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A4ld transmission nightmare


Chuckc

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Joined
Aug 21, 2019
Messages
40
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8
Location
Florida
Vehicle Year
1988
Make / Model
Bronco ii
Transmission
Automatic
So this 1988 bronco ii has been a nightmare for me but anyways here’s my issue now. A4ld automatic 4x4 had water in trans and had engine issues once I got engine running good flushed milky trans. Went to put in reverse one day and locked up. Would go in overdrive and tires seemed to spin decent in drive also. Dropped pan found metal and milky oil also found plastic seal in pan. So removed trans took completely apart and found springs retainer on forward drum popped off and tore up bushing exc. replaced forward drum put new clutch packs inspected everything put back together re installed and still have issue... it will go into reverse and tires spin for about one second then locks up. Overdrives seems to work perfect and drive and low gears work but might be a bit sluggish.. please help possible solinoid valves or something? Pics are from before rebuild still haven’t dropped pan again getting tired of messing with this
 

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franklin2

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Dec 24, 2019
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Location
Virginia
Vehicle Year
1984
Make / Model
Bronco II
Transmission
Manual
Never did much serious work on a automatic trans, but from what I am told, it's very difficult to perform surgery on a automatic and be successful. Once something fails, the bits and pieces and contaminates are circulated throughout the whole trans AND the trans cooler in the radiator. So a complete rebuild is usually required, and a thorough flush of the cooler lines and cooler, or replace the radiator entirely.

I did a c4 swap once long ago. Torque converter had some damage to it so decided to use the old torque converter from the old trans. Bad idea. The trans I swapped in failed in short order. Found out the old torque converter sent little metal bits all through the newly swapped in trans, it started making a buzzing noise and would not operate in reverse.

I am guessing you have contamination in your valve body causing your valving to stick. That's just a guess though.
 

Chuckc

Member
Joined
Aug 21, 2019
Messages
40
Reaction score
2
Points
8
Location
Florida
Vehicle Year
1988
Make / Model
Bronco ii
Transmission
Automatic
Never did much serious work on a automatic trans, but from what I am told, it's very difficult to perform surgery on a automatic and be successful. Once something fails, the bits and pieces and contaminates are circulated throughout the whole trans AND the trans cooler in the radiator. So a complete rebuild is usually required, and a thorough flush of the cooler lines and cooler, or replace the radiator entirely.

I did a c4 swap once long ago. Torque converter had some damage to it so decided to use the old torque converter from the old trans. Bad idea. The trans I swapped in failed in short order. Found out the old torque converter sent little metal bits all through the newly swapped in trans, it started making a buzzing noise and would not operate in reverse.

I am guessing you have contamination in your valve body causing your valving to stick. That's just a guess though.
Yeah that’s the direction I was going next maybe swapping out solinoid valves and try cleaning valve body again.. used about a can of brake clean and compressed air last time. It does make a bit of a buzzing noise and I did re use torque converter.
 

Dirtman

Former Middleweight Moss Fighting Champion
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May 28, 2018
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Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
The a4ld only has two solenoids. The torque converter clutch and overdrive. Neither effect reverse.

My advice is stop messing with it and replace it. You had major fluid contamination, broken parts and metal floating around in it. Chances are it needs a total overhaul which means new pump, sprags, converter, possibly drums, and a valve body rebuild and not just a soft parts kit like you did.

Not trying to be sarcastic or a jerk, just trying to save you from going further down the rabbit hole. Even buying a "rebuilt" transmission is sometimes a nightmare because they only replace soft parts (clutches bands and seals) when these transmissions often require a full overhaul.
 
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