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Old 10-30-2009, 01:39 PM   #1
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Is this normal?

Is this normal that my car takes a bit to go back down to idle. heres a vid. Do i need a tune the car? It does have some miles on seance Ive had it.
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Old 10-30-2009, 04:09 PM   #2
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Re: Is this normal?

the 3.8l's are known for the idle decay rate to be high. You can alter this in the tune. You can try cleaning your MAF sensor and cleaning/replacing the IAC (idle bypass valve) on the upper intake (round cylinder shaped thing near the throttle body).

My old 01 did it~
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Old 10-30-2009, 04:25 PM   #3
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Re: Is this normal?

mine does it too. its really not a huge worry but I would follow spector's advice for cleaning. i am going to now that I know. Thanks spector.
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Old 11-01-2009, 09:51 AM   #4
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Re: Is this normal?

Mine does the same thing. but I did notice that service engine soon light was on. Think maybe its time to do a tune up.
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Old 11-01-2009, 11:44 AM   #5
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Re: Is this normal?

http://www.moddedmustangs.com/cleaning-your-iac.html
Maybe that will help
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Old 11-01-2009, 11:10 PM   #6
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Re: Is this normal?

oh i know my check engine light is on. it says i have a bad egr valve or something. My last tune up was last month. I don't remember the code. i know its something about the egr system. I whent to the parts store and a new iac is like 80 bucks so i'm just going to clean it and see what happens. thnx guys.
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Old 11-02-2009, 10:10 AM   #7
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Re: Is this normal?

clean it with no residue ON contact electronic parts cleaner (Ive picked some up at radio shack and autozone)
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Old 11-05-2009, 02:35 AM   #8
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Re: Is this normal?

i have some cleaner and i was wondering hows should i clean it? just spray it out?
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