Main IndexAuto Repair Home Search Posts SEARCH
POSTS 		Who's Online WHO'S
ONLINE 		Log in LOG
IN




Automotive Repair
Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:   
  Login
  Sign up here!



Latest Forum Post
with_replies.gif image   Lukewarm Heat............
New antifreeze reverse flush heater core...

with_replies.gif image   multiple warning lights
2013 GMC Terrain 130,000 miles 4 cylinde...

with_replies.gif image   2014 Nissan Sentra Shaking
Car recently started shaking when accele...

no_replies.gif image   Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086
N/A

hot_with_replies.gif image   1989 toyota pickup 3.0 crank no start
I have a 1989 toyota pickup 3.0 crank no...

with_replies.gif image   Strut spring orientation and strut mount tension nut
2017 Nissan rogue awd 2.5 L Put in Monro...

with_replies.gif image   Transmission stuck in part, I have tried everything
So I'm working on my elderly fathers 201...

with_replies.gif image   2017 dodge journey LED headlights on/off randomly
Year of vehicle 2017 Make of vehicle dod...

with_replies.gif image   Kia Soul starter replacement issues!
Okay so my car is a 2010 Kia soul 2.0 en...

hot_with_replies.gif image   Please Help - Knock sound & engine fail
Hi all, Hoping to get some insight and ...




Jeep P0123

Search for (search options)
 



mw1871
User

Sep 8, 2009, 1:31 PM

Post #1 of 4 (10459 views)
Jeep P0123 Sign In
I have a 2003 Jeep Grand Cherokee, 4.0 liter, with 100,000 miles. I am getting a P0123 (TPS voltage high) trouble code. When the fault is present the transmission acts goofy, and never has the same symptom twice. Once it felt like it was slipping on takeoff from a stop, would shift to second and feel ok. Another time it felt as the trans would not shift into overdrive. I have been told that the reference voltage from the TPS then goes to the trans controll module. Yesterday the trans was acting up so I stoped to check the fluid level and it was ok. The idle started to fluctuate excessivly and when I got back in the car the ses light was on. Once in a while I feel a miss but when that happens I run some injector cleaner through and it clears up. I dont feel that is related to my current problem. Everything else seems to work fine. I welcome any input and thank you in advance.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 8, 2009, 1:40 PM

Post #2 of 4 (10451 views)
Re: Jeep P0123 Sign In
Have you done anything to test your TPS circuit. The trans takes data from the TPS so you need to resolve that first.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



mw1871
User

Sep 8, 2009, 1:59 PM

Post #3 of 4 (10446 views)
Re: Jeep P0123 Sign In
I have not done any hands on work other than pull the code and read up on it. It is now 1030 pm and likely will not do anything else tonight. I agree fixing the TPS is a first priority, that is why I am not panicking about the trans. My wife is freaking out however.


(This post was edited by mw1871 on Sep 8, 2009, 2:02 PM)


mw1871
User

Sep 10, 2009, 9:37 AM

Post #4 of 4 (10431 views)
Re: Jeep P0123 Sign In
Just an update. Since my orrigional posting, the Jeep has not acted up, so troubleshooting has stopped. Just looking for other peoples experiences with the P0123.





 
 
 






Search for (options) Privacy Sitemap