Question about Jeep Grand Cherokee
At first the truck would inadvertidly die< I cleaned batery conections and most grounds ,then when I started the truck it would surge which may be common since the PCM needs to reprogram the TPS and such but now I have error code P0123 and the truck will not shift into OD
IDK if you have more than one problem. Code P0123: throttle position sensor/switch a circuit high input. Plausible causes would include, TPS not mounted correctly, TPS not properly adjusted, Wiring to the TPS is damaged (ground wire touching another wire), or the TPS sensor is defective. Your symptoms could be caused by an electrical or a mechanical failure. First repair this code and see if it fixes your driveability issue. Please write back and let me know how you are making out, good luck.
Posted on Mar 21, 2014
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Posted on Jan 02, 2017
The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. Take care not to burn up the transmission by running it hard while your in the limp mode.
Your going to have to get the truck scanned to clear any codes and why there are DTC codes. Auto Zone scan for free and most auto shops charge $10.00 to $20.00 to scan sine they want the business.
If you want to clear the codes your self you can put the ignition to the run position and pull the ECM (Batt) fuse out for 20 sec and place it back in then start the truck. It may stall but let it, just start it again and this would have cleared all the DTC code history.
The transmission should be running fine unless there is a problem and the service engine light will be on again and you'll be in limp mode still with an updated DTC in the ECM.
Good luck and hope this helps.
Posted on May 26, 2009
Try that, its the latest info...
Posted on Jan 28, 2010
Testimonial: "Awesome information. Exactly what I needed. Thank you."
SOURCE: 1999 lincoln town car no start
yes the teft light will stop the vehicle from running. that is the pats system and can cause all sorts of trouble. if the light flashes fast its not reading the key. no start. if it turns on for two seconds and shuts off the it should start
Posted on Feb 06, 2010
Testimonial: "very good thanks fast reply very helpful"
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