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  1. XJ Cherokee Technical Forum
    It's been slow but I finally have my 1990 Cherokee Laredo going fairly well. The main problem is that the instrument cluster is totally dead. The speedometer works fine and I have dash lights but none of the other dials work. I took it out of the dash, cleaned the contact surfaces, and applied a...
  2. YJ Wrangler Technical Forum
    I started this project about 2 years ago after seeing a post on tractorenvy.com about a guy building a circuit to read data from a Renix jeep. He was smart enough to figure out the crazy circuit required to get data from Renix jeeps with manual transmission. I had tried before with a simpler...
  3. XJ Cherokee Technical Forum
    The Problem: So I have been experiencing some weird issues lately with my renix 87 XJ (BA10/5). On Monday it was dead and wouldn't start, I hooked it up on the charger and left it for 8 hours. Battery ended up being fine but replaced it anyways because it was from 2015 and had been drained...
  4. XJ Cherokee Technical Forum
    How's it going y'all! I've been capitalizing on this pandemic time to rebuild my Renix 4.0. Unfortunately, while pulling out the engine, I broke a sensor on the side of the block. I've been struggling to identify what it is. Seems like all of my Renix literature shows a sensor in this location...
  5. MJ Comanche Technical Forum
    I run a 1986 Jeep Comanche 2.5l and my fuel delivery is messed up it seems. I have bench tested the pump, which starts up immediately, checked the filter to make sure it wasn't clogged, and the only thing I seem to have an issue with is the relay itself. Here's the issue: I have to use a...
  6. YJ Wrangler Technical Forum
    hi, i have been having trouble with my coil not getting power. sometimes its a no start thing but mostly its a driving down the road then i get no spark till i get out and wiggle some wires on my icm. i would like to change it out with a msd coil and would like to delete the icm all together to...
  7. XJ Cherokee Technical Forum
    There's a guy near here selling a 1989 Cherokee with the 4.0 for $1000. It's got 171k on the odonomter and it looks like it's in decent shape from the pics. Looks like a decent 20 foot paint job on it, but doesn't look like a total rust bucket. Is there anything I need to look out for with...
  8. XJ Cherokee Technical Forum
    So the high pressure hose on my power steering sprung a leak, any tips/ write ups for replacement - it looks tight down there and what fluid is recommended. Thanks for any info.
  9. XJ Cherokee Technical Forum
    I know one of you can confirm this from top of head so asking here. Was the stock alternator for a 90 XJ Wagoneer Ltd. really only 60 Amp? My recent mods to the cooling system have presented a minor problem. When raining (lights on wipers intermittent) with A/C on, fan set low to medium, I see...
  10. Engines & Drivetrain
    Hello to all fellow Jeep enthusiasts, New member here needing some advising on my ticking 4.0!! First off, I like to consider myself pretty sufficient with engine diagnostics as I have many years experience working as a Motorcycle Technician. I constantly keep all my machines maintained...
  11. XJ Cherokee Technical Forum
    EDIT: I finished my swap and the jeep is running perfectly. Only minor work to be done, but the work is build thread worthy not engine swap thread worthy.To cut down on confusion for others who may want to do this swap, or similar year swap, here is a real quick summary of what is below. Post...
  12. Engines & Drivetrain
    I swamped my 95 GC. So I had to replace the engine. I grabbed a 89 Cherokee engine before I knew the engines were different. Right now the engine Mis fires and Rpms are bouncing around. I've swapped everything to the 89 engine. All electronics. Exhaust. And valve cover. I'm wondering if even...
  13. XJ Cherokee Technical Forum
    I've got an overheating Renix XJ and looking to kill two birds with one stone. Rather than replacing the radiator with another closed one, and then replacing my leaking pressure bottle, I want to swap one in from a newer Cherokee with the cap on the radiator. I've found a few threads and...
  14. XJ Cherokee Technical Forum
    - Anyone know the differences with testing a 1989 (RENIX) XJ :confused: I noticed the plugs are different, now wonder if I'm testing wrong???
  15. XJ Cherokee Technical Forum
    Hi, I did a few mods now I am stumbling from idle to about 2900rpm. Its not terribly slow but you can feel/hear it has a small stumble, like if it may be lean, until 2900 and then it pulls all the way up. Just looking to see if anyone here has any ideas. Rig: 89 XJ Rebuilt motor about 60k on...
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