Questions & Answers for: Chevrolet Silverado 2500 high idle

...MAS. It is located between the air filter housing and the throttle body. Hope this helps, rate me highly. Thanks; Rich RPM ...

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Question about 1999 Silverado 2500

2 Answers

grey smoke high oil usage after truck idling thick grey smoke comming from exhuast high oil usage It sound like you have a set of worn intake valve guides and seals. When your engine is idling , the ...

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Question about 1991 Silverado 2500

1 Answer

high idle speed my 454 ci has ele ignition and has a high idle. Is it adjustable? how do i fix it? replace idel possition sensor

Question about 1994 Silverado 2500

1 Answer

...high, med, low, is working fine. I think that one still uses cables to control the blend doors and vent doors. Are you sure those are working and/or connected. Also when you replaced the thermostat ...

Question about 1991 Silverado 2500

1 Answer

high idle prob fixxed on my 91 gmc sierra k2500 454? i dont need need the high idle at all Typically high idle occurs when vehicle is started when cold. The idle will go down when the vehicle warms up

...to idle until highway speeds are reached again. May be a cooling sensor issue . If you can hook a scan tool to it and watch the coolant temp pid while idling high it may show a fluctuating reading

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