Mark, what are you thoughts on how this could be causing the slip?

 

umm..he just gave you his thoughts on what was causing the slip,doesn't mean that's the case,only thing that will get you a true and definate diagnosis is to simply bring it to a Audi mechanic or a Audi stealership and have them run some tests for a not so small fee of corse.

 

The automatic transmissions seem to be very sensitive to low fluid level in the transmission. My sons was probably between a quart and a pint low and it would not go into gear until you either raised the engine speed or the fluid warmed up a little bit. On really cold days that would take about 3 or 4 minutes of running the engine. After it was warmed up it operated just like it was supposed to. I could be your problem, but with the communications issues your having between modules there might be some other problem.

 

who are you reffering too? There were a few users responding to this thread,use the "quote"option to specify whom you are talking too.

 

Well I put the car up on a lift today and noticed a large leak between the trans and the engine. It's transmission fluid so I'm assuming I have a sipping problem due to low fluid. I still need to check the fluid level but at this point I can see the trans needs to come out. Does anyone know if the trans pump is on the front of the trans or if there is just an input shaft seal?

 

I always reply to the original posters problem. I will usually ignore posters who try to add their problem to someone elses posts, they really need to start their own post as everyones issue is unique. You confused the issue here because I thought the OP had communication issues with the TCM but his was just slipping and it was you who had the no 4th gear and a comm problem between modules, as i don't always read the names of the people making the posts. Your solution is not going to be the same as his and no one gets the help they need when there are multiple posters with different problems in the same thread. If everyone keeps their questions/problems in separate threads everyone gets helped alot quicker without everyone going off in different directions by getting symptoms from 2 or 3 cars.

 

thank you I agree. looks like this trans is coming out. Now I guess the next questions is does anybody have a CJP transmission they would like to sell?