I have a 90 928 S4 that is experiencing a unique problem. When I put the car in drive its starts shaking like crazy and an error message reads Differential Locked! I need help figurung out whats wrong? All replies welcome.

 

There is an accelerometer mounted on the body under the driver's seat. So if your car is truely shaking, then the PSD warning is just the PSD controller erroneously detecting a lateral forces, which normally are created by making sharp turns. The dash light comes on when the controller engages the differential lock.

We need more info about the shaking. Is the shaking from clutch chatter?

borland
90' S4

 

And you are sure your car is not shaking for the same reason as this one?

http://www.big-boys.com/articles/loveyourcar1.html

 

Nicole: THANK YOU! You may have hijacked this thread. But I think tek had been put on the trail, so we should forgive you.

That was great. Did I laugh so hard, b/c I feel guilty and my wife knows the shark does compete for my attention??

 

no i saw it. I just did not reply. Nicole why would you waste your time with such ...bs. Funny it was but in approrpiate as well.

 

Tekexec, darn right!! This is serious business! No room for light hearted humor here, there are lives at stake!!
Nicole, you're a BAD girl!! (That's why I love you!)

 

me thinks the problems are similar. both cars are f'd!

 

What a bunch of comics...still the 928 is now visiting S M Motorsports for an evaluation.

 

Hmmm,,, S&M visit? Variations on the theme above.

Doc

 

Tek: I thought execs could spell? Inappropriate is one word. So you not only don't like Nicole's post you now dis the rest of us??? You have 3 posts, Nicole has 6K. That was an unusual post from her, but I think given some time, you will see that you get help here and not every single post will immediately solve the problem.

Suggest you follow the error message and consult WSM.

Lastly, some people search the archives before asking a question.

I quote Wally(?) (someone else you may come to respect) freely, the advice is free, we will gladly refund every cent if you are not happy with it.