plumberh2o

As I said,
This is something I have never run in to. My new rear turned it self into a Detroit locker.
I know this is not sounding sane, let me start from the beginning.
I installed a new rebuilt Dana 44 in my 86 coupe I drove it about 200 miles and everything was fine. I got into some bad weather and had some fun spinning some wheels on the wet road and all of a sudden the posi will not let go. When I go around turns the one tire hooks and the other tire skips like a DETROIT LOCKER. Will this thing ever let go or am I going to mess things up by driving it this way.

Plumberh2o

parafrog

well something ain't spinning. stuck clutches? shoot i don't know, but i do know you need to talk to whoever built it. building rear ends ain't easy. i did it one time with no dial indicators or shise to check backlash or install bearings, but i was good, resilient, lucky and just kept pulling stuff apart untill the pattern looked good. it sounds like your re-builder could be none of these. but be positive--everybody makes mistakes.

i hope you get a direction of inquiry here, but i don't think that will help your negotiations with the assembler. call them, start out polite, then get more aggresive. or even better, go there and do the same thing--if you are close enough.

did you add posi additive?

LS6 Motor

When you installed the rearend, did you put the lube in it, or was it full from the rebuilder? The reason why I ask is that there is an additive you must put in along with the gear oil. The additive is needed to make the clutches in the differental work correctly. Just a thought....

JackDidley

The posi becomes locked when it gets hot. Happened to me on a C3 I used to have.

parafrog

is there anybody out there?

not pink floyd. which one is pink?

plumberh2o

I put the lube in the rear synthetic lube that needs no posi fluid. This rear was rebuilt by Ickers rear rebuilds and has a 1 year guarantee. If I feel it is not going to fix it self then I have a days work to remove it again and install another one when I get it from Ickers.

Thanks but the thing I asked was if anyone else seen this happen or had it happin to them and what was wrong.

CF6873

I have read that 2 bottles of the GM only additive are nessessary in some rears. I would try that before pulling the rear.

geogolf

i think before you give up I would buy a bottle of limited slip additive and put that in to see if its frees clutches up might work might not gear oil you put in might not had enought additive

redrose

toss in two bottles of gm positration lube additive p/n 1052358.

stuff works...i've heard its whale oil,don't tell the tree-grabbers.

plumberh2o

I a going to put two bottles of GM POSI FLUID in the rear and take it to the big parking lot the next time it is raining. Then I will see if the same treatment will make it better or do it in.