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Old 06-28-2010, 03:23 PM   #1
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Transmission going out? help...

I just purchased an automatic 2003 wrangler with about 80,000 miles. After about 2 months of driving it, a suddenly started noticing that when it's switching from 3rd to 4th gear (or it could be when going into O/D), the transmission it will jump/slip, I'm not exactly sure how to describe, but it's a slight hesitation while the engine revs briefly. It's still drivable and have no other problems with the transmission. Last week, I decided to turn OFF the overdrive to see if that made a difference, and to my surprise, it didn't slip/jump when the overdrive is turned off. I'm not a car guy at all, so I have no idea what this means. But anyone have any ideas what this I should do? any comment would be appreciated.

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Old 06-28-2010, 03:37 PM   #2
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What you're describing to me sounds like normal behavior for an automatic transmission. The final gear will sometimes slip a little bit depending on how much throttle pressure you're applying.

I could be wrong though. Is this your first automatic? Shutting the overdrive off will lock the transmission in 3rd gear. Therefore you won't see that little bit of slippage.

If I am wrong, there are really only two things you can do to repair an auto. Get a transmission flush, or rebuild it. But to me what you're describing sounds like normal behavior.

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Old 06-28-2010, 03:42 PM   #3
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This is not normal behavior, it didn't do it the first 2 months I had it.

I always hesitant to get a transmission flush, there is so many opposite opinions about them. I checked the fluid recently and it didn't appear burned. I was considering just doing a drain and refill, but I'm not really sure that would even be helpful.

The issue isn't causing me any driving problems, I was just hoping I'm not cuasing further damage and a large repair bill later.
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Old 06-28-2010, 03:54 PM   #4
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My Haynes repair manual mentions the possible need to adjust two "bands" that are located by removing the transmission's oil pan. This requires a torque wrench that measures inch pounds, not foot pounds. My tranny seems to act like it's hesitant when slowing to stop and I give it gas before I completely stop. Like it slips for a second before going. I plan to change my fluid and filter asap and I'll check into the band adjustment while I'm at it. I wonder if Jerry Bransford has this happening to his new Rubi?
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Old 06-28-2010, 03:57 PM   #5
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has the vehicle ever been flushed before? the only issues that arise with flushing automatics are if they've never been flushed, it's best to let it be. the other issue is the wrong ATF being added, or too much/too little.

ok, you've got some OD slippage going on then. do you experience any loss of power, or perhaps a low pitched growl in a certain gear? (mainly 4th)

how's the ATF fluid level? full, little above or below?
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Old 06-29-2010, 08:44 AM   #6
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I have a 97 Wrangler that had the same problem. I took it to a dealer. They said that there was a bur on the cable going from the throttle body to the transmission. Sounded kind of strange. But after letting them replace the cable my transmission now shifts great. I don't know if you checked that cable but it might be worth a shot. Cable was $58 plus a little labor. Good luck.

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