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Old Dec 5, 2006, 11:48 AM
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High Idle?
I have a completely stock 2003 Evo 8. It is idling a little high, about 1250, is that normal? Even after driving it for about 5 mins after its warmed up it will idle high, anyone else experience this on a completely stock car? Thanks!
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Old Dec 5, 2006, 11:51 AM
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do you have your fan on? When I want some heat or a/c and I turn it on, it idles high, its annoying.
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Old Dec 5, 2006, 11:54 AM
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That is not normal...
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Old Dec 5, 2006, 11:56 AM
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nope definately not normal, check for a boost/vaccuum hose that may have come off on your manifold
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Old Dec 5, 2006, 12:07 PM
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well i did have the heat on, but i will check the manifold to be safe, any other suggestions? I'll also check to make sure nothing is holding up th throttle cable. Is our throttle cable adjustable?
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Old Dec 5, 2006, 12:11 PM
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If you have the selector knob set to defrost or partial defrost the ac compressor turns on, which could cause a higher idle, although 1250 is still kind of high. check for manifold leaks
Last edited by clarkkent06; Dec 5, 2006 at 12:29 PM. Reason: spelling
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Old Dec 5, 2006, 12:27 PM
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Originally Posted by clarkkent06
If you have the selector nob set to defrost or partial defrost the ac compressor turns on, which could cause a higher idle, although 1250 is still kind of high. check for manifold leaks
+1....rear window defrost can cause it to idle hight as well.
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Old Dec 5, 2006, 12:30 PM
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Originally Posted by 3volut1on
I have a completely stock 2003 Evo 8. It is idling a little high, about 1250, is that normal? Even after driving it for about 5 mins after its warmed up it will idle high, anyone else experience this on a completely stock car? Thanks!
u must have purchased the evo 8 with the prototype mivec
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Old Dec 5, 2006, 12:32 PM
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Originally Posted by adrenaline1
u must have purchased the evo 8 with the prototype mivec
you're joking right?
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Old Dec 5, 2006, 12:36 PM
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yes
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Old Dec 5, 2006, 12:45 PM
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Well i know its not the defroster, or the A/C, after work i'll check the manifold, anything else possibly, forgot to mention i do have an APEX'i boost gauge.
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Old Dec 5, 2006, 12:50 PM
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Did you car come with a stock boost gauge? make sure all the connections to your apexi boost gauge are tightened down.
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Old Dec 5, 2006, 12:52 PM
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Coolant temperature sensor maybee?

The ECU is setup to idle the car higher until the engine temp hits a certain temp then it lowers down.

Why not just take it to the dealer and let them diagnose it?
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Old Dec 5, 2006, 01:34 PM
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i'd be willing to bet you have a boost/vacuum leak. make a tester to do a leak check.
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Old Dec 5, 2006, 02:18 PM
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The real question is does it ever settle down?
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