rough idle

  1. B

    1999 TJ 2.5 5-speed sputters, idles rough, and cuts off

    Lengthy but wanted to be detailed I have 1999 2.5 Tj 5 speed.. it’s been giving me issues lately such as Sputter when accelerating rough idle Randomly cuts off (that just started) My bf and I originally thought the fuel pump was going bad since its more than likely had the original fuel...
  2. Zach O'Neill

    Stalling when at running temp

    Hi all, firstly apologies as I've posted about this issue a couple times and in different places but im still having issues and in need of some advice, and am hoping that by posting again it might gain a few new eyes and some new interest. I recently picked up an 04 TJ 4L with the 42rle auto...
  3. SamBone02X

    Extreme Rough Idle/ VIbrating, IAC bad?

    My 02 TJ has been idling very poorly recently, I have a new throttle body (different thing), new TPS, and just recently cleaned my IAC with throttle cleaner and it did not help. My spark plugs all look fine and the jeep runs fantastic when it's driving and when it's up to speed it just idles...
  4. Justanotherjeepguy

    Need help with rough idle (and a question about CPS)

    Thanks for taking the time to read my post. I tried to cover everything—but let me know if I missed something important. I have a 2006 Rubicon TJ 4.0 i6 w/automatic transmission (120k-ish miles) with a rough idle. More info: • I believe it only happens when it's up to normal running temp...
  5. AnakinMc

    P0300 code and rough idle on 2005 2.4 4-cylinder

    Howdy been diving through the forum and was looking for some advice. Just bought a TJ In a great shape it spent its whole 115,000 mile life in a Arizona Garage and is in amazing shape. Cars been well maintained mechanically and I have every service record for it. I drove the car back to Colorado...
  6. T

    My 2006 Jeep is having problems in idle after warming up

    So its happened a few times and it always happens when i have to turn the Jeep on and off several times like running errands or something like that where I'm starting it up more then a couple of times. So the 4th or 5th time I start it up the engine starts to sputter and run really rough for a...
  7. mgroeger

    Rough idle after short shuts downs

    This just started happening a few days ago. The Jeep is running great, idles smooth, no problems. I shut it off, go run in a store, come out around 5 or 10 mins later, fire it up and it idles like crap. I goose it a little and it sounds like crap, almost like it's running on five cylinders. Then...
  8. Heath A McDonald

    Another rough running TJ

    My first TJ is breaking me in, nicely. It's hard to start, pretty sure that is the fuel pump (Check valve). What is stumping me: When it does start, from cold. It sounds like it's running on 4 cylinders (Its a 4.0) Pop the throttle and idle it up and it smooths right out. In...