Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Troubleshooting/Problems Discussion (http://www.jeepgarage.org/f77/)
-   -   rpm surges (http://www.jeepgarage.org/f77/rpm-surges-67040.html)

gcrew7 10-23-2013 02:22 PM

rpm surges
 
What could cause rpms to fluctuate when stopped? Also my 05 JGC 4.7 TRANNY THUMPS when coming to a stop (:((

lstowell 10-23-2013 02:45 PM

Re: rpm surges
 
Quote:

Originally Posted by gcrew7 (Post 915880)
What could cause rpms to fluctuate when stopped? Also my 05 JGC 4.7 TRANNY THUMPS when coming to a stop (:((

Any number of items, but if you've got a flaking out torque convertor on the transmission, that might be a place to start looking. e.g. if the thump is the torque convertor not idling properly.

Frango100 10-23-2013 08:26 PM

Re: rpm surges
 
This sounds as a problem with the TPS. A failing TPS causes rpm surges and the TPS output is used for the transmission shifting. If you have a scanner which shows live data, you could see the TPS % and see if its jumping up and down a bit.

gcrew7 10-23-2013 09:17 PM

THANK YOU SOO MUCH FRANGO 100. You have be a great source of info. I will try installing the tps. I just hope that it is not the TCC OR PCM.


All times are GMT -5. The time now is 10:12 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community