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A4LD issues


Rolln_Thunder

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I've got a 1990 Bronco 2 4wd that's giving me transmission issues, and I couldn't find anyone having my same issues when I did a search.

The trans started by stuttering back and forth between gears in overdrive.
It got a little better, then had different problems all-together.

Now when I put it in gear, I have to give it a few blips of the throttle to get it to move.
When it "hits", it's a hard hit and doesn't slip or feel mushy - just "thud" and it goes.

It won't drive unless you start in "1" or "D" and give it a rev.
Same with Reverse.

Once your moving you can manually shift through the gears without issue, but when you slow to a stop you have to drop it into "1" and shift up manually.
Hope I'm describing this in a way it can be understood.

Tried replacing the Vacuum Modulator with no change - hose is also good.
Fluid is full (not overfull either), and no burned smell.
No leaks.

Hope that's enough to start with for suggestions.
 
Last edited:


Surrey

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2.9
Transmission
Automatic
Sounds like its time to rebuild or replace that tranny.
It is F'ed in the A.
 

MountainMike

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245 CID
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Total Lift
2"
Tire Size
31"
My credo
The fun begins where the pavement ends
Sounds like my transmission. I put in some Lucas trans-fix as a band aid since all my current funds are going into the engine. Both our transmissions are singing their death songs, how long the chorus is I don't know.
 

eclipse2001gt

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Transmission
Automatic
Well at least you have not lost reverse like i did at the worst moment. Now trying to hunt down a manual trans to replace the auto so i don't have to worry about having to work on a auto trans. But might rebuild the auto and sell it when i get the chance to do it.
 

Surrey

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Sounds like my transmission. I put in some Lucas trans-fix as a band aid since all my current funds are going into the engine. Both our transmissions are singing their death songs, how long the chorus is I don't know.
Im not sure about Lucas trans-fix specifically, but Im pretty sure shit like that actually worsens the condition of your tranny in the long run, because it causes seals and shit to swell up, and lose their integrity. They become soft and disintegrate over time basically, which means a lot more work when it comes time to rebuild.

My advice would be replace the tranny with one from a 92-3 Explorer, and bolt that up to your 2.9l torque converter. From my understanding, some of the 91 a4dl are the same as the earlier models, while later model 91-93.5 Explorer tranny has stronger internals. In 93.5 something changed, but I can't recall what exactly.
Tech Library about it:
http://therangerstation.com/tech_library/AutoTrans.html
Some additional info:
http://therangerstation.com/forums/showthread.php?t=103067

Hope this helps.
 

Rolln_Thunder

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Tried the Lucas as a band aid and it fixed everything but overdrive.
 

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