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cars holds high rpm when shiting [Archive] - StangBangerz Forums
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MR.Shibbs
10-22-2009, 01:43 PM
When I push the clutch in my rpms will jump for a few seconds and then settle back down. Does anyone know what is causing that?
RACEME
10-22-2009, 02:34 PM
It could be caused by a couple things. The computers on most mustangs are programed to hold the rpm's somewhat to aid in smooth shifting. I have also seen the Idle air control valve stick and cause this.
Mista Bone
10-22-2009, 06:06 PM
as well as floor mats and sticky throttle bodies.
CNTLOSE
10-22-2009, 07:47 PM
What year is your car?

1986-88 sometimes have a problem with the connections in the salt and pepper connectors on the back of the intake. Pull them apart clean them and lightly sand on them. (Had that problem on an '88 GT and that was the fix.) As mentioned above look at TB. Clean it with some carb cleaner or something similar. Also check the TPS voltage...you will get many "correct" settings told, but make sure it is around .98 or so...a little less a little more is okay. Clean the MAF sensor. Finally reset the idle. Here is the way Ford Racing states to do it. Go to my post #7 and I have the link there.

http://www.stangbangerz.com/forums/showthread.php?t=50727

Again the TPS is always a hot debate...just get it close and you will be fine.
MR.Shibbs
10-23-2009, 02:24 PM
It's a 92 GT. Thanks for the help I will try that this weekend.
CNTLOSE
11-01-2009, 11:23 AM
It's a 92 GT. Thanks for the help I will try that this weekend.

Did you get it figured out?