Tires spin after replacing trans

[jim01241958]

I helped a friend replace his trans e4od in 96 f350 4wd diesel. Added fluid and ran it through all the gears,it was doing fine. Took it for a test drive it started idling high. When we parked it started spinning the rear tires??? It idles fine in park but when put in gear idle goes up and it starts spinning the tires. We removed the battery cables before change and replaced them last. electrical glitch???

 

[Skandocious]

Welcome to the forum!

Definitely sounds like an electrical problem. For the tires to be able to spin at idle, the engine would have to be idling AWFULLY high. The transmission cannot mechanically increase the engine RPMs... Did you try pulling the codes?

 

[jim01241958]

Havn't checked the codes yet. He and i are doing other things including our day jobs. Do you know if that is an OBDII? We won't be working on it until Sunday but i was hoping for some advice. The owner said the wires were different colors than his on the plug end going in the trans??? Wonder what else he didn't tell me???

 

[Skandocious]

96+ half tons are OBD-II, so yes it's OBD-II. Did he get the trans from another OBD-II truck? Were they both E4ODs?

Different wire colors? That sounds like bad news... I imagine that if he's using the wrong transmission/engine combination that his computer will catch it and throw a code. First thing-- I'd pull the codes.

 

[LEB Ben]

96+ half tons are OBD-II, so yes it's OBD-II. Did he get the trans from another OBD-II truck? Were they both E4ODs?

He said a 350 4x4...so wouldn't that be OBD-I?

 

[NeXtras]

He said a 350 4x4...so wouldn't that be OBD-I?

plus, its a diesel.... diesels came with OBD-II later didnt they?

 

[Skandocious]

Whoops I thought he said it was an F150. Yeah I believe that's OBD-I but I'm not totally sure. I don't know if the rules are cut and dry because my brothers 97 F250 is OBD-II. I'm pretty sure all 96 3/4 and 1-tons are OBD-I.

 

[LEB Ben]

Whoops I thought he said it was an F150. Yeah I believe that's OBD-I but I'm not totally sure. I don't know if the rules are cut and dry because my brothers 97 F250 is OBD-II. I'm pretty sure all 96 3/4 and 1-tons are OBD-I.

Well yeah...Thunder is OBD-I...but I have no clue about diesels of that vintage, and had no clue if that would make a difference.

 

[O'Rattlecan]

We can just have him look under the hood and see if he has the OBD-I hookup on the drivers side fender near the firewall.

Ryan

 

[NeXtras]

considering its an e4od, there has to be some sort of computer control..