Hello all,

I have a 1991 Bronco XLT with approx. 172k miles on it. The transmission went out a few months ago and I had it rebuilt by a local AAMCO shop. Shortly afterward, my Bronco again started to slip in and out of gear (slipping the hardest on the 1st and 2nd gears). I took my truck back to AAMCO, and they said the problem was that the engine is too old and weak to keep up with - and "communicate properly" - with the rebuilt transmission. They said a (well needed) tune up would alleviate the problem.

So I had my mechanic do a full tune up, and while the engine does run better, the transmission problems have remained. My mechanic said the engine is running fine, that AAMCO is probably trying to misplace the blame on my engine, and that i should take it back.

I want to take it back, but not without some sort of outside knowledge or opinions of what may be going on with my Bronco. I want to minimize my gulllibility in case AAMCO tries to feed me some B.S. when i take my truck back.

So, I just wanted to ask if anyone may have some insight as to what could be causing my transmission problems. Could the transmission be okay and something else be the problem? Or did AAMCO just not to their job?

Thanks,

James

 

is it slipping in and out of low range"4x4" is so could be linkage or transfer case.....but i bet it's that TRANSMISSION!!!

 

PS: there sould be know problem with the communication in less the computer is not doing it's job? oh yeah?? E4OD?? or AOD??

 

Welcome to the only family Ford Truck site, on the net.
Enjoy FTE

 

No, it's slipping out of everyday 2 wheel drive, and it has AOD.

I'm not sure if this other problem applies at all, but when I turn a corner, there is a fairly loud "thunking" sound, as if something is loose and sliding around (maybe). The noise seems to come from the rear of the bronco. I thought it may be a possibility that it could be related to the tranny problem.

 

I have the same problem...on a rebuilt Jasper transmission, I am going to change the tranny fluid and the filter to see if that helps.

 

For the sake of mentioning, I have a 302 C6 and had a ton of problems with the tranny...or so I thought. The engine WAS the case. So while I'll be the first to say that I hate almost every tranny mechanic I've met, don't think that they're totally trying to romp you. But since you said the mechanic took care of the engine, then, yes, I would have to stab at the tranny. Fluid stink, discolored? Crap in the pan?

 

Tranny guys are notoriously crooked and I am so sorry for your misfortune. I would take him to court in a New York Minute if he doesn't make it right or @ least seriously threaten to "Rattle his cage", so to speak. Don't give up until he makes it right. He is full of B.S.
However there is one sure thing that you could do to cover your bases. Buy a $35 code reader and pull the codes yourself. This little tool will save you a ton of money and heart-ache. That is if you have a basic understanding of the mechanical workings of your vehicle. They come with a how to booklet. The engine itself would not cause tranny issues however a bad sensor or computer would. Good luck!!!