When the 4th splines are stripped, you have a three speed. No slippage issues occur, because there'* no splines to slip on. The trans just stays in 3rd gear.

To test the TCC: Cruise about 45-50+ mph and once the car has settled in at that speed, keep you right foot on the throttle lightly and touch the brrake pedal with your left. Does the rpm rise 200-500? That would mean the TCC is working properly.

Most likely you have a stripped out 4th clutch hub. The parts to fix this are about $100 after fluid and gaskets. The labor to do it is the tougher part. I could walk you through it, but it'* a good part of a day the first time around.

I agree with Bill. If you do this job yourself, also change the EPC (pressure control) solenoid as you have a P1811. That is "maximum adapt and long shift", which usually means that you have a bad EPC.

Where did you get that code description that you had posted?


I have had cars with stripped 4th clutch hubs that did not set any codes.

I checked the codes and nothing came up today. I also tried stepping on the brake when going 40 - 60 many times at different speeds, and rpms did not change a bit. also tried cruise and nothing happens there either. But i did notice today that from a complete stop on dry pavement if i give er some juice it shutters a little and then finally locks up and goes.it does take off right away but shutters for a sec and then normal.any ideas? thanks.......

You are now describing an internal problem.

I was hoping maybe the tcc solenoid or whatever that thing is would be causing that too? at least maybe i could narrow it down a bit.

I guess i don't really uderstand what the tcc does.. does it control lock up in all gears or just od?

Still stumped?

TCC solenoid just controls TCC operation. It could lock up in 3rd and 4th.

Steve, could the pressure soleniod cause the stutter from a stop? Reason I ask is a certain white Regal (yes..still limping BTW, because it'* in line after a Park Ave ) was pulling that same thing. Overall there'* 16K on the trans since I picked the car up and it'* ... still working for the most part.

On the TCC.. let'* do this, what RPM do you have at 70mph after you've been up to speed about a mile? Reason I say that is..when you let off the throttle the TCC may automatically unlock and you might not be seeing it due to the method of testing.

Bill, yes, the EPC could cause a shuddering off the line.

The way to verify it is to hook a gauge up to the main line pressure port and see if then gauge flutters drastically. If it does, it is the EPC.