94250turbo
Full Access Member
Starting to think my trans problems are a computer problem. Im gonna have the dealer check it out but the woman wouldn't tell me how much a computer is. Anyone know?
Main computer??
- Thread starter 94250turbo
- Start date
icanfixall
Official GMM hand model
Mine was around $600.00 about 10 years ago.
You were given a lot of suggestions in your other thread but I didn't see any responses... FIPL, speedo, tach, ToT, codes etc
94250turbo
Full Access Member
Ive done new fipl sensor, vehicle speed sensor in rear end, new solenoid pack and valve body.
Does your tach work right? No dropping to zero at idle, bouncing around, etc
94250turbo
Full Access Member
Sometimes my tach does mess up.
The EEC IV rarely goes bad. Plenty of them on Ebay. Tach jumping around is not good, will immediatly put you in limp mode. You also have a EEC relay, did ya know that? Don't think new EEC IV are available anymore, if the dealer takes a long time to get one, you can bet it's a repaired one off ebay. 
94250turbo
Full Access Member
I just ordered a new tach sensor. I looked at mine and some wires are exposed that go into the sensor itself. Is there any specific instructions for replacing it?
trackspeeder
Stone crusher.
The EEC IV rarely goes bad. Plenty of them on Ebay. Tach jumping around is not good, will immediatly put you in limp mode. You also have a EEC relay, did ya know that? Don't think new EEC IV are available anymore, if the dealer takes a long time to get one, you can bet it's a repaired one off ebay.
Ford sell reman TCM's flashed to the final shift program.
94250turbo
Full Access Member
Replaced the tach sensor and the trans will still go into limp mode and start banging gears. Well I kept driving home it went out of limp mode but kind of acted like it was in to high of gear. Jumped on the throttle it banged gears and went back into limp mode. Any suggestions?
If it's sensitive to throttle input suspect the FIPL. Check for smooth output through the entire range, even if its new.
