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26-05-2008, 10:29 AM
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#1 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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I am having some trouble with the revs on my car staying high for about 1 second after you remove your foot off the accelerator. I have asked this forum if anybody knows what the problem is but the only replys I got were people experiencing the same problem. So I was having a play over the weekend and decided it was something to do with the IAC valve. Then the thought hit me to ask you guys how it operates and what sensors effect it. For example I know the power sterring sensor causes the IAc to allow more air through when the sterring is moved therefore higher revs. Could somebody in the know tell me what else effects the IAC, how and why ?
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26-05-2008, 10:32 AM
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#2 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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I ask this because I noticed that when my engine is cold the revs are fine and go back to idle as they should. When the engine warms up or has been running far about 5 minutes the revs stay high for that 1 second delay and its driving me crazy. Any ideas would be appreciated
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26-05-2008, 11:23 AM
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#3 | ||
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FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Melbourne
Posts: 2,256
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Manual? I find when this happens with mine, i have to press the clutch pedal all the way in and the revs go back to normal.
Theres a switch that the clutch pedal activates when its pressed/depressed, not sure of what it does ill have to look into it. |
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26-05-2008, 12:06 PM
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#4 | ||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Perhaps give it a clean and see if that improves things any.
GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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26-05-2008, 01:29 PM
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#5 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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It is a manual and I have cleaned the IAC valve with little to no difference. The clutch switch is a new one on me.. Where is it located and why would it control the revs ?
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26-05-2008, 02:08 PM
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#6 | |||
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You can't stop the signal
Join Date: Nov 2005
Location: Behind a computer at work
Posts: 1,624
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Clutch switch should only be there for cruise control.
I'd would say the problem is a gasket somewhere on the intake side. Either IAC, throttle body or intake gasket. If the intake gasket is broken you'd be able to hear it so it say that wouldn't be right. I look at either the IAC or throtle body one, starting with the IAC Cheers
__________________
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26-05-2008, 04:28 PM
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#7 | ||
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Regular Member
Join Date: Oct 2005
Location: Townsville
Posts: 260
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Thanks Superroo, I looked at the IAC gasket when I pulled the IAC off to clean it. I will check the throttle body on the weekend. The reason I was looking at sensors is because its fine when the motors cold but then after about 5 minutes it holds the revs. I would have thought if it were a gasket it would be like that all the time.
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26-05-2008, 04:35 PM
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#8 | ||
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You can't stop the signal
Join Date: Nov 2005
Location: Behind a computer at work
Posts: 1,624
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Have you given the car an ECU reset? That may be all it needs
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IAC and other things
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