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1-14 of 14 Results
  1. ZJ Grand Cherokee Forum
    I hit a lot of rough terrain in Saguaro National Park and since then the Jeep has had a loss of RPM and the RPM jump and my transmission surges when I hit bumps in the road. I've checked the grounds and just installed a crank shaft position sensor. I'm at a loss as to what to do next on it. Any...
  2. Engines & Drivetrain
    Ok so i have a 98 xj and i recently rebuilt the engine. DNJ full rebuild kit, header, high flow cat, and flowmaster 40. Now that the engine is back in it runs horrible, when i start it it feels like it has a race cam in it and runs extremely rich. the tach bounces around and if i try to rev it...
  3. ZJ Grand Cherokee Forum
    Haven't posted on here in a loooonng time, but hopefully you guys can help me out. I've had some troubles with my jeep, so i'll start from the beginning. I couldn't get it to pass emissions this year, it was its first time ever failing. I had some exhaust leaks I got all welded up, ran a BG...
  4. XJ Cherokee Technical Forum
    Ok, I'm not trying to break any rules here but this is posted in the MJ section and not getting any hits so I'd like to put it here with the XJs where there's a little more traffic. Jeep surges and misfires, 4.0L, 5-spd manual...it's all in my profile. Here's the whole story, if you can keep...
  5. XJ Cherokee Technical Forum
    2000 Cherokee Classic 4.0. 20,000 on the rebuild. Been chasing a problem for some time now. Cam and Crank sensor codes, intermittent miss fire codes, rear O2 sensor code. Fuel pressure is 45psi. Intermittent power loss when driving, at time it losses all power. I dump into Neutrals, turn...
  6. ZJ Grand Cherokee Forum
    1995 jeep grand cherokee 5.2 new battery, fresh check on elc connections, stuttering on acceleration; same symptoms as a vacuum leak; runs at 'easy on the accelerator,' and bogs/surges on heavy pedal. Last time this was corrected by replacing a cracked vacuum line. this time I have replaced...
  7. KJ Liberty Forum
    Going on two months ago I had changed out my plugs and had noticed that the engine surges when going at a slow speed/rpm (for example at 25, 30, or 35 mph). I have ignored it since I am not getting any CEL codes, but this morning it has become more predominant. All of my searches have come up...
  8. XJ Cherokee Technical Forum
    98" XJ, Surges under load, fine when floored, rpms flutter, "farts", oil pres. drops I recently traded my truck for this Cherokee. Looked great, fired up great no problem. Got it from a mechanic that did the work on it himself. It's a 98' sport 4x4 4.0L automatic. It has front and rear lockers...
  9. YJ Wrangler Technical Forum
    Hey so I started a thread about this last week but I figured I should start over with all of the details because I am still stuck. Any help you could give would be much appreciated. 94 Wrangler YJ 6 cylinder...~165k miles. This problem started a week ago. I'll be cruising down the highway in...
  10. XJ Cherokee Technical Forum
    I desperately need everyone's help on this issue. I have a 99 XJ with 199k (4.0L I6) that I purchased two weeks ago. I am trying to make it my daily driver. When I test drove it there seemed to be nothing wrong with it. After getting it home and driving it the next day I started experiencing...
  11. XJ Cherokee Technical Forum
    Hi everybody, I will jump right into it. I got code P0121, P0123, and another relating to the torque converter and some surging while driving to go with it. I replaced the tps and it didn't correct the problem. I adjusted the install of the tps and I still get 121 but 123 has gone away. After...
  12. ZJ Grand Cherokee Forum
    So my jeep has been bucking for a couple months now. I figure its about time to track down the problem. I was thinking that it could be the fuel pump considering its an Airtex. Ive had nothing but problems with this brand. I hooked up a pressure gauge to the rail and ran it, everything seems to...
  13. XJ Cherokee Technical Forum
    Hello, I need some advice with a mysterious rough idle / low power condition on a '00 Cherokee 4.0L, 140K. It is bad enough that if I am idling with my foot on the brake, I can feel the engine power surging. I have also noticed on a couple occasions (warm day, AC on, stopping at a stop light)...
  14. TJ Wrangler Technical Forum
    Hey guys I have a 98 Tj 4.0 with an automatic transmission. About a month ago it starting surging while I drive when the vehicle is cold. I will have the pedal pressed and rpm's at about 3000 and it will suddenly drop to 1000 then pick back up and drop again. It does this for about 15-20 seconds...
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