rough start

  1. BusterJeep

    Fuel pressure issue and P0456 - 2004 4.0

    New member, old Jeeper. I have been perusing the threads here and have found bits and pieces of information but nothing seems to really hit on my problem. Any advice would be appreciated. 2004 TJ X w/150k on the clock. Currently on my 4th fuel pump. OE died at 115k. Replaced with DFG1221 @...
    • BusterJeep
    • Thread
    • 67726 69316 bosch dfg1221 fuel pressure fuel pump hard start p0456 regulator rough start
    • Replies: 5
    • Forum: TJ General Discussion
  2. K

    A myriad of problems

    Hey everybody, hope you are all doing well. The TJ overheated for the first time today while on the highway, pulling a couple ATVs, and it was about 110 degrees out. I know a pretty heavy load but it's done it going on 3 years now no problems. So I got the check gauges warning and saw the temp...
  3. EROCK

    Intermittent rough start and P0340 code (2000 TJ 4.0)

    When I first bought the Jeep about every 10 starts or so it would have a hard time starting like half the engine was misfiring. It would sputter and die then it would usually clear up on the next start. Sometimes it would fire the check engine light and sometime it wouldn't. Well this week it...
Top Bottom