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  1. ZJ Grand Cherokee Forum
    Replaced IAC TPS MAP cleaned throttle body. Rough idle When I unplug the TPS it idles smooth. When i go to plug it in it stalls and fluctuates with misfiring I am stumped. Did a tune up on it recently. Oil change and filter new thermostat. New fan clutch. Fixed 2 vacuum leaks. Properly. I have...
  2. XJ Cherokee Technical Forum
    Having more electrical problems with my son's XJ. He took it to town the other day and it started sputtering, high idle, airbag light would come on intermittently and his horn doesn't work. Codes thrown are: P0123- Throttle Position Sensor/Accelerator Position Pedal Circuit High Input P0113 -...
  3. WK Grand Cherokee & XK Commander Forum
    I had an misfiring issue with the new to me 2006 WK and from the OBD readings, got what I thought were the necessary parts to correct the issue. Parts that have been thrown at the WK are (in the order thrown: spark plugs (NGK and then Denso), coil packs, crankshaft sensor, camshoft sensor...
  4. TJ Wrangler Technical Forum
    So I just purchased my 99 TJ back in July. When purchased the previous owner said "sometimes the jeep hesitates when taking off" then proceeded to tell me he had the wires and plugs replaced to no avail. I had a similar problem with a 98 TJ i owned in the past and I traced it back to the fuel...
  5. ZJ Grand Cherokee Forum
    how can i test map sensor,TPS,CPS,ACTP Which causes excessive fuel consumption?
  6. XJ Cherokee Technical Forum
    Hi all, I have a 1999 Jeep Cherokee Classic 4.0 engine. The Jeep was stalling out randomly and eventually stopped running at all. When you turn the key it starts and runs for a few seconds then stalls out. I've had 3 mechanics look at it, and had the repairs done each time they diagnosed the...
  7. Engines & Drivetrain
    Hello all, I recently changed some gaskets and when I put everything back together the engine had a rough idle and when in drive it wouldn't accelerate. I had 3 different error codes. P0123 P02111 (forgot the last). The issue was the TPS (throttle position sensor) was slightly unplugged. A...
  8. ZJ Grand Cherokee Forum
    ***HUGE UPDATE*** It started today and STAYED running! I am posting an update reply explaining the details. Let me start off by saying, any help will be appreciated... Okay...a few weeks ago my 1998 Laredo Special - 4.0 Straight 6 started to drive pretty rough. From a stop I would have to put...
  9. Audio, CB & Ham Radios, GPS, & Electrical
    Some info... My jeep has some strange things with the electronics. When I turn on the windshield wipers the wiper speed only works when the headlights are off. When I turn off the headlights the wiper arms will wipe once occasionally (despite that wipers are off). All lights(from headlights to...
  10. TJ Wrangler Technical Forum
    Hey everyone, New to fixing my own jeeps, and looking for some advice. I have an 02 2.5L Wrangler. I've been having a problem with it idling high. At stop lights after it warms up, it kind of revs itself up to 2000 and goes back to 1500 at a constant up and down. Today I had to drive longer...
  11. Engines & Drivetrain
    Hi everyone, I have just bought a 2000 TJ 4.0L Sahara and on the drive home the check engine light came on. It was fine on the test drive and has since cleared. I plugged in a scan tool and it gave the P0123 code TPS circuit high voltage. I would be really grateful for any tips about the best...
  12. Engines & Drivetrain
    Hey guys. I have a 94 grand Cherokee 4x4 going on its 3rd 42re? I bought it used and the first time it went out it dropped out of OD and began its limp mode journey. I could get it to change into all gears accelerating heavily but, as soon as I let off it would drop back into LM. I replaced that...
  13. Engines & Drivetrain
    Hello, I'm new to forums, so here I go. I bought a 2002 WJ a few months back, it will accelerate to 60 with no problems if I floor it. The problem is if I take off normal, it seems to shift early into higher gears, leaving it no power and I can floor it and the rpms will stay the same or even...
  14. ZJ Grand Cherokee Forum
    42RE TCC jerk - SOLVED! It was about 3 years ago I think I posted this http://www.jeepforum.com/forum/f13/transmission-leak-just-got-worse-1536878/ about leaking fluid. The leak has not been too bad.. I've just been adding fluid on occasion... sometimes getting too much in and having more come...
  15. XJ Cherokee Technical Forum
    So I have searched the internet until my eyes started bleeding over this: How does one test - and I mean definitively test - an IAC and a TPS on a 1999 (late model) 4.0L - those threads on renix 4.0L's are all wrong for me - not the right wire count, different sensors, etc. I don't want to...
  16. XJ Cherokee Technical Forum
    I had some issues with an intake gasket not sealing. All of those issues have been resolved. However in my haste to test things after reassembly I cranked it over with the CPS unplugged and it messed up my timing. The distributor has been undisturbed and the timing chain has also been...
  17. YJ Wrangler Technical Forum
    Hello all, I recently got my first Jeep about 3 weeks ago. I traded my motorcycle for it knowing that it would probably need some bit of TLC. It runs perfect except every now and then when I'm making a turn or braking it will die; it doesn't have a slow decline in RPM's, it just dies. The...
  18. XJ Cherokee Technical Forum
    ok guys, this is my first post so go easy on me. lol ive got a 2001 xj 4.0 and i failed emissions with codes p0122 and p0123 (the low input and high input codes) the engine would idle fine then all of the sudden it would bog way down and run like crap. then when i would drive it it would cut...
  19. ZJ Grand Cherokee Forum
    Hello, brand new the the forum and somewhat new to working with jeeps. My automatic jeep started to act funny with its shifting. After awhile of bad-terrible shifting I noticed that when I would put it into Reverse or Drive the idle would take a dive and almost kill it, but would recover just...
  20. ZJ Grand Cherokee Forum
    Hi all! Does anyone out there know how to replace/rewire the tps and/or iac wiring? Are there any wiring kits anyone knows about? I have a 1998 ZJ 4.0L. Any help will be appreciated:)
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