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  1. XJ Cherokee Technical Forum
    Hey folks. I hope that whenever you come upon this thread you're having a good day and doing well. I have a 1990 Cherokee, with the manual, and the 4.0 I6. I've decided that I adore this vehicle enough that I'm going to try and make it the best possible Jeep (and possibly buy a 1990 Comanche...
  2. YJ Wrangler Technical Forum
    Howdy everyone, I had an account on here 5-6 years ago and failure to access resulted in a new account. I am the second owner of this 1990 YJ 2.5L, got it with 89XXX miles and it now has 144XXX miles. It is no longer my DD, so I have the ability to now work on it more extensively. This thing has...
  3. YJ Wrangler Technical Forum
    I ended up mangling up the area where the windshield hinges mount to the tub while taking the old seized hinges & bolts out. I had figured a grinder is the second best thing to a nice set of drillbits... Whoops. It may seem like an obvious answer, but is there any better way than cutting out...
  4. YJ Wrangler Technical Forum
    Ideally, I'd like to move away from the older metric filters to the newer 3/4" x 16 oil filters on my 90 YJ 2.5L. The are more common, and there is a better selection of the better quality filters locally. I understand the basics, I need Mopar part # PN 53007563-AB, the oil filter adapter...
  5. YJ Wrangler Technical Forum
    Hey guys I'm just now getting elbows deep into my 1990 YJ 4.2 build and have found most of the info I need online, but there are still a few questions I have if anyone can help. 1. What model year s-10 or other vehicles with swap with my steering column, it has a Saginaw column in it now and a...
  6. YJ Wrangler Technical Forum
    First post here. I've been following JF for a while now. I recently bought a 1990 YJ with a 2.5L manual drive. Since driving it around a bit I've noticed that it smells like it's running a rich. When the back window is open the fumes actually burn my eyes and my clothes smell of gas/bad exhaust...
  7. Engines & Drivetrain
    I recently bought a 1990 YJ with a 2.5L manual drive. Since driving it around a bit I've noticed that it smells like it's running a rich. When the back window is open the fumes actually burn my eyes and my clothes smell of gas/bad exhaust. I'm not sure what the issue is but I've been digging...
  8. XJ Cherokee Technical Forum
    I have a 90 Cherokee pioneer, out of no where my blower motor stopped working, ive checked all of the fuses and replaced the resistor, also ive hard wired the motor and the motor worked, im am at a loss for what to do next, any thoughts?:confused:
  9. MJ Comanche Technical Forum
    I have a 1990 jeep comanche 4.0l i6. 4 speed auto . I had a buddy put in a new engine for me. With the engine he did new injectors and intake manifold. When I got it back it ran a little rough. My main concern is that when I'm driving and it shifts from 3rd to 4th and drops rpms to about...
  10. YJ Wrangler Technical Forum
    I measured from the bottom of the rockers to then ground at got 22.5" from reading online i was lead to believe the stock number is 18" does this mean it has a 4.5" suspension lift. Please let me know and feel free to be brutal I know next to nothing about lifting a Jeep. Thanks
  11. XJ Cherokee Technical Forum
    first off i have the closed system still on my 90 laredo and im planning on switchin it over to an open system but not until this winter. I had a blown head gasket and i fixed that, also had the cylinder heads resurfaced. Replaced the water pump, thermostat, thermostat housing, i checked all the...
  12. XJ Cherokee Technical Forum
    I can hear the fuel pump but there's no pressure. Got it to fire up using starter fluid in the throttle body. The pump runs the entire time the key is in, and stood when I crank it. There is about a quarter tank of fuel.
  13. Jeep Buying Forum
    Whilst looking through car ads on Craigslist the other day, I came upon a seemingly gorgeous Jeep Wrangler YJ circa 1990. It's white, has a gorgeous body, and comes with a bikini top - everyone's dream, right? Haha It's automatic transmission with an inline 6 cylinder engine. Power steering...
  14. XJ Cherokee Technical Forum
    1990 Laredo had intermittent starting problems with hard start (long crank) after it was hot. Finally died. Replaced: fuel pump and filter after testing fuel pressure at rail - 30 psi when running; dropped to zero with old pump when shut off. New pump kicks in, but no fuel pressure at rail...
  15. YJ Wrangler Technical Forum
    My windshield wipers on my '90 Wrangler 4cyl do not wipe all the way across in front of me, The blade stops almost directly in front of my field of view. Is there a way to make it wipe farther or is there a way to adjust it manually so the arm is in a different starting position to compensate...
  16. YJ Wrangler Technical Forum
    Hey all, New to the forum! I have a classy 1990 Wrangler 4cyl. My PCV valve keeps popping off whilst I drive the beast. The engine runs fine and purrs like a kitten. But it seems like there is too much pressure under there? does that even make sense? How can I prevent that bad boy from popping...
  17. YJ Wrangler Technical Forum
    I just bought a 1990 YJ from a guy who was doing an engine swap but didn't know what he was doing. He was using a 98 TJ donor motor and sold it to me. He insists there was a 4.0 in it. It was a 4.2 258. It had to be, right? No 4.0 1990s were factory? I bought a 4.2 and am going back to stock...
  18. YJ Wrangler Technical Forum
    Question for the carburetor masterminds. My 1990 Yj 4.2 is having trouble idling. I have already done a few simple things to correct this but I am not having any luck. I tried raising the idle, adjusting the gas/air mixture, and also preformed the "nutter bypass," but yet every time I stop at a...
  19. Audio, CB & Ham Radios, GPS, & Electrical
    I recently purchased some fog lamps for my 90 XJ and mounted them in the stock holes, using the stock harness. 18W CREE LEDs. I also have some 36w 12 led rigid knockoffs on their way. They look great but I have a few questions for the lighting buffs out there: 1. With one light connected it is...
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