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rpm slow to return to idle

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Old 09-10-2017, 04:31 PM
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Default rpm slow to return to idle

hi
i have. a issue
my issue is when im reving,the car is slow to return down to idle. i put penetrant for the tb mechanism,the cruise control wire is relocated into the fender,what can cause me car to return the idle down slowly?
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Old 09-10-2017, 06:21 PM
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Does it almost feel like it's going to stall out?
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Old 09-10-2017, 08:19 PM
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i means,when the rpm
goes down from exemple 3500 rpm to 1000,it take time because the drop slow(sticking like)
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Old 09-10-2017, 10:32 PM
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Old 09-11-2017, 03:01 AM
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Sure your "cruise control wire is relocated into the fender" isn't causing the problem. Not sure why anyone would do this.

If not set the parking brake, start the engine, and open the hood. Have someone sit in the drivers seat and hold the throttle at (say) 3500 rpm and release as you watch. Throttle valve on the intake should close. If it moves in slow motion the problem is likely in the cable between there and the pedal.

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Old 09-11-2017, 06:44 AM
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first of all thank you for taking the time to reply and help me
i already cleaned the iacv,but when i reinstalled it,i didnt put in the closed position,could it be the issue?

also for the wire,the cable look to work correctly chuck
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Old 09-11-2017, 08:10 AM
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What year is it that we're dealing with?
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Old 09-11-2017, 09:59 AM
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eight its a ap2 2004
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Old 09-11-2017, 11:50 AM
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When you say that you put penetrate for the throttle body mechanism, do you mean you cleaned the throttle body plate itself or the cable on the outside? What did you use? Did you do this as a preventative maintenance or was this done after you had the RPM issue?

Also what was used for the IACV cleaning? And same question for this, did the RPM issue happen before or after the cleaning?

Did you change or was there any other mods that you did prior to this RPM issue occurring or did it just start doing this out of nowhere?

Some other quick questions, does this RPM behavior change with A/C on or off? Does it matter if you're in gear or just revving with the car in neutral? And this one's more of an important one, when returning back to idle does the engine bog or stumble?

Last edited by eight; 09-11-2017 at 11:54 AM.
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Old 09-11-2017, 01:02 PM
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i used carb cleaner...the iacv was working like new after i cleaned but it has been done last year,im gonna take a look at the iacv tonight,put some wd40 maybe ?my car doesnt have bog when reving down.
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