Engine Controls - Tests W/o Codes - 5.8L Eec-V: Other Ford Pickup F350

NO CRANK

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Preliminary Checks

Check battery connections. Check starter relay connections. Check all fuse links. On A/T models, ensure gearshift is in Park. On M/T models, ensure clutch is fully depressed. If vehicle is equipped with anti-theft devices, ensure system is deactivated.

HARD START/LONG CRANK

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for vacuum leaks. Check fuel quality. Check air cleaner/air intake duct.

STALLS AFTER START

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for vacuum leaks. Check fuel quality. Check for restricted air filter/air intake duct. Check wiring harness connectors.

NO START/NORMAL CRANK

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check fuel quality. Check Inertia Fuel Shutoff (IFS) switch. Check alarm/anti-theft devices. Check wiring harness connectors. Check for disconnected or restricted air intake duct. Check fuses and relays.

SLOW RETURN TO IDLE

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for vacuum leaks. Check throttle linkage operation. Check air intake system. Check throttle body.

ROUGH IDLE

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for vacuum leaks. Check air intake duct. Check air filter. Check primary and secondary ignition wiring harness and components. Check for cracked or missing cooling fan blades.

HIGH IDLE (DIESELS/RUNS ON)

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Note. If engine is overheating, go to ENGINE RUNS HOT symptom. If engine runs cold, go to ENGINE RUNS COLD symptom.

Check for vacuum leaks. Check for carbon build-up on throttle plate. Check throttle linkage operation. Check for binding/sticking cruise control chain. Check air intake duct. Check for leaking intake manifold gasket.

LOW IDLE (STALLS ON DECELERATION)

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check Idle Air Control (IAC) wiring harness connector. Check base timing. Check engine mechanical condition.

HESITATES OR STALLS

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Note. The PCM is equipped with an over RPM/speed limit function. If programmed speed is exceeded, fuel delivery will shut off and DTC P1270 will be set in PCM memory.

Check for vacuum leaks. Check fuel quality. Check for restricted air filter/air intake duct. Check wiring harness connectors.

Check for vacuum leaks. Check fuel quality. Check for restricted air filter/air intake duct. Check wiring harness connectors.

Check vacuum hose routing. Check spark plug wiring for incorrect firing order.

LOSS OF POWER

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Note. The PCM is equipped with an over RPM/speed limit function. If programmed speed is exceeded, fuel delivery will shut off and DTC P1270 will be set in PCM memory.

Verify symptom is reported under normal driving conditions without engine under excessive load conditions. Check vacuum hose routing. Check for restricted air filter. Check wiring harness connectors. Check for obstructed radiator. Check transmission fluid.

SPARK KNOCK

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check vacuum hose routing. Check for restricted air intake system. Check engine oil and fuel quality.

Check for restricted air filter/air intake duct. Check transmission fluid level. Check fuel quality.

EMISSIONS COMPLIANCE

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Canada and some states or metropolitan areas in the United States require periodic idle emission tests. All Ford products have been designed to pass these tests. If a Ford product fails an idle Emission test, it is probable that the engine temperature was not warm and stabilized prior to the test or the vehicle had idled excessively long prior to the test. Before starting any services, verify complaints of idle emission test failure.

The following encompasses most of the emissions measurement modes of current state idle test procedures

1. Ensure engine is at normal operating temperature and all accessories are turned off.
2. Check emissions at idle.
3. Operate engine at 2200-2800 RPM.
4. Check emissions within 30 seconds.
5. Return engine speed to idle.
6. Check emissions within 30 seconds.

If any emission component is changed, Keep-Alive Memory (KAM) should be cleared before repeating state emission test procedure. See the TESTS W/CODES - 5.8L EEC-V article. To relearn adaptive strategy, operate engine at 2500 RPM for one minute. Operate engine at idle speed for 2 minutes.

Check for vacuum leaks/blockage. Check wiring harness connectors.

IMPROPER TRANSMISSION SHIFT

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check transmission fluid level and condition. Check for transmission leaks. Check wiring harness connectors. Check for vehicle modifications. Check for electronic add-on items. Check for misadjusted shift linkage.

HIGH OIL CONSUMPTION

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for external engine oil leaks. Check for proper oil dipstick. Check for proper oil viscosity.

ENGINE RUNS HOT

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check coolant level. Check for coolant leaks. Check fan belt. Check radiator fan connectors. Check water/anti-freeze mixture. Check radiator condition. Check for collapsed/restricted radiator hose. Check radiator cap. Check overflow system.

ENGINE RUNS COLD

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check radiator cooling fan operation.

EXHAUST SMOKE

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Black Smoke (Rich Mixture)

1. Check for restricted air cleaner/air intake duct.
2. Check for restricted fuel return hoses.
3. Check ignition system. See CIRCUIT TEST JD.
4. Check fuel delivery system. See CIRCUIT TEST HC.

Blue Smoke (Burning Oil)

1. Check PCV system. See CIRCUIT TEST HG.
2. Check engine mechanical condition. Check valve guides, valve stems, valve seals, oil drain passages in cylinder heads (Blue smoke on start-up), piston rings and cylinder bores.

White Smoke (Water In Combustion)

1. Check for cylinder head gasket leaks, intake manifold gasket leaks and cracked engine block.

FUEL PUMP ALWAYS ON

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

GAS SMELL

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check fuel system and EVAP system for leaks.

SULFUR SMELL

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check fuel system and EVAP system for leaks.

Squeal, Click Or Chirp

1. Check for low oil level.
2. Check valve train components.
3. Check drive belts.
4. Check EEC-V solenoids.

Hiss

1. Check for cooling system leaks.
2. Check for vacuum leaks.
3. Check for loose spark plugs.
4. Check for air intake leaks.
5. Check for secondary air injection leaks.
6. Check for Evaporative Emission (EVAP) system leaks.

Snap

1. Perform a visual/audible check of secondary ignition system.

Rap Or Roar

1. Check for exhaust leak.
2. Check for secondary air injection leaks.

Knock

1. Check for worn rod/main bearings.
2. Check for loose piston pins.
3. Check piston to cylinder bore clearance.
4. Knock (Detonation) - See SPARK KNOCK under «SYMPTOMS»(ref-23757-S32017211492001010300000) .

CLIMATE CONTROL (LACK OF COOLING)

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Perform a visual inspection of A/C system. Check A/C switches. Check fuses.

CLIMATE CONTROL (A/C ALWAYS ON)

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.

Check for shorted A/C wiring. Check A/C heater control. Check A/C compressor.

A/C DOES NOT GO OFF DURING WOT

Note. For CIRCUIT TESTS and QUICK TEST referenced in this article, see the TESTS W/CODES - 5.8L EEC-V article.