Jeep Wrangler Forum

Jeep Wrangler Forum (
-   TJ Tech Forum (
-   -   rpms raise when clutch pressed (

Zjones1994 12-05-2012 07:01 PM

rpms raise when clutch pressed
I just changed my thermostat and long story short my jeep was drivin by my dad for about 5 minutes after it overheated. That's not the problem, now everything is worked out, though i need to change the t-stat again :doh:, but now whenever i drive il press the clutch in to shift or come to a stop the rpms go to somewhere around 1500-2000. It only does it after being driven. Idle is at about 750 though it does seem a little rough. Anyone have an idea of whats going on?

Zjones1994 12-05-2012 08:02 PM

I just took it for a drive after checking the throttle body and its clean as can be. Air filter is good. As far as i can tell the throttle cable isnt hanging up. I did notice it only happens when im in neutral, or with clutch engaged, and moving. Once i come to a complete stop they drop back down

Sccafire 12-06-2012 01:50 AM

Check all you vacuum hoses. Make sure they are all hooked up properly and do not have cracks or holes in them.

03Ruth 12-06-2012 01:57 AM

Try this...
Cleaning IAC and Throttle body write up (for dummies) -

gomezaddams 12-06-2012 06:06 AM

I had the same problem in my mustang. After going through everything else replaced the throttle position sensor even though it checked out fine. No problems since. Do clean the iac and mass air flow sensors first though,just to see.

Zjones1994 12-06-2012 08:59 PM

So tonight after cleaning the throttle, iac, and tps i had a code come up after. Took to auto zone and had 3 codes
Iac circuit condition higher/lower than expected.
Engine cold for too long
Throttle positioning sensor.
The iac one is the only one that has multiple things that could cause it. Im assuming replacing the iac but it also says vacuum leak. How do i check that?

All times are GMT -5. The time now is 07:17 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.