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17/02/2024 2:23 am
Topic starter
Hey Scotty I have a 1995 gmc sierra 1500 255,000 miles, automatic, has a high idle in park, that when putting into gear causing transmission to jerk while idling above 1,000 to 1,800rpms only when warm up but idles fine when cold. changed Pcv, egr, Iac still does it any thoughts thanks. Ps-does have a service engine soon light that comes on.
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17/02/2024 5:59 am
- Clean ldle control valve or throttle body and MAF sensor.
- For transmission jerking front position sensor. It can be many reasons why idle rich but I hope this helps
