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My 94 mitsubitshi has idle trouble, i go 2 the car and start it and its low.?
If i adjust the throttle sensor to make it the right idle of 950 rpm, later the car will kinda warm up or something and while i drive it i put it in neutral and the idle is almost 1900 rpm and then i adjust it again. if i first start it in the middle of the day and its hot i turn on the a/c and it will actually die due to lack of power/throttle. im thinking something hardens every night and softens up after i run it a while.
2 Answers
- 10 years agoFavorite Answer
Check your idle air control valve.
It controls your idle speed by letting the right amount of air into the engine when your foot is not on the gas pedal.
It should be mounted on the throttle body.
If its bad our sticking closed, then it may not open enough to let the right amount of air in to keep the idle up.
Try cleaning & lubricating it first.
Source(s): Many years in the automotive industry - ?Lv 710 years ago
First is check engine light on if yes you need to get OBD check. If not check for any slits in intake plenum hose. Also is engine running at normal temp? if low thermostat could be bad and throwing coolant sensor off. If all that's OK buy some intake cleaner and clean intake plenum and throttle plate and MAF sensor. If none of those fix you're going to have to replace TPS.
Source(s): ASE master auto tech ret.
