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transmission noise/torque converter??


 
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mikeuax
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Joined: 26 Jan 2008
Location: Leesburg, Virginia

PostPosted: Tue Mar 11, 2008 8:46 am    Post subject: transmission noise/torque converter?? Reply with quote

Sup guys!! I gotta 98 xj 4.0L automatic trans with 80,000 miles.

When the vehicle is warm, on occasion, at a dead stop, with the jeep in drive I hear a rotational scraping, metal on metal, grinding sound. The sound is somewhat light. In other words it doesn?t sound like the world is coming to an end. The sound is coming from the back half of the engine/trans area. When I pull away and hit about second gear it goes away.

I was thinking torque converter, or loose bolts. I'm not sure.

Also, if I shift the jeep into neutral or park while stopped, the scraping goes away.

I recently replaced the manifold with a banks header, put in a new radiator, and trans. lines. I lost a little more ATF fluid than I thought and I might have run it a little low on ATF fluid for a few miles.

Aside from me being a dumbass what could be causing this?

Once again I solicit advice from the Jeep GODS!!!

Torque converter? bad gears? bearing?

By the way Dave you are the man. And everyone else for that matter. Without all of your guys help I would have never gotten that thing in there. I did exactly what you all said and (knock on wood) the header went in pretty smoothly. Sounds nice, and after I get this trans figured out I'm gonna throw on the Magnaflow cat-back exhaust.

-Mike from VA.
________
SMX
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A ENGINE


Last edited by mikeuax on Thu Feb 17, 2011 10:27 am; edited 2 times in total
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DavidXJ
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Joined: 07 Sep 2006
Location: Visalia, CA

PostPosted: Tue Mar 11, 2008 12:52 pm    Post subject: Reply with quote

Sorry I can't help you out with this one too. Replacing a header is one thing, but I have yet to rip into a Cherokee transmission/transfer case (there are others on this forum much more qualified than me). But if you have checked all the fluid levels, changed all the filters, and have proper temperatures and pressures, then my theory on automatic transmissions is "drive it till it fries."
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TheBrat97
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Joined: 28 Jul 2006
Location: Dallas, TX

PostPosted: Tue Mar 11, 2008 9:41 pm    Post subject: Reply with quote

Maybe something touching the driveshaft? Could be a pinion bearing as well. Have you gotten any water sucked in through your vacuum lines on your rear axle?
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