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greenjeans97603

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Discussion starter · #1 ·
Hey guys, I've got a (hopefully) quick question for you. I've been working on and off with my brother's Jeep lately (1990 Cherokee, V6 with 231 transfer case). Mostly been stuff like a new u-joint after his drive shaft fell out, oil pan replacement, and re-bolting the engine and tranny together after a bolt broke and the clutch pushed the two apart instead of the clutch away from the flywheel. That said, I'm pretty new to Jeeps in general, having only done in-depth stuff with my little Toyota.

So... when we start the Jeep, it makes a truly horrible screeching noise (definitely sounds like metal on metal), and doesn't stop. It doesn't start until the engine's actually running, so it's not there while the starter's doing its thing. It's had a pretty consistent leak in the transmission, transfer case, and engine for a while now, so I'm not sure what the state of those levels actually is, beyond knowing that they're not where they should be. My brother hasn't been keeping them topped off, so I don't know much about how much has been leaking for how long. I'm assuming that the screeching is because something's gone bad in there due to lack of oil, but I'm hoping that you guys have some insight that'd keep us from having to junk out the car. The screeching started today only, and has gotten worse. So it's sitting in the garage and isn't going anywhere until I have a better idea of where to go.

Thanks for your thoughts and input - it's definitely appreciated!!

-Jonathan
 
Welcome to the forum Jonathan.
Not much info to go on here, but screeching sounds often originate from the serpentine belt or one of the associated components. If that sounds like it might be a possibility, take the belt off and give it a quick start. If the sound is gone, you'll know you're on the right track.
PS. Your brothers jeep most likely has an I6.
 
The serpentine belts on Jeeps need to be ridiculously tight compared to other vehicles I have owned. More than likely the belt is just slipping at startup and once it slips enough and gets warm, the sound goes away. Try tightening the belt or get a Krikit II gage and measure the tension. You can also rotate the pulleys by hand and see if any have weird play in them.
 
Discussion starter · #5 ·
This Jeep has the weirdest things wrong with it. Turns out a bolt was loose near the starter and transmission, so the starter wasn't seating properly and just kept grinding against the corresponding gear. Problem solved - thanks for the help!
 
lol I'll add that one to the list of screechers.
Thanks for letting us know what it was and way to get in there and figure it out.
 
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