KHLow2008, thanks I did the proceedure and will let you know the results.
HAPPY NEW YEAR.
No, ignition timing cannot be adjusted but it would give you an idea if anything is amiss, a fluctuating mark would mean the PCM is constantly tying to compensate.
After noting your mileage and doing additional research, if you are having idling speed fluctuations or erratic idling, then a computer relearn procedure might help.
1. Make sure all electrical items (A/C, audio, rear window defogger, lights, etc.) Are off.
2. Reset the ECM/PCM with the HDS.
3. Turn the ignition switch ON (II), and wait 2 seconds.
4. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, or until the engine coolant temperature reaches 194 F (90 C).
5. Let the engine idle about 5 minutes with the throttle fully closed.
NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.[/Quote]
Wednesday, January 7th, 2009 AT 4:52 PM