• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

85 Bronco II with AL4D problems

bonedoc

New Member
Joined
Dec 4, 2009
Messages
136
Reaction score
0
Points
0
Location
Northeast,Pa
Vehicle Year
1985
Make / Model
Ford
Engine Size
2.8L, durasparked, 350 holley, headers, 2 1/2 inch exhaust
Transmission
Automatic
Hey guys...just looking for some insight. Have an "85 Bronco II with about 25,000 on Jasper motor. The AL4D trams was completely overhauled just a hair under 20,000 miles ago after it blew the trans pump seal and pumped all the fluid out at about 70 mph. Well it blew again, yesterday while on the highway. Anybody have any suggestions as to why it blew or what can be done to prevent it from happening again. I'm planning/collecting parts to duraspark it and swap carb. Would love to swap transmissions or even better a 4.0L motor and trans swap but that isn't in the cards right now do to personal reasons plus it is my only vehicle at the moment.

Thanks
 


jg09

New Member
Joined
Jan 9, 2010
Messages
54
Reaction score
0
Points
0
Location
Everson, WA
Vehicle Year
1991, 1992
Make / Model
Ford
Engine Size
4.0
Transmission
Automatic
did you ever check your tranny fluid since it was rebuilt? did it ever shift funny/hesitantly before it blew again? what were the driving conditions when it happened (uphill? hot?)
 

trail B2

New Member
Joined
Jan 17, 2009
Messages
1,289
Reaction score
7
Points
0
Location
North Eastern Ca.
Vehicle Year
1986
Make / Model
ford
Engine Size
4.0
Transmission
Manual
If there is any kind of resistance in the cooling system for the tranny the resistance in the line puts pressure on the seal and blows it out.If you had the tranny built 20,000 miles ago look for one of those inline filters in the cooling circuit if it's restricted just a little it will roll the seal out and it pops back after it runs out of fluid or pushes the whole seal out.When it does the later you have to pull it for repair.This isn't like a fuel filter it only takes a little resistance.
 

bonedoc

New Member
Joined
Dec 4, 2009
Messages
136
Reaction score
0
Points
0
Location
Northeast,Pa
Vehicle Year
1985
Make / Model
Ford
Engine Size
2.8L, durasparked, 350 holley, headers, 2 1/2 inch exhaust
Transmission
Automatic
The fluid level was good. Yes it has had hesitation problems..always seemed like a timing issue...which is why I was planning on a duraspark and carb swap. I was running on the highway, here in northeast Pa that is up and downhill. Was coming up a hill when it blew. It didn't seem to be slipping at all. Was running 55 to 60 mph. They had checked the tranny cooler when they did the last rebuild, an almost $2,000.00 job. So they are going to check it out and make good on some portion of it but still want to prevent it from happening again.

Thanks
 

Sponsored Ad


Sponsored Ad

Top