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auto tranny not shifting

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Old Sep 26, 2011 | 12:14 AM
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Default auto tranny not shifting

Hey guys there's a Guy on Craigslist that is selling a 95 xj. He says the only real issue is that auto granny isn't shifting you have to manually shift the gears.

Is this something that could be easy to fix? Or would you think it probably needs a new tranny?
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Old Sep 26, 2011 | 01:45 AM
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I'm a nearly absolute greenhorn, just learning. There may be 3 computer controlled solenoids. Sounds possible the insides are fine and it's the stuff they stuck ON it that might be on the fritz. That said, this morning I didn't even know if I was in gear.......
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Old Sep 26, 2011 | 02:29 AM
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Originally Posted by Red82
Hey guys there's a Guy on Craigslist that is selling a 95 xj. He says the only real issue is that auto granny isn't shifting you have to manually shift the gears.

Is this something that could be easy to fix? Or would you think it probably needs a new tranny?
The tcu either isn't hooked up or is fried. Don you're correct there are 3 solenoids. Thing that's tipping me off to tcu is that he can and has to shift manually.

Last edited by Slick761; Sep 26, 2011 at 02:32 AM.
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Old Sep 26, 2011 | 03:10 AM
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Not sure on the 95 but the older models have a fuse under the dash beside the tcu? If its blown it will have the same effect.
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Old Sep 26, 2011 | 06:48 AM
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Originally Posted by Zj heep
Not sure on the 95 but the older models have a fuse under the dash beside the tcu? If its blown it will have the same effect.
Could be that simple. Fuse doesn't even need to be blown, can just be corroded.

Even if it was the TCU, which is highly unlikely, they're a dime a dozen at the JY.
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Old Sep 26, 2011 | 12:50 PM
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Default auto tranny not shifting

on my '95, and it happened two or three times, but the speed sensor went kaput, and after changing it using auto parts store ones, I finally got a MOPAR one (same package, same looks), and it has been in for about 4 years. Everytime it failed, I would have to manually shift it to make it work. Hope this helps a little.
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Old Sep 26, 2011 | 01:07 PM
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Still not sure its worth the 1200 bucks he wants for it.
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Old Sep 26, 2011 | 02:38 PM
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10 AMP FUSE
Attached Thumbnails auto tranny not shifting-32-trans-switch.jpg  
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Old Sep 26, 2011 | 02:47 PM
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Originally Posted by DFlintstone
10 AMP FUSE
Oh NOW I know what that fuse hanging under my dash goes to.... been wondering. Mines on the driver side, not next to the tcu like yours just FYI. Guess they aren't all in the same place.
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Old Sep 26, 2011 | 05:01 PM
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We're assuming 4.0L with AW4, correct? Later XJs have the TCU fuse in the power distribution box under the hood.

My normal answer is that if it shifts OK manually, but not in 3 or D, its an electrical issue.
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Old Sep 26, 2011 | 07:19 PM
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It,s a 1990 4L 4 speed auto. Dont know if it's an "aw" or what. With that fuse out, starting off in drive it will slip allot. Still with it out put it in first and it's solid. Fuse in, solid in drive taking off.

So with that fused circuit not working it will feel punky taking off if it's not in first.

Last edited by DFlintstone; Sep 26, 2011 at 11:00 PM.
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Old Sep 26, 2011 | 08:24 PM
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Originally Posted by DFlintstone
It,s a 1990 4L 4 speed auto. Dont know if it's an "aw" or what. With that fuse out, starting off in drive it will slip allot. Still with it out put it in first and it's solid. Fuse in, solid in drive taking off.

So with that fused circuit not working it will punky taking off if it's not in first.
Ya its and aw4 :-)
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Old Sep 26, 2011 | 09:54 PM
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sounds like the tps is bad.
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Old Sep 26, 2011 | 11:03 PM
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As far as buying one....I'm in a position with my (Sept.89)262K. Got to decide if I want to keep it up indefanently or down-grade to something newer. Kidding! What it COMES DOWN TO for me is THE LITTLE STUFF. Generally the engine and everything below the knees is not an issue that can't be handled.

It's the locks, hinges. cranks, latches, panels, rear hatch, seats. Pretty much anything the PO could reach. The bumpers have seen some action, the headliner fell, weather stripping in taters, the windshield is so pitted I, (a shameless cheap-skate), am considering changing it. That's the sort of stuff that would put me off. If it's clean and tight, at $1200 you could put a bit into it and come out OK. I paid 2k for my 90 with 140K, (for my Mom), in 02. The only tow in 10 years was when the little pin that drives the fuel pump impeller gave out. About twice This > l big!
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Old Sep 26, 2011 | 11:14 PM
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Originally Posted by DFlintstone
As far as buying one....I'm in a position with my (Sept.89)262K. Got to decide if I want to keep it up indefanently or down-grade to something newer. Kidding! What it COMES DOWN TO for me is THE LITTLE STUFF. Generally the engine and everything below the knees is not an issue that can't be handled.

It's the locks, hinges. cranks, latches, panels, rear hatch, seats. Pretty much anything the PO could reach. The bumpers have seen some action, the headliner fell, weather stripping in taters, the windshield is so pitted I, (a shameless cheap-skate), am considering changing it. That's the sort of stuff that would put me off. If it's clean and tight, at $1200 you could put a bit into it and come out OK. I paid 2k for my 90 with 140K, (for my Mom), in 02. The only tow in 10 years was when the little pin that drives the fuel pump impeller gave out. About twice This > l big!
Don't go stealing my parts from Windsor pick n pull!
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