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RPM's going up and down at idle


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#1 drawk04

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Posted 12 February 2012 - 06:33 PM

Recently, my car has started acting a bit strange. The RPM's go up and down at idle, but everything else seems alright. I took off the idle controller, cleaned it out, reinstalled it, and nothing changed. Perhaps its bad ? I've heard this is a problem on honda's, my toyota I had awhile back did the same thing, but eventually stopped.

#2 drawk04

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Posted 13 February 2012 - 12:01 AM

Also just cleaned out and adjusted the FITV.....problem is still there.

#3 Raley

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Posted 13 February 2012 - 04:28 PM

what about the iacv?

#4 drawk04

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Posted 13 February 2012 - 05:52 PM

replaced both now....and the coolant temperature sensor....still there:(

#5 Raley

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Posted 13 February 2012 - 07:02 PM

its probably a broken vacuum hose.

#6 Kromestar_Vtec

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Posted 14 February 2012 - 12:52 PM

Try cleaning the throttle body with carburetor cleaner?

#7 ahorner

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Posted 08 March 2012 - 10:22 AM

My 96 did this, IACV and FITV are the usual culprits. In my case, the FITV.




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