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  1. Jeep Grand Cherokee & Commander Forums
    Has anyone had this happen or know what it could be? 97 jeep grand cherokee 4.0 sometimes drives perfectly fine then others it sputters while driving, rpms bounce, engine backfires, idles super rough and stalls at idle/low speeds, then will randomly go back and fourth to doing that and again...
  2. YJ Wrangler Technical Forum
    My dad, my brother, and I have been restoring our 1991 2.5L 4 cyl YJ as a family project. We've spent the past few months troubleshooting a rough running engine with sputtering and power loss and we could use some help. We tried to fix it by replacing parts and installing new sensors. Now the...
  3. Engines & Drivetrain
    I have a 1996 Jeep Cherokee Country 4WD 4.0 and have been having this issue for about a week now. When I give it some gas, it sputters like it isn't getting the fuel. This seems to happen in both lower and higher gears. I went to Autozone, and they got no codes when checking the engine. The...
  4. YJ Wrangler Technical Forum
    Okay...I am an avid reader of this forum and get most if not all of my Jeep info here. I don't post much but I need help. I have an 87 YJ 4.2 with a Weber 32/36 with 250K miles that is sputtering and loses power when accelerating or going up hills. I have change out the following parts: 1...
  5. Engines & Drivetrain
    :crying2: My 1996 Jeep Country started to sputter a few days ago so I called my mechanic. When he took a look, and did a pressure test, he said three misfires happened and two of them are running at about 70-90 psi. I scheduled for him to do a tune-up (plugs, wires, distributor, rotor) to at...
  6. ZJ Grand Cherokee Forum
    1998 GC Laredo 4.0 - *FIXED* voltage drop and engine sputters At times while idling my voltage will drop below 14v. I'm guessing this has to do with too low of an idle causing the alternator to not run? Second and more pressing question - Randomly my engine sputters. No codes have been thrown...
  7. TJ Wrangler Technical Forum
    Yess, i've searched a lot and tps (replaced) was closest to alll my symptoms Ok, so here's the deal... I have a 97' TJ 4.0L 5sp trans. Re manufactured engine (473 miles on it) Initially had a re manufactured head on it that was defective causing similar issues along with overheating (typical...
  8. Engines & Drivetrain
    My dad and I recently fixed a 1990 yj from not running to drivable (basically my first car) It's been running well for about a month and a half and out of the blue a day or two ago (we just installed a new radio but I don't see any correlation) I was driving and it stuttered and wouldn't get...
  9. XJ Cherokee Technical Forum
    Basicly it miss fires sometimes, it sputters when im driving at a constant speed. It doesnt sputter when im accelerating. it will stall sometimes when in gear when brakes are applied but idles wonderful in N or park. ive seen many posts already and I had this issue once before but replacing my...
  10. YJ Wrangler Technical Forum
    My YJ has been hiccuping recently. It only hiccups when I'm in 5th gear on the interstate. Anytime I run about 2,000 RPM+ can be sure to expect a few hiccups along the way. When it jolts my shift light comes on and I lose about 100-250 RPM on the tach and then it returns to normal until the next...
  11. YJ Wrangler Technical Forum
    Ok so this is a long story and I'll try and keep it to the point Got the jeep a year ago for cheap was a mess ..... Now that I have it Running one last thing is wrong ... It stutters on the freeway and a little bit When I shift from 2 to 3 when I'm gunning it.. 93 jeep yj 2.5 Parts I have...
  12. XJ Cherokee Technical Forum
    Hi, My name is Jessica. I just got a 2001 Cherokee Sport. Before that i had a 1990 Cherokee Laredo that I worked a bunch on and then someone hit me and totaled it. I was able to buy this 2001 Sport but I cant seem to figure out what is wrong with it. So far it had trouble starting up and...
  13. YJ Wrangler Technical Forum
    Have a 4.2L in my 89 YJ. When i bought it it ran fine. After about a week i replaced the valve cover gasket and did a engine degrease. It was then i noticed some rough idiling. I replaced the spark plugs with some AC Delco plugs that were pre-gapped to specifications. Now it's idiling rough and...
  14. TJ Wrangler Technical Forum
    2.5 liter 1997 Jeep Wrangler So iv searched the web for sometime on this problem. First, it starts and idles fine every time. Engine can either be cold or hot. Happens in first gear at initial take off, or even at the point when the clutch is fully release and load is beginning to occur on the...
  15. TJ Wrangler Technical Forum
    lright heres the story...2006 2.4L started running stupid (sputtering, gargling, backfiring, especially in low RPM ranges), check engine light came on, cylinder misfire. similar thing happened about 5 years ago that was solved by new plug wires. thought maybe they somehow went bad after 60k...
  16. Jeep CJ Forum
    A productive Sunday and Monday: Upgraded valve cover to an Omix aluminum one, new gasket (Felpro Black), upgraded Ford distributor cap and rotor (Team Rush), new plugs, new wires, new thermostat and gasket, new oil & filter, cleaned and painted air cleaner, and topped off tranny fluid. Cranked...
  17. TJ Wrangler Technical Forum
    OK, to start off I guess I'll give you a list of everything that has been done to my jeep here recently and the aftermath. Vacuum leak patch - shop done Throttle body leak patch - shop done map sensor - shop done spark plugs changed - shop done ------- Still had a clear misfire at idle----- tps...
  18. YJ Wrangler Technical Forum
    Hey y'all it's been pretty cold here in Florida ( tell im a Floridian) it hit like 40 last night. AD when I got in my 92 Jeep Wrangler 2.5 this morning states up like normal. But when I got about 100ft down the road in second gear I noticed it was running like ****. It would sputter at 1200 1300...
  19. YJ Wrangler Technical Forum
    I have a 95 Jeep Wrangler, 4-cylinder SE. I've had water leakage for over a year now, and just recently changed the head gasket for a second time. Water leaks from below the exhaust/intake manifold. I can't get a clear view of the exact spot it comes from, but when I give it some gas while...
  20. WJ Grand Cherokee Forum
    Jeep started shaking intermittently, start up, stop lights, etc. Progressed to would not turn over 1st try , 2nd turn of key no problem. progressed to shaking, when gas depressed no power, very rough idle, sputtering etc. let it go in just idle for a few min and it would seem to catch and drive...
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