No idle Have trouble getting engine to idle. With push button dash what do we press to set idle speed.

Sounds like maybe air in fuel system, bleed fuel system and try.
are there any trouble codes now or before.
press the helpful button

Light Duty Truck Diesel Engine Diagnosis

Fix Your Non Starting Automotive Engine Like Pro Pictures

What speed control sensor ? Explain . Vehicle speed sensor ?
Speed Control Self-Test Diagnostics
WARNING: This test is a key on engine off (KOEO) test only that is conducted in PARK only with the emergency brake fully engaged.
NOTE: A review of the following test steps is required before carrying out the Self-Test Diagnostic procedure. After entering the diagnostic mode, the module will time out if the mandatory switch sequence is not completed within 5 seconds. If a module time out occurs, the procedure must be reinitiated.

1. Enter the Self-Test Diagnostics by pressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. Five additional flashes at this point indicate a defective speed control actuator. Release the OFF switch.

1. Press and release the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL (for Expedition), ON RESUME, COAST and CANCEL (for Navigator).
   The speed control indicator lamp will flash after each switch is pressed and released. Press and release each switch in the sequence immediately after the indicator light goes out for the previous switch.

1. NOTE: There will be a slight delay when the last button is pressed and released and the lamp flashes.
   A lamp flash with the last button (SET/ACCEL) or CANCEL (for Navigator) indicates that the STATIC test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switches are defective.
   If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

NOTE: If unable to enter self-test, Go To Pinpoint Test D
Flashes Source 2 Flashes BPP defective, circuit is defective, brake applied 3 Flashes Deactivator switch is open or circuit defective

1. Immediately after the STATIC test, the speed control servo does a DYNAMIC test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the DYNAMIC throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns back to the idle position.

1. Return the ignition switch to the OFF position and proceed to the Symptom Chart.

check for vacuum leaks in the system including leaks under the dash. Check idle speed is around 750 -950rpms

Ensure that the engine is warmed up to normal operating temperature and the enrichener knob is pushed all the way in BEFORE adjusting engine idle speed. It is possible for a properly warmed up engine to idle above the normal idle range of 950-1050 RPM with the enrichener knob pulled PARTIALLY OUT. If the bike has no tachometer attach one or attach a DIGITAL MULTIMETER equipped with an RPM INDUCTIVE PICKUP over front spark plug cable to monitor engine RPM. Then start the motorcycle engine and let it run until it reaches normal operating temperature with enrichener knob pushed fully in (enrichener closed). Then set the idle speed to 950-1050 RPM using a special CARBURETOR IDLE ADJUSTER and tip. Turn clockwise to increase idle speed and turn counterclockwise to decrease idle speed. The throttle stop screw in on the right or front side of the CV carb.

Could be a vac leak or other ignition problem.
A vac leak could be covered up by the extra fuel and higher idle speed when the engine is cold. And if it is a gasket leaking the leak can get bigger as the engine warms up.
A faulty plug wire or coil could start failing when hot.
A solid miss-fire should make the check engine light come on and set a trouble code.

Normally the engine has to idle faster because of the extra load of the brake lights when you press on the brakes.. Sounds like your idle speed is a little high. Have someone set your idle speed properly.

Hope this helps you


this is free help...Please take time to rate me

You will need to find the codes that the car is getting. You can do this by entering diagnostics on the dash.
1. Turn the ignition switch ON. [Bruce notes: interestingly, the engine can be on or off]
2. On the cars up to 1995, on the Climate Control panel, press the OFF and WARM buttons simultaneously.

• E -- ECM trouble code
• P -- PCM trouble code
• C -- Current trouble code
• H -- History trouble code
• NO X CODE -- No code present (X represents the system)
• NO X DATA -- Communication lines are not operating (X represents the system)

Is the Recall done ? recall 05S28. Description: Speed Control Deactivation Switch.

You can try the speed control self test
Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

- 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

- 3 flashes - deactivator switch is open or circuit defective.

- 4 flashes - vehicle speed signal is out of range or circuit is defective

4. Immediately (.25 second delay) after the static test, the speed control servo does a dynamic test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the dynamic throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns to the idle position.

5. Return the ignition switch to the OFF position and proceed to the Symptom Chart.

Did you have the recall for the cruise control done ?
recall 05S28. Description: Speed Control Deactivation Switch.

It could be the fuse in the recall harness is blown.

Try the Cruise Control Self test :
----------------------------------
Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

— 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

— 3 flashes - deactivator switch is open or circuit defective.

— 4 flashes - vehicle speed signal is out of range or circuit is defective

4. Immediately (.25 second delay) after the static test, the speed control servo does a dynamic test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the dynamic throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns to the idle position.

5. Return the ignition switch to the OFF position and proceed to the Symptom Chart.
----------------------------

If the Cruise Control does not enter self test, the fuse in the recall harness ( if done ) is most likely blown and needs to be replaced.

When you press the clutch the engine control computer senses the clutch is in and adjusts the idle speed, maybe the idle speed control motor is dirty and sticks, this will almost feel like a skip or miss, do you have any trouble codes?