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Erratic Idle Zetec 1.8


Guest Rojar
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My 97 Mk6 1.8 ghia has a strange idle problem.

 

Starts and runs fine with no problems, pullslike a train etc etc.

 

The problem is sometimes idles at around 1500 revs. A qucik flick of the throttle doesn't settle it down.

 

I have found easing the clutch with the brakes on to drop the revs cures the prblem once the revs drop to nromal idle speed the engine will then idle nromally once the clutch has been dipped.

 

Any ideas? My first thoughts maybe the throttle position sensor is sticking a little.

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Guest markeyboy

as said by charlzy the idle control valve is usuallly the first point to start at, but there are so many things that cause the zetec engine to run bad,

 

have a look on this click, may help diagnose yourr problem

bad idle guide

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Guest Dazzaas

had that problem with mine and found a bottle of stp injector cleaner did the trick for about 6 months

but dont follow instructions dont add to full tank just add to under 1/4 tank

worked on mine

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