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What wrong with the engine when the idle go up and down 240sx?
Wiki User
∙ 18y ago
the AIV valve is dirty. This is a very common problem, your best bet is to remove the entire AIV box (located behind the airbox on the drivers side) via the 3 screws holding it in place, then remove and plug the 2 hoses that were leading to it. This is completely safe, and all it is doing is keeping exhaust fumes from entering your intake manifold. If this doesnt work, then try installing a new fuel filter, preferably one for a 1990 300ZX, it is a direct fit and will give you a better throttle response
Wiki User
∙ 18y ago
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How do you slow down idle speed on 89 Chevy scottsdale?
You can't it is not adjustable, It is controlled by the computor. You have something wrong, Vacuum leak, Dirty Idle air control valve You need to scan engine with a engine scanner to see if something is wrong with the emission system. Is the check engine light on ?? SCAN ENGINE. There is a number of things that could make it idle to fast.
For an idle speed motor 92 Expo Mitsubishi?
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There is no idle adjustment. It is controled by the computer. You need to look for a vacuum leak, And may need to clean the idle air controll that screews into the left rear side of the TBI. throttle body. Is the check engine light on ?? If so need to scan engine with a engine scanner to see what is wrong with the eminssion system.
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Your 96 dodge Dakota is not idling when warmed up What is wrong?
my 96 dodge Dakota wont idle when engine is warm and i changed idle air controle valve what else could be wrong
How to idle down 1993 Chevy truck?
That engine is computer controlled therefore the idle was preset / calibrated from the factory and there is NO adjustment. You need to have the engine scaned with an engine scanner to see what is making it Idle to fast. Check for vacuum leaks first.
Once your engine warms up and you come to a full stop it seems to rev up and then bog down and sometimes stalls could a vacuum leak do this?
The idle solonoid is probably hanging. Remove it from the throtle body and clean it. 240SX? remove the AIV box and plug up the hoses
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Look for a vacuum leak at the engine.
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idle speed motor on the throttle body.
Idle rises and drops when warm?
do you have a/c switched on when this is happening a/c makes engine idle up and down as it cycles on and off
