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Fiesta-Si.com • View topic - idling issues
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Elward
 Post subject: idling issues
PostPosted: Mon Feb 22, 2010 4:42 pm 
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today my car has started to throw a wobbly and idle funny first it seemed like it was sticking and now when it idles it just revs its tits off!

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Elward
 Post subject: Re: idling issues
PostPosted: Mon Feb 22, 2010 8:19 pm 
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right i just had another look and its injecting wayy to much fuel than it should be on idle therefore idling high, what actually on the unit dertermines how much fuel is injected?

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will121
 Post subject: Re: idling issues
PostPosted: Mon Feb 22, 2010 8:32 pm 
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fuel injector duration generally mixture between MAF, throttle position, coolant tempeature and Lambda, but idle engine speed is controled by the idle control valve, excess fuel alone wouldnt generally make it tick over high as there wouldnt be enough air, would just run rich or stall, if idling high look at idle control valve first

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Elward
 Post subject: Re: idling issues
PostPosted: Mon Feb 22, 2010 8:35 pm 
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its a mk3 1.1 so no maf, is the icv the cylinder shape thing next to the injection unit?

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Elward
 Post subject: Re: idling issues
PostPosted: Mon Feb 22, 2010 11:09 pm 
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all fixed, cleaned the tps out and refitted it also the cylinder thing next to the injection unit i replaced with one i had hanging around and it fitted on better so its all sorted now woop woop!

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