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Old August 4th 09, 03:08 PM posted to rec.autos.tech
Steve W.[_6_]
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Default Isuzu Rodeo fast idle

GeeBee wrote:
> We have a 1997 Rodeo with the 4.2L V6. It idles too fast. Things we have
> done include replacing the "idle motor", which is actually a solenoid.
> That only cured it for a short time. I have tried lubricating throttle
> linkage and throttle body, to no avail. Strangely, when the battery was
> disconnected for an unrelated problem, everything was fine for a few
> hundred miles, then the idle speed started to creep up again, to the
> point it idles at about 2200 rpm. This is not a good thing considering
> we take it up mountain roads occasionally. Even changing down a gear,
> the machine wants to run away on long down grades, leading to me having
> to ride the brakes way too much.


Sounds like you have a vacuum leak somewhere. Air AFTER the MAF will
cause a high idle.

--
Steve W.
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