1993 2.3L Automatic

I lost overdrive and was wonderign what could cause this. It still shifts fine and drives fine, is it a bad idea to keep driving it? Fluid levels are fine.

 

sounds like the fuse went bad.

 

I am at work, I can check when I get home, but is there a fuse on it? It is an OBD 1 truck and there is no button for it, I have to manually shift it into overdrive.

 

sorry nvm, didn't see that.

 

dont know if this will help... but my OD wasn't working due to low tranny fluid once... i added fluid and it has worked fine ever since....

 

Mine's not working either.. I beleive the OD is computer controled and there is a solenoid that activates it which may be the cause.. I HATE not having overdrive, cuz I burn up a ton of gas on the highway..

 

After more research I know that my transmission is the a4ld. I am taking it to a tranny shop tomorrow and hopefully finding the problem.

 

Odds are it is a bad solenoid or a blown fuse.. which COULD have been blown while you were welding your new bags

 

Is there a fuse for overdrive on an OBD1 truck though? I didn't check because I figured there wasn't. If there is can anyone give me the position of it? Also I am really hoping it is the solenoid it seems pretty easy to fix and decently cheap.

 

I have no idea, cuz I have the same problem with my A4LD but have no idea yet what it is... I just said screw it for the time being because I spent so much time screwing with my trans in the past year

 

I thought the A4LD used a vacuum modulator? Hence a lack of fuses, correct? If it's not the solenoid, my only other guess would be the servo piston.

 

I talked to the guy at the transmission shop and he said that when an a4ld transmission looses overdrive it looses all cooling. We are heading to a show in Tennessee (5 hours interstate one way) and I am curious if there is truth to this.

The way I think of it is...if I drive in "D" instead of Overdrive I don't see how it could hurt anything since overdrive will not be used. Any opinions?

-Daniel

 

I don't know these transmission that well but I believe what the guy meant was that if you are driving with O/D off it will cause more heat because you no longer have that big drop in RPM when O/D kicks in. I think you'd be fine for the drive but then again I used my GTP to drive to PA from CT on a 14 hour trip to pick up a transmission for my GTP lol. Had car load of people for the ride and a trans in the back. They say these cars have sag in the back, I like to think its a reverse rake lol.

 

I drove my 92 with a a4ld for MONTHS without OD. And mind you i was still young and dumb so i was ripping up and down the highway and delivering pizza's in it so i drove it quite a bit like that. I think you will be fine :)