator, pressure leaks or a faulty turbocharger. Repair or replace components as necessary.

Wastegate Pressure Control System Test

1. Disconnect Black control hose at wastegate solenoid. Plug Black control hose. Connect a hand vacuum pump to wastegate solenoid nipple which Black control hose was disconnected from.
2. With ignition off, using hand vacuum pump, apply vacuum to wastegate solenoid. Wastegate solenoid should hold vacuum. If wastegate solenoid does not hold vacuum, replace wastegate solenoid.
3. Start engine and run until normal operating temperature is reached. With engine idling, vacuum should leak. If vacuum leaks, pressure control system is functioning properly. If vacuum does not leak, replace wastegate solenoid.

Wastegate Solenoid Valve

1. Disconnect wastegate solenoid valve electrical connector and vacuum hose. Connect a hand-held vacuum pump to wastegate solenoid valve hose vacuum nipple "A". (Scheme 30) Apply vacuum. If vacuum holds, replace wastegate solenoid valve. If vacuum does not hold, go to next step.
2. With wastegate solenoid valve electrical connector disconnected, apply battery voltage to wastegate solenoid valve terminals. Apply vacuum with hand-held vacuum pump to solenoid nipple "A". If vacuum does not hold, replace wastegate solenoid valve. If wastegate solenoid valve holds vacuum, go to next step.
3. Using an ohmmeter, check wastegate solenoid valve resistance. Connect ohmmeter leads between wastegate solenoid valve terminals. Ohmmeter should read 36-44 ohms at 68°F (20°C). If resistance is not within specification, replace wastegate solenoid valve.

Scheme 30

Turbocharger Air By-Pass Valve

1. Air by-pass valve is located on air inlet ducting and is identifiable by having one vacuum hose connection. Remove air by-pass valve. (Scheme 31)
2. Check if air by-pass valve is closed. If air by-pass valve is open, replace valve. If air by-pass valve is closed, go to next step.
3. Connect a hand-held vacuum pump to air by-pass valve vacuum fitting. Apply 16 in. Hg vacuum. Valve should start to open when vacuum is applied. If valve does not start to open, replace air by-pass valve.

Scheme 31

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

Turn ignition off. Disconnect Engine Coolant Temperature (ECT) sensor connector. For ECT sensor location, see ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION table. Using a DVOM, measure resistance between ECT sensor terminals. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE table.

ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION (1)

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Avenger & Sebring (SOHC)

1. Disconnect front or rear heated Oxygen Sensor (O2S) connector. Using a DVOM, check for continuity between heated O2S connector terminals No. 3 and 4. (Scheme 32) If continuity is present, go to next step. If continuity is not present, replace heated O2S. CAUTION: Use caution when connecting jumper wires to heated O2S connector. Heated O2S can be damaged if jumper wires are improperly connected.
2. Start engine and run until normal operating temperature is reached. Using a jumper wire, connect heated O2S connector terminal No. 3 to positive battery terminal. Using another jumper wire, connect heated O2S connector terminal No. 4 to negative battery terminal. NOTE: Repeatedly racing engine causes air/fuel ratio to go rich.
3. Connect a DVOM between heated O2S connector terminals No. 1 and 2. (Scheme 32) While repeatedly racing engine, observe heated O2S voltage. While racing engine, DVOM should display.6-1.0 volt. If DVOM does not display.6-1.0 volt, heated O2S is defective. Replace heated O2S. If DVOM displays.6-1.0 volt, heated O2S is functioning properly.

Scheme 32

Scheme 33

Avenger, Sebring

1. Disconnect front heated Oxygen Sensor (O2S) connector. Using a DVOM, check for continuity between front heated O2S connector terminals No. 3 and 4. (Scheme 32) If continuity is present, go to next step. If continuity is not present, replace front heated O2S. CAUTION: Use caution when connecting jumper wires to front heated O2S connector. Front heated O2S can be damaged if jumper wires are improperly connected.
2. Start engine and run until normal operating temperature is reached. Using a jumper wire, connect front heated O2S connector terminal No. 3 to positive battery terminal. Using another jumper wire, connect front heated O2S connector terminal No. 4 to negative battery terminal. NOTE: Repeatedly racing engine causes air/fuel ratio to go rich.
3. Connect a DVOM between front heated O2S connector terminals No. 1 and 2. (Scheme 32) While repeatedly racing engine, observe front heated O2S voltage. While racing engine, DVOM should display.6-1.0 volt. If DVOM does not display.6-1.0 volt, front heated O2S is defective. Replace front heated O2S. If DVOM displays.6-1.0 volt, front heated O2S is functioning properly.

1. Disconnect rear heated Oxygen Sensor (O2S) connector. Using a DVOM, check for continuity between rear heated O2S connector terminals No. 1 and 2. (Scheme 32) If continuity is present, go to next step. If continuity is not present, replace rear heated O2S. NOTE: Repeatedly racing engine causes air/fuel ratio to go rich.
2. Using a scan tool, observe rear heated O2S operation (voltage). While repeatedly racing engine, observe rear heated O2S voltage. While racing engine, scan tool should display.6-1.0 volt. If scan tool does not display.6-1.0 volt, rear heated O2S is defective. Replace rear heated O2S. If DVOM displays.6-1.0 volt, rear heated O2S is functioning properly.

Cirrus, Concorde, Intrepid, LHS, New Yorker, Stratus & Vision

1. Turn ignition off. Disconnect left or right heated Oxygen Sensor (O2S) connector. Using a DVOM, check resistance between left or right heated O2S connector terminals No. 3 and 4. (Scheme 34) If resistance is 5-7 ohms, go to next step. If resistance is not 5-7 ohms, replace defective left or right heated O2S.
2. Only heated Oxygen Sensor (O2S) heater circuit is tested. If left or right heated O2S is still suspected of malfunctioning, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)

Scheme 34

Avenger, Cirrus, Sebring & Stratus

Disconnect Intake Air Temperature (IAT) sensor connector. IAT sensor is located in intake plenum. IAT sensor can be identified by sensor body being threaded into intake plenum. Using a DVOM, measure resistance between IAT sensor terminals. See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE table.

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Cirrus & Stratus

1. Turn ignition on with engine off. DO NOT disconnect Manifold Absolute Pressure (MAP) sensor connector. Using a DVOM, check voltage between MAP sensor connector terminals No. 1 and 3. (Scheme 35) Voltage should be 4-5 volts. If voltage is 4-5 volts, go to next step. If voltage is not 4-5 volts, see article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)
2. Start engine and run until normal operating temperature is reached. Using a DVOM, check voltage between MAP sensor connector terminals No. 1 and 3. (Scheme 35) With engine idling, voltage should be 1.5-2.1 volts. If voltage is within specification, MAP sensor is functioning properly. If voltage is not within specification, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)

Scheme 35

Avenger & Sebring

1. Turn ignition off. Disconnect Throttle Position (TP) sensor connector. Using a DVOM, measure resistance between TP sensor connector terminals No. 1 and 3. (Scheme 36) Resistance should be 3.5-6.5 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace TP sensor.
2. Using a DVOM, measure resistance between TP sensor connector terminals No. 2 and 3. (Scheme 36) While observing DVOM, slowly open throttle to Wide Open Throttle (WOT). Resistance should change smoothly. If resistance does not change smoothly, replace TP sensor. If resistance changes smoothly, TP sensor is functioning properly.

Scheme 36

Concorde, Intrepid, LHS, New Yorker & Vision

1. Turn ignition on. DO NOT disconnect Throttle Position (TP) sensor connector. Using a DVOM, measure voltage on center terminal of TP sensor connector. Voltage should be more than .6 volt. If voltage is more than .6 volt, go to next step. If voltage is not more than .6 volt, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)
2. While observing DVOM, slowly open throttle to Wide Open Throttle (WOT). Voltage should smoothly increase as throttle is opened. At WOT, voltage should be less than 4.5 volts. If voltage does not change smoothly or is more than 4.5 volts at WOT, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)

If voltage changes smoothly and is less than 4.5 volts at WOT, TP sensor is functioning properly.

1. Turn ignition on. DO NOT disconnect Throttle Position (TP) sensor connector. Using a DVOM, measure voltage on center terminal of TP sensor connector. Voltage should be approximately .5 volt. If voltage is approximately .5 volt, go to next step. If voltage is not approximately .5 volt, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)
2. While observing DVOM, slowly open throttle to Wide Open Throttle (WOT). Voltage should smoothly increase as throttle is opened. At WOT, voltage should be approximately 3.7 volts. If voltage does not change smoothly or is not approximately 3.7 volts at WOT, see appropriate article in ENGINE PERFORMANCE: «TESTS W/CODES - 2.5L V6»(ref-11011) «TESTS W/CODES - 3.0L»(ref-11014) «TESTS W/CODES - 3.3L»(ref-11017) «TESTS W/CODES - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-tests-wcodes-35l)

If voltage changes smoothly and is approximately 3.7 volts at WOT, TP sensor is functioning properly.

Turn ignition off. Disconnect Idle Air Control (IAC) motor connector. Using a DVOM, measure resistance between IAC motor connector terminals No. 1 and 4, then between terminals No. 2 and 3. (Scheme 37) See IDLE AIR CONTROL (IAC) MOTOR RESISTANCE table. If resistance is within specification, IAC motor is okay. If resistance is not within specification, replace IAC motor.

IDLE AIR CONTROL (IAC) MOTOR RESISTANCE

Scheme 37

AUTO SHUTDOWN (ASD) & FUEL PUMP RELAYS

Note. Auto Shutdown (ASD) and fuel pump relays are tested using the same procedures.

1. Turn ignition off. Remove Auto Shutdown (ASD) relay or fuel pump relay. Using a DVOM, measure resistance between relay terminals No. 85 and 86. (Scheme 39) Resistance should be 70-80 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace relay.
2. Using a DVOM, check for continuity between relay terminals No. 30 and 87A. (Scheme 39) Continuity should be present. If continuity is present, go to next step. If continuity is not present, replace relay.
3. Using a DVOM, check for continuity between relay terminals No. 30 and 87. (Scheme 39) Continuity should not be present. If continuity is not present, go to next step. If continuity is present, replace relay.
4. Using a jumper wire, ground relay terminal No. 85. (Scheme 39) Using another jumper wire, apply battery voltage to relay terminal No. 86. Relay should activate. When relay activates, DVOM should display infinity between relay terminals No. 30 and 87A. If relay activated and DVOM displayed infinity, relay is functioning properly. If relay did not activate or DVOM did not display infinity, replace relay.

Scheme 38

Scheme 39

1. Remove Multi-Point Fuel Injection (MFI) or fuel pump relay. Using a DVOM, measure resistance between relay terminals No. 4 and 6. (Scheme 40) Resistance should be 35-75 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace relay.
2. Using a jumper wire, connect relay terminal No. 6 to positive battery terminal. Using another jumper wire, connect relay terminal No. 4 to negative battery terminal. (Scheme 40)
3. Relay should activate. When relay activates, DVOM should display continuity between relay terminals No. 2 and 8. If relay activated and DVOM displayed continuity, relay is functioning properly. If relay did not activate or DVOM did not display continuity, replace relay.
4. Disconnect jumper wire from battery negative terminal. Relay should de-energize. DVOM should show infinity. If DVOM displays infinity, relay is functioning properly. If DVOM does not display infinity, replace relay.

Scheme 40

Electric EGR Transducer Solenoid (Avenger & Sebring)

1. Disconnect electric EGR transducer solenoid valve electrical connector and vacuum hoses. Identify vacuum hoses for reassembly. Electric EGR transducer solenoid valve is located next to air intake ducting in engine compartment. (Scheme 41)
2. Plug electric EGR transducer solenoid valve nipple "A". Connect a hand-held vacuum pump to electric EGR transducer solenoid valve hose vacuum nipple "B". (Scheme 49) Connect a positive pressure type hand-held pump to electric EGR transducer solenoid valve nipple "C". (Scheme 49)
3. Using jumper wires, connect electric EGR transducer solenoid valve to battery voltage. With battery voltage applied to solenoid valve, apply positive pressure to solenoid valve nipple "C". (Scheme 49) Apply vacuum to solenoid valve nipple "B". Vacuum should leak. If vacuum leaks, go to next step. If vacuum does not leak, replace electric EGR transducer solenoid valve.
4. Release positive pressure from solenoid valve nipple "C". With battery voltage still applied, apply vacuum to solenoid valve nipple "B". (Scheme 49) Vacuum should hold. If vacuum holds, go to next step. If vacuum does not hold, replace electric EGR transducer solenoid valve.
5. Disconnect jumper wire from battery. Apply vacuum to solenoid valve nipple "B". (Scheme 49) Vacuum should hold. If vacuum holds, go to next step. If vacuum does not hold, replace electric EGR transducer solenoid valve.
6. Using a DVOM, measure resistance across electric EGR transducer solenoid valve terminals. See ELECTRIC EGR TRANSDUCER SOLENOID VALVE RESISTANCE table. If resistance is not within specification, replace electric EGR transducer solenoid valve. If resistance is within specification, electric EGR transducer solenoid valve is functioning properly.

ELECTRIC EGR TRANSDUCER SOLENOID VALVE RESISTANCE

Scheme 41

Scheme 42

Scheme 43

1. Disconnect evaporative emission purge solenoid valve electrical connector and vacuum hoses. Identify vacuum hoses for reassembly. On Avenger and Sebring, evaporative emission purge solenoid is located near evaporative emission canister. (Scheme 43)
2. Connect a hand-held vacuum pump to evaporative emission purge solenoid valve hose vacuum nipple "A". (Scheme 44)or (Scheme 49). Apply vacuum to solenoid. Vacuum should hold. If vacuum holds, go to next step. If vacuum does not hold, replace evaporative emission purge solenoid valve.
3. Using jumper wires, connect evaporative emission purge solenoid valve to battery voltage. With battery voltage applied to solenoid valve, apply vacuum to solenoid valve nipple "A". (Scheme 44)or (Scheme 49). Vacuum should leak. If vacuum leaks, go to next step. If vacuum does not leak, replace evaporative emission purge solenoid valve.
4. Using a DVOM, measure resistance across evaporative emission purge solenoid valve terminals. See EVAPORATIVE EMISSION PURGE SOLENOID VALVE RESISTANCE table. If resistance is not within specification, replace evaporative emission purge solenoid valve. If resistance is within specification, evaporative emission purge solenoid valve is functioning properly.

EVAPORATIVE EMISSION PURGE SOLENOID VALVE RESISTANCE

Scheme 44

Pulsed Secondary Air Injection Solenoid (Avenger DOHC & Sebring DOHC)

1. Disconnect pulsed secondary air injection solenoid valve electrical connector, vacuum hose and air injection hoses. Identify hoses for reassembly. Pulsed secondary air injection solenoid is located near air intake ducting. (Scheme 45)
2. Connect a hand-held vacuum pump to pulsed secondary air injection solenoid valve hose vacuum nipple. (Scheme 46) Apply vacuum 20 in. Hg to solenoid. Vacuum should hold with no ventilation between solenoid ports "A" and "B". If vacuum holds with no ventilation between solenoid ports, go to next step. If vacuum does not hold or ventilation does occur between solenoid ports, replace pulsed secondary air injection solenoid valve.
3. Using jumper wires, connect pulsed secondary air injection solenoid valve to battery voltage. With battery voltage applied to solenoid valve, apply 19 in. Hg vacuum to solenoid valve nipple. (Scheme 45) Vacuum should leak gradually and ventilation should be present between solenoid ports "A" and "B" while vacuum is maintained.
4. If vacuum leaks gradually and ventilation is present between solenoid ports as vacuum is maintained, pulsed secondary air injection solenoid is functioning properly. If vacuum does not leak gradually or ventilation is not present between solenoid ports as vacuum is maintained, replace pulsed secondary air injection solenoid.

PULSED SECONDARY AIR INJECTION SOLENOID RESISTANCE

Scheme 45

Scheme 46

Turbocharger Wastegate Solenoid

See AIR INDUCTION SYSTEMS .

Avenger, Cirrus, Concorde, Intrepid, LHS, New Yorker, Sebring, Stratus & Vision

Turn ignition off. Disconnect injector electrical connector. Using a DVOM, measure resistance across injector terminals. See INJECTOR RESISTANCE table. If resistance is within specification, injector coils are okay. If resistance is not within specification, replace injector.

INJECTOR RESISTANCE

IGNITION SYSTEM

Note. For basic ignition checks, see appropriate article

1. «BASIC TESTING - 2.5L V6»(ref-11029)
2. «BASIC TESTING - 3.0L»(ref-11031)
3. «BASIC TESTING - 3.3L»(ref-11033)
4. «BASIC TESTING - 3.5L»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-basic-testing-35l)

Acclaim, Spirit & LeBaron

Disconnect ignition coil electrical connections. Using a DVOM, measure resistance of primary and secondary coil circuits. See IGNITION COIL RESISTANCE table. If resistance is within specification, ignition coil is okay. If resistance is not within specification, replace ignition coil.

IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)

Cirrus & Stratus (V6)

1. Turn ignition off. Disconnect distributor 2-pin connector and coil wire. Using a DVOM, measure resistance of primary and secondary coil circuits. Measure primary circuit resistance between distributor 2-pin connector terminals (on distributor).
2. Measure secondary circuit resistance between each terminal of distributor 2-pin connector (on distributor) and coil tower. See IGNITION COIL RESISTANCE table. If resistance is within specification, ignition coil is okay. If resistance is not within specification, replace ignition coil.

1. Turn ignition off. Disconnect ignition coil electrical connections. Using a DVOM, measure resistance of primary and secondary coil circuits. Measure primary circuit resistance between battery terminal and terminal for cylinders being checked. (Scheme 47)
2. Measure secondary circuit resistance across coil towers. (Scheme 47) See IGNITION COIL RESISTANCE table. If resistance is within specification, ignition coil is okay. If resistance is not within specification, replace ignition coil.

Scheme 47

A resistor is built into distributor cap. Remove distributor cap from engine. Disconnect coil wire. Using a DVOM, measure resistance between distributor cap center button and coil terminal. Resistance should be 5000 ohms. If resistance is not within specification, replace distributor cap. If resistance is within specification, distributor cap is okay.

1. Disconnect purge control vacuum hose from throttle body. (Scheme 48)and 31. Connect a hand-held vacuum pump to purge control vacuum hose. Plug vacuum nipple on throttle body. Ensure engine is at operating temperature.
2. Turn engine off. Start engine and let it idle. Within 10 seconds after starting engine, apply 16 in. Hg vacuum to purge control vacuum hose. Vacuum should be maintained. If vacuum is maintained, go to next step. If vacuum is not maintained, repair evaporative emission system.
3. With engine idling at operating temperature for more than 10 seconds, apply 16 in. Hg vacuum to purge control vacuum hose. Vacuum should leak. If vacuum leaks, go to next step. If vacuum does not leak, repair evaporative emission system.
4. Remove plug from nipple on throttle body. Connect a hand-held vacuum pump to nipple on throttle body. Start engine. Raise engine speed and observe vacuum gauge. Vacuum should remain constant regardless of engine speed. If vacuum remains constant regardless of engine speed, evaporative emission system is functioning properly. If no vacuum is generated, clean clogged throttle body vacuum port.

Scheme 48

Scheme 49

EXHAUST GAS RECIRCULATION (EGR) SYSTEM

Note. Models with 2.5L flexible fuel system or 3.0L manual transmission are not equipped with an Exhaust Gas Recirculation (EGR) System.

Acclaim, LeBaron & Spirit

1. Inspect hose connections between throttle body, intake manifold, EGR solenoid and transducer, and EGR valve. Replace hardened, cracked and damaged hoses.
2. Ensure engine coolant temperature is more than 150°F (66°C). Put transmission in Neutral. Allow engine to idle for approximately 70 seconds. Suddenly accelerate engine to approximately 2000 RPM, but not more than 3000 RPM. EGR valve stem should move when accelerating engine. Repeat test several times to confirm EGR valve stem movement. If EGR valve stem moves, EGR control system is functioning properly, go to next step. If EGR valve stem does not move, see «EGR DIAGNOSTIC CHART»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l__egr-diagnostic-chart) .
3. Remove vacuum hose from EGR valve. Connect a hand-held vacuum pump to EGR valve. With engine idling at operating temperature, slowly apply vacuum to EGR valve. When vacuum reaches 2.0-3.5 in. Hg, engine idle will become rough or engine may stall. If engine idle does not become rough or engine does not stall, go to next step. If engine idle becomes rough or engine stalls, EGR system is functioning properly.
4. Remove EGR valve and EGR tube. Inspect EGR valve and EGR tube for plugged passages. Also check intake manifold inlet passage. Repair or replace components as necessary. If necessary to replace EGR valve or EGR solenoid/transducer assembly, EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.

1. Inspect hose connections between intake manifold, EGR solenoid and transducer, and EGR valve. Replace hardened, cracked and damaged hoses.
2. Ensure engine coolant temperature is more than 170°F (77°C). Put transmission in Neutral. Allow engine to idle for approximately 70 seconds. Suddenly accelerate engine to approximately 2000 RPM, but not more than 3000 RPM. EGR valve stem should move when accelerating engine. Repeat test several times to confirm EGR valve stem movement.
3. If EGR valve stem moves, EGR control system if functioning properly, go to next step. If EGR valve stem does not move, verify EGR solenoid operation. See «SOLENOIDS»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l) under MOTORS, RELAYS & SOLENOIDS. After verifying solenoid operation, go to next step.
4. With engine idling at operating temperature, slowly apply vacuum to EGR valve. When vacuum reaches approximately 3.5 in. Hg, engine idle will become rough or engine may stall. If engine idle does not become rough or engine does not stall, go to next step. If engine idle becomes rough or engine stalls, EGR system is functioning properly.
5. Turn engine off. Remove EGR valve from vehicle. Connect a hand-held vacuum pump to EGR valve. Apply 20 in. Hg to EGR valve. If vacuum is maintained, go to next step. If vacuum is not maintained, replace EGR valve.
6. Apply 1.6 in. Hg (DOHC) or 2.5 in. Hg (SOHC) or less to EGR valve. Air should not pass through EGR passages. If air does not pass through EGR passages, go to next step. If air passes through EGR passages, replace EGR valve.
7. Apply 8.7 in. Hg (DOHC) or 6 in. Hg (SOHC) or more to EGR valve. Air should pass through EGR passages. If air passes through EGR passages, go to next step. If air does not pass through EGR passages, replace EGR valve.
8. Remove EGR vacuum hose from intake manifold. Connect a vacuum gauge to intake manifold nipple. Start engine. Gradually raise engine speed and observe vacuum gauge. Vacuum signal should remain fairly constant. If vacuum signal remains fairly constant, EGR system is functioning properly. If vacuum signal is not fairly constant, inspect intake manifold inlet passage. Repair or replace components as necessary.

Concorde, Intrepid & Vision (3.3L)

1. Inspect hose connections between intake manifold, EGR solenoid and transducer, and EGR valve. Replace hardened, cracked and damaged hoses.
2. Ensure engine coolant temperature is more than 170°F (77°C). Put transmission in Neutral. Allow engine to idle for approximately 70 seconds. Suddenly accelerate engine to approximately 2000 RPM, but not more than 3000 RPM. EGR valve stem should move when accelerating engine. Repeat test several times to confirm EGR valve stem movement. If EGR valve stem moves, EGR control system if functioning properly, go to next step. If EGR valve stem does not move, see «EGR DIAGNOSTIC CHART»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l__egr-diagnostic-chart) .
3. Remove vacuum hose from EGR valve. Connect a hand-held vacuum pump to EGR valve. With engine idling at operating temperature, slowly apply vacuum to EGR valve. When vacuum reaches 2.0-3.5 in. Hg, engine idle will become rough or engine may stall. If engine idle does not become rough or engine does not stall, go to next step. If engine idle becomes rough or engine stalls, EGR system is functioning properly.
4. Remove EGR valve and EGR tube. Inspect EGR valve and EGR tube for plugged passages. Also check intake manifold inlet passage. Repair or replace components as necessary. If necessary to replace EGR valve or EGR solenoid/transducer assembly, EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.

Concorde, Intrepid, LHS, New Yorker & Vision (3.5L)

1. Inspect hose connections between intake manifold, EGR solenoid/transducer assembly, and EGR valve. Replace hardened, cracked and damaged hoses.
2. Disconnect vacuum supply hose from EGR transducer solenoid. Connect a vacuum "T" in EGR transducer solenoid vacuum supply hose. Connect a vacuum gauge to vacuum "T". Start engine. Vacuum gauge should indicate a minimum of 15 in. Hg vacuum. If vacuum is at least 15 in. Hg, verify EGR solenoid operation. See «SOLENOIDS»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l) under MOTORS, RELAYS & SOLENOIDS. After verifying solenoid operation, go to next step. If vacuum is not at least 15 in. Hg, repair or replace vacuum hoses as necessary.
3. Disconnect vacuum hose and backpressure hose from EGR transducer. Disconnect EGR solenoid electrical connector. Plug EGR transducer output port. (Scheme 50) Apply 1-2 psi air pressure to EGR transducer backpressure port. Using a hand-held vacuum pump, apply a minimum of 12 in. Hg vacuum to EGR transducer vacuum supply port. (Scheme 50)
4. Vacuum should momentarily hold, then slowly bleed off. If vacuum momentarily holds, then slowly bleeds off, go to next step. If vacuum does not momentarily hold, then slowly bleed off, replace EGR valve and EGR solenoid/transducer assembly. EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
5. Remove EGR valve from engine. Using a hand-held vacuum pump, apply 15 in. Hg to EGR valve. Check for EGR valve stem movement. If EGR valve stem moves, go to next step. If EGR valve stem does not move, replace EGR valve and EGR solenoid/transducer assembly. EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
6. If EGR valve stem moves approximately 1/8" (3 mm), maintain vacuum to EGR valve. EGR valve stem should remain open for approximately 30 seconds or more. If EGR valve stem remains open as specified, go to next step. If EGR valve leaks vacuum sooner, replace EGR valve and EGR solenoid/transducer assembly. EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
7. At this time all components are functioning properly. If EGR system is still not functioning properly, inspect port in rear of cylinder head for blockage and repair as necessary. Also check EGR backpressure tube for blockage and repair as necessary.

Scheme 50

1. Inspect hose connections between intake manifold, EGR solenoid/transducer assembly, and EGR valve. Replace hardened, cracked and damaged hoses.
2. Ensure engine coolant temperature is more than 170°F (77°C). Remove vacuum hose from EGR valve. (Scheme 51) Connect a hand-held vacuum pump to EGR valve. With engine idling at operating temperature, slowly apply vacuum to EGR valve. When vacuum reaches 2.0-3.5 in. Hg, engine idle will become rough or engine may stall. If engine idle does not become rough or engine does not stall, go to next step. If engine idle becomes rough or engine stalls, go to step 4).
3. Remove EGR valve and EGR tube. Inspect EGR valve and EGR tube for plugged passages. Also check intake manifold inlet passage. Repair or replace components as necessary.
4. Turn engine off. Connect a hand-held vacuum pump to EGR valve. Apply 15 in. Hg vacuum to EGR valve. If EGR valve holds vacuum, go to next step. If EGR valve does not hold vacuum, replace EGR valve and EGR solenoid/transducer assembly. (Scheme 51) EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
5. Disconnect EGR valve backpressure vacuum hose from base of EGR valve. (Scheme 51) Remove air inlet tube from throttle body. Using compressed air regulated to 50 psi, apply 50 psi to metal backpressure fitting at base of EGR valve. Open and hold throttle valve to Wide Open Throttle (WOT). Air should not be heard coming from intake manifold.
6. If air cannot be heard from intake manifold, go to next step. If air can be heard from intake manifold poppet valve is leaking in base of EGR valve. DO NOT attempt to clean EGR valve. Replace EGR valve and EGR solenoid/transducer assembly. (Scheme 51) EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
7. Verify EGR solenoid operation. See «SOLENOIDS»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l) under MOTORS, RELAYS & SOLENOIDS. After verifying solenoid operation, go to next step. If solenoid is not operating, replace EGR valve and EGR solenoid/transducer assembly. (Scheme 51) EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
8. Disconnect backpressure hose from EGR transducer. (Scheme 51) Connect a hand-held vacuum pump to EGR transducer bottom nipple. Apply 10 in. Hg vacuum. If vacuum holds, go to next step. If vacuum does not hold, replace EGR valve and EGR solenoid/transducer assembly. EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.
9. Reconnect backpressure hose to EGR transducer. Remove vacuum hose from EGR solenoid inlet nipple. (Scheme 51) Connect a vacuum gauge to disconnected vacuum hose. Start engine and allow to reach normal operating temperature. Hold engine speed at 1500 RPM. Vacuum gauge should indicate full manifold vacuum. If full manifold vacuum is present, go to next step. If full manifold vacuum is not present, replace vacuum hose or repair plugged manifold nipple as necessary.
10. Reconnect vacuum hose to EGR solenoid. Disconnect vacuum hose between EGR solenoid and EGR valve at EGR solenoid. (Scheme 51) Connect a vacuum gauge to EGR solenoid nipple. Disconnect EGR solenoid electrical connector (this will simulate an open circuit). Start engine and allow to reach operating temperature.
11. Raise and hold engine speed at 2000 RPM. As a temporary backpressure is built, vacuum gauge should indicate full manifold vacuum. As backpressure drops off and engine speed is still at 2000 RPM, vacuum gauge reading should be low. A low reading is normal. Let engine idle. At idle vacuum gauge reading will be erratic. An erratic reading is normal.
12. If vacuum gauge responds as specified, EGR system if functioning properly. If vacuum gauge did not respond as specified, replace EGR valve and EGR solenoid/transducer assembly. (Scheme 51) EGR valve and EGR solenoid/transducer assembly must be replaced together because they are calibrated to match each other.

Scheme 51

EGR DIAGNOSTIC CHART

Note. Ensure correct diagnostic chart is used. The EGR solenoid/transducer assembly may be referred to as Electric EGR Transducer (EET) in diagnostic charts.

Scheme 52

PCV Valve

Disconnect hose from PCV valve. Remove PCV valve from valve cover. Reconnect hose to PCV valve. Start engine and let idle. Put finger over opening of PCV valve. Ensure a vacuum is felt with finger. If vacuum is not felt, clean or replace PCV valve as necessary.

MISCELLANEOUS CONTROLS

Note. Although some of the controlled devices listed here are not technically engine performance components, they can affect drive-ability if they malfunction.

1. Open hood and start engine. Listen for excessive underhood exhaust noise. Inspect rubber hose between air aspirator valve and air cleaner assembly. (Scheme 53) If rubber hose connections leak and hose has not hardened, install hose clamps.
2. If excessive underhood exhaust noise is present or rubber hose is hardening, this indicates air aspirator valve is malfunctioning. Replace air aspirator valve. Air aspirator valve is not repairable. Inspect joint between air aspirator valve and catalyst tube. (Scheme 53) If joint is leaking exhaust gas, tighten joint to 40 ft. lbs. (54 N.m).
3. Disconnect rubber hose from air aspirator valve. With engine idling and vehicle in Neutral, negative exhaust pulses should be felt at air aspirator valve inlet. If hot exhaust gas is escaping from air aspirator valve inlet, air aspirator valve has failed. Replace air aspirator valve. Air aspirator valve is not repairable.

Scheme 53

Avenger SOHC & Sebring SOHC

1. Start engine and run until coolant temperature is 140°F (60°C) or more. Disconnect pulsed secondary air injection hose from air cleaner. Place a small steel plate over end of hose.
2. Check for secondary air injection system operation immediately after starting engine. Secondary air injection should have air intake. Approximately 20 or more minutes later, secondary air injection should not have air intake.
3. If secondary air injection system does not function properly, verify pulsed secondary air injection solenoid operation. See «SOLENOIDS»(/chrysler/new-yorker/xiv-1994-1996/remont/testing-diagnostics/#engine-controls-systemcomponent-tests-25l-30l-33l-35l) under MOTORS, RELAYS & SOLENOIDS. After verifying solenoid operation, go to next step.
4. Turn engine off. Remove pulsed secondary air injection valve. (Scheme 45) Air should flow from port "A" to "B". (Scheme 54) Air should not flow from port "B" to "A". If secondary air injection valve airflow is not as specified, replace secondary air injection valve.

Scheme 54

See also:
• BASIC TESTING - 3.5L
• TESTS W/CODES - 3.5L
• AIR INDUCTION SYSTEMS
• EGR DIAGNOSTIC CHART