Re: [DML] Interesting idling stuff

["Elvis Nocita" <elvisnocita@xxxxxx>]

Is the idle speed motor buzzing ?
Does it move in both directions ?
Do you have a bad connector or wiring harness ?

This would cause the problem you describe. The idle motor can turn 
only in one direction, opens up completely and stays open -> max idle !



> 
> Ok everyone - I have a question.  I have eliminated
> the idle control motor due to my problem I'm going to
> describe here.  With my idle control motor
> disconnected, the car idles at 900 rpm beautifully
> (the ecu is hooked up).  If I hook up the idle control
> motor (keep in mind the ecu has been hooked up the
> whole time), my rpms jump from 900 to almost 2500
> rpms.  I acquired a spare idle control motor and tried
> that one (one off another owner's car that I KNEW
> worked), and my car jumped in rpms again.  So then I
> obtained a spare idle speed ecu that I knew worked -
> hooked it up - my car's idle jumped again.  So I've
> tested both new ecu's and motor's with no success.  We
> have rebuilt the whole engine from the block up, so I
> know all vacuum hoses are intact, all O-rings are new
> and replaced, the intake manifold is on propery.  
...cut...

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