Engine Controls - On-Vehicle Adjustments - Trucks Ford Econoline I

ENGINE MECHANICAL

Note. References to Econoline include Cutaway and RV Cutaway. References to Pickup include Cab & Chassis.

Before performing any on-vehicle adjustments to fuel or ignition systems, ensure engine mechanical condition is okay.

VALVE CLEARANCE

Note. All models are equipped with hydraulic valve lifters; valve adjustment is not required. If valves are noisy or incorrect clearance is suspected, worn components are indicated. Check collapsed valve lifter clearance. See appropriate article in ENGINES in appropriate Mitchell® manual.

GASOLINE ENGINES

Note. EEC-V PCM has 104-pin connector.

Villager

1. Ensure engine is at operating temperature, all accessories are off, and transmission is in Park or Neutral. Set parking brake. Ensure idle speed is correct.
2. Connect timing light to No. 1 spark plug wire. Disconnect Idle Air Control (IAC) wiring harness connector. Start engine. Check base ignition timing. See «IGNITION TIMING»(/ford/econoline/i-1985-2013/remont/adjustments/#engine-controls-on-vehicle-adjustments-trucks) table.
3. If timing is not to specification, loosen distributor hold-down bolt. Adjust timing as necessary. Turn engine off. Reconnect IAC harness connector. Start engine. Ensure advance mechanism functions when engine speed is increased.

All Other Models (EEC-V)

Manufacturer does not recommend checking timing as false readings are common and timing is not adjustable. Timing specification is for reference purposes only. See IGNITION TIMING table.

IGNITION TIMING

7.3L DIESEL ENGINES

Injector timing is controlled through Injector Driver Module (IDM) interface with PCM and no adjustment is possible. If system is not operating properly, complete a thorough basic inspection and self-test to confirm correct operation of sub-system contribution to injector timing. See SELF-DIAGNOSTICS - DIESEL article.

IDLE SPEED & MIXTURE

Note. Idle mixture is not adjustable. If idle mixture is incorrect, see SELF-DIAGNOSTICS - EEC-V article.

EEC-V MODELS

On all EEC-V equipped models, idle speed is controlled by Powertrain Control Module (PCM) and is not adjustable. If engine idle concerns are present, check for contaminated fuel, vacuum leaks and incorrect ignition timing. Ensure throttle bore, EGR system and PCV system are clean. If these are okay, check PCM for Diagnostic Trouble Codes (DTCs). See SELF-DIAGNOSTICS - EEC-V article. If no DTCs exist, go to TROUBLE SHOOTING - NO CODES - EEC-V article.

DIESEL ENGINES

Idle speed adjustment is controlled through Injector Driver Module (IDM) interface with the PCM and no adjustment is possible. If system is not operating properly, complete a thorough basic inspection and self-test to confirm correct operation of sub-system contribution to injector timing. See SELF-DIAGNOSTICS - DIESEL article.

Viliager

Connect a scan tool to the fuse panel Data Link Connector (DLC). Turn the ignition switch to the ON position. Configure the scan tool with the correct year, vehicle, and mode. Measure the Throttle Position (TP) sensor voltage with the throttle valve completely closed. Loosen the TP sensor screws and adjust the TP sensor to a reading of 0.3-0.7 volt. Tighten the TP sensor screws. Ensure that the idle position switch PID reads ON. Run the vehicle until it reaches operating temperature turn off vehicle. Turn the ignition on 5 seconds and off for 5 second. Repeat 20 times.

Except Villager

Note. Throttle Position (TP) sensor on gasoline engines is not adjustable. If TP sensor service is required, see TEST DH in SELF-DIAGNOSTICS - EEC-V article.

Note. Accelerator Pedal (AP) sensor on diesel engines is not adjustable. If AP sensor service is required, see TEST E in SELF-DIAGNOSTICS - EEC-V article.

See also:
• IGNITION TIMING