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My idle is too low when engine is warm.how to adjust

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The idle is not adjustable, it is controlled by the on-board computer system, by a idle control motor or valve whichever you want to call it. suspect that the idle control unit is bad or the throttle body has allot of carbon build up that is not allowing the unit to work properly.

Posted on Mar 12, 2011

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How do you adjust high and low on carburettor


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How to adjust idle?


hot engine ?, cold or both,, EFI runs in 3 modes, cold ,warm and hot.

name it.

which engine option (displacement)??????



there is no idle adjust, that is the PCMs, job 100%, all the time.

Carbs are gone.

here is rule one for all EFI.

idle is the last thing to work correctly.

anything the causes a gross imbalance of engine power to engine load, under idle will cause , idle controls to fail.



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6: CEL glowing running? can be in limphome, limp cancels Idle controls (in may cases) RTM read the FSM on DTCs.



if fails hot?, is hot = 180F temp or more? "thermometer time"

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Low idle when engine is warm


Idle is normally set a bit higher anyway for a cold engine. If the warm idle is OK when the clutch is not engaged and gearbox in neutral, then it points to some kind of severe friction in the area of the clutch throw-out bearing, which may be seizing up, or the clutch pressure plate fingers, one of which may be broken off. If the idle is the same, then that simply needs adjusting.


Is there any odd noise when the clutch is depressed, like a low growl? That will be the bearing. You could have someone listen next to the clutch bell housing while you work the clutch pedal, to try to localise it.

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Engine stalls when making full stop when AC is on, but when I cut it off it's just fine.


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it seems that the auto choke setting is maybe wrong or there is a problem with engine management, or a worn part which is sticking.

when cold, the engine should be higher as the choke will be on but a warm up idle of 1200 seem a bit high i would expect around 800 and then on restart if the engine is warm then the choke should be off but the idle being too low indicates one of the above.

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1 Answer

96 tahoe won't start when cold unless you spray engine start into the throttle body intake. Once started it runs great and will restart as long as it is warm?


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Subaru impreza uk model wrx stalls and low idle, hesition


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Jayce

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