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A vaccum Leak
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∙ 14y ago
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What causes a 1994 Astro to stall on low revs and on idle speed when it runs fine on freeways and higher revs?
Possibly a stuck or sticking EGR valve.
What is the cause for your 97 Checy Tahoe LT oil pressure gauge fluctuating constantly and idle is not staying constant Idle revs when in Neutral?
probably a leak in the intake would cause the rev in neutral and as for the oil pressure gauge i still haven't got that figured out but its not just a problem on tahoes i have a 2500 pickup which also does that ANSWER When was the last time you changed the oil engine?. Replace and check.
Your eagle talon revs up from idle to 3000rpms?
You need to turn off the Overdrive switch.
1998 civic ex has been sitting for a couple months and now the engine is acting weird It revs up and down from 1 to 2 repeatly and never settles down?
Youre Idle Air Control Valve went bad.
What cause your riding mower to idle up and down when am mowering?
When mowing it will idle up and down because of the amount and thickness of grass you are cutting. This is because the blades will struggle cutting thick grass so the engine needs more revs to keep the blades running at a constant speed and that is also why your mower may slow down because it has used the majority of revs to cut the grass and their are not many revs left to keep the wheels spinning The up and down revving could also be caused by a dirty/clogged air filter.
1989 Ford V8E150 When cold the motor will start straight away but then dies unless revs are kept up After about 30 seconds of keeping the revs up its OK what would cause this?
the most likely cause would be the lack of fuel getting to the engine but then again im 11
Frontera idle heats up rough idle power ok though kicks backat 2500 revs if forced up to 3500 revs 4 th gear takes off like rocket no fault perfect?
You might have a dead cylinder or a misfire in one of your cylinders.
Diesel engine shakes and shudders in idle?
If it is running fine at high revs the most likely problem is an injector
My 93 Honda Accord will not idle it revs up and down on its own could it be the tps?
Check your radiator is full
What would cause 1994 ford telstar to miss spark at low revs?
Vacuum leak or blown intake gasket.
What causes a 1981 Chevy 305 to idle very fast and actually push the brakes when you stop?
Check the Idle Air control valve. This lets air bypass the throttle body plate when the car is at idle or low revs.
Alpha romeo 156 t-spark has problem at idle engine revs up and down?
Yes it does, mine has exactly the same problem, can be the MAF sensor, fuel pump problems or the idle sensor. just changed the MAF on mine saw some improvements but still revs up and down occasionaly
