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crazy idle...


BronKitis

BronKitis

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88 BII with a 2.9. The idle is very inconsistant ranging from 800-1200 rpm... When I took it for a drive this wknd everytime I'd push the clutch in the idle would skyrocket to 2500 RPM until I stabbed the throttle. It then would go back its "normal" idle.... What is going on???
 


Spitfire1975

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Start by pulling codes. Probably have a vacuum leak or bad sensor. You are going to have to start a process of elimination to find the problem(s).
 
adsm08

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Mine does the same thing, its a sticky IAC.

Shoot some WD-40 in both sides of the IAC and on the end of the throttle cable, should help a little.
 
BronKitis

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What's an IAC?
 
adsm08

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Idle Air Control valve.

Cylinder looking thingy (yes, that's a technical term) bolted to the passenger side of the throttle body.


Yours is gonna look slightly different, but thats about the same basic unit.
 
BronKitis

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Thanks man. Gonna need it to hold a steady idle to pass emmissions. Hope thats all it is!

AJ
 
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