cmsdno

Hello Everyone,

I'm new to the forumsand hope to find someone that can help me with an issue that none of the shops around me can seem to answer. I have a friend that just purchased a 92 LX 5.0 convertable and the car has no power at all. He just had the trans (automatic) rebuilt as he was told the power issue was the trans slipping. I drove the car last night for the first time. From a dead stop I matted the gas pedal and expected to be side ways in the middle of the road but nothing, I could have run faster. I even tried pulling the shifter into the 1 position and tried it again, still nothing. Leaving the trans in OD I matted it again and as soon as the rpm's hit 3000 it shifted to 2nd and again at 3000 rpm's it shifted to 3rd. I've owned a lot of hot rods myself but I've never worked on one of the later model fuel injected, computer controlled cars but I know this car should perform better than this.

He also just had a complete tuneup done, all new everything. Any ideas would be greatly appreciated.

Thanks,

Danny

richs347

Did the shop install the trans or did he take the trans to them and re-install it himself. What was the trans doing prior to removal and how is it different now. Did it work correctly right after the install?

I would also check the fluid level and make sure theTV cable is correctly installed.
http://www.txchange.com/aodadj.htm

The torque converter was installed correctly and bolted down? Is this the stock converter?

The computer has no control over the trans on that car. Computer controlled transmissions for the Mustang didn't start until '94.

Other than that.....??

nitrous_bob

well you just described a perfectly running aod 5.0

they shift too soft, too soon, and have no way to manually shift 1-3 (safely anyways)

other than that they are geared horribly, and are about as sloppy as my great-grandmas cootchie

aod cars NEED 4.10 gears and 3000 stall converter MINIMUM, just to be on par w/ a 5-speed car and 3.08 gears

by the time it's said and done....cheaper and eaiser to buy a lentech tranny or just go c4 or t5

sorry to say theres nothing wrong w/ it

cmsdno

I appreciate the feedback guys,

He actually took the car to the shop and they pulled the trans and rebuilt it (3 times at this point), he keeps taking it back. It has been acting this way since he purchased the car. Unfortunately his wife picked the car up and he was unable to drive it before purchase (back surgery). Is it normal for these cars to have the lack of power as his does because of the AOD trans? Like I said before when I matted it from a dead stop I expected to be sideways. If it makes any since it almost acts like the converters are stopped up (not saying that's what it is, just a comparison). Nitrous_bob mentioned a C4, will a small block C6 fit in these cars?

8barrell460

I had a 90 5.0 gt AOD. It was crappy, and sucked as far as power goes. I got almost 150k out of it before rebuilding it. It was reliable other than a few seals leaking, and me having to replace them. If I could go back I would have gotten a T-5. Much more *****. When you're 16 though it's better than most though.

88Mach1

[sm=funnypostabove.gif]

uedlose

it is very hard for someone on here to tell the car is right without driving it. But your friend does have one the most ill running stangs of the FOX body's. AOD and then it is a rag top so it is heavy. Like said above gears and a converter would help a lot. Why has the shop redone it 3 times? maybe the shop is the problem take to someone elsefind aMustang guy and ask him to ride in it. yes the C6 will fit but why? it is so big and heavy it wont be much better then what you have + NO overdrive with it. the AODs work good if done right.Does the car have any mods done to it? it could be all stock with the air silencer still in place,

cmsdno

In talking with him, I believe the car is all stock with the exception of a muffler change. The car has been back to the shop 3 times due to the fact they can't seem to get it right as far as he is concerned (i.e. changing gears at 3000 rpms). I'm not exactly sure what a airsilencer is and what it's function is, can that effect performance? Can anyone tell me what the performance of these cars was like off the show room floor? Did they have a lot of power new? This car currently has approx 91k miles on it.

uedlose

while the 5.0 run good for there time that is the heaviest Fox body they made around 3400# orso then strap a slush box aod behind it and no converter with 2.73 or 3.08 gears and it sure does hurt the way they runmid 15 or low 16 in the 1/4 would be on par for that car. Do a search on the Internet about a 10 min performance tune up on a fox body and you should come up with some things that will help. Set the Timing up to around 15 degrees to start you can put a cooler thermostat in try a 180. The air silencer is behind the air box it sits inside the fender if its there take it out you can set the TPS to help some to. But to tell you the truth the car wont be very impressive but the sky is the limit with the 5.0 cars.cheap and easy to work on. But the there are some of the 5.0 cars that ran like there head was on fire and there *** was a catching. I had a old Cop 5.0 that would fly stock I am talking 13.8 spinning the tires bad. and that is pretty go for those cars.