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Old 01-06-2006, 09:04 PM   #1 (permalink)
 
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Exclamation ??crazy idle??

I got me an 89 CRX SI /w a DOHC ZC motor in it... -bought it like that...--
got aem cam gears... 1 is at 0degrees..and 1 is at -2degrees....im confused??.....and my idle is weird...goes from 1500 to 500...to 1500...to 500......
someone fill me in on whats up???
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Old 01-07-2006, 05:21 AM   #2 (permalink)
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Check to make sure the radiator is full, low coolant will cause an idle like that. Also check for any vacuum leaks.
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Old 01-07-2006, 09:07 AM   #3 (permalink)
 
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alright...ill take a peak..thx for the reply ^_-
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Old 01-07-2006, 03:05 PM   #4 (permalink)
 
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its most likelly excessive air going into the intake manifold without the tps registering that you are manually opening your throttlebody to let more air in (rev the engine) its basically the ecu is correcting the by dropping the motor down so your car doesn't continue to increase rpm...

immagine it lik if you were to remove your throttlebody AND START YOUR CAR..

but in a much more minor way

ic probally is a result of...


vacume leak.
throttlebody gasket leak.
Intake manifold gasket leak
idle controll screw to loose or not even there
throttle plate not adjusted correctlly.

low coolant or a headgasket leak can also cause this but its is generally more irratic and will change depending on how the ecu is feeling...


are you "oh shit" light on?

Last edited by Black Mountain; 01-07-2006 at 03:09 PM.
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Old 01-07-2006, 07:21 PM   #5 (permalink)
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its either. ur idle screw...timing or vaccum...also what iacv are u running?
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Old 01-08-2006, 07:07 AM   #6 (permalink)
 
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bout to check all of those today...had a very busy week...and well..im pissed too....
someone just egged my car!!!! >_< (lmao!)......them dang kidz....gonna beat em in da head wit a base ball bat! bleh... i just washed it too....
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