Converter Locking and Unlocking

[WARLOCK]

I got my Trans back in my truck last week and the converter is Locking up again. The problem is it will jump between 2000 and 2300 rpm at about 70. Converter is a new 2500 Circle D. Any Ideas?

[GasGuzzler]

Valve body leak, cracked TCC solenoid...or maybe another issue.

[WARLOCK]

Is this hard on the trans?

[farmtruc]

Is this hard on the trans?

A converter looks thousands of times in it's life, it won't hurt anything, but if it stays unlocked and you travel a long distance, the trans might heat up if you dont have a good cooler

[WARLOCK]

A converter looks thousands of times in it's life, it won't hurt anything, but if it stays unlocked and you travel a long distance, the trans might heat up if you dont have a good cooler

I have a 30k gvw cooler with a 10 inch fan mounted to it.

I just went out and commanded lockup and it seemed to work for a bit and then unlock. The TCC slip would range from 200 to 700 at times. but mainly its about 200. I dont know much about the TCC duty or any of that other mumbo jumbo, but if anyone does I can tell you what the numbers are. If I hold the gas steady, it will stay locked up fine unless I go up a hill. If I put it on cruise it locks in and out.

[GasGuzzler]

Should not be anywhere near 200 slip speed at 100% duty cycle on the TCC. Should be more like 12 or 8 or 23 or something low. 700 is completely unlocked.

[WARLOCK]

When its working it is at 0 but when it unlocks it goes to 200 and then back to 0

[WARLOCK]

Any Ideas?

[farmtruc]

So you commanded the PCM to keep it locked and the status light stayed GREEN or ON or ENGage and it still unlocked?

[WARLOCK]

So you commanded the PCM to keep it locked and the status light stayed GREEN or ON or ENGage and it still unlocked?

It will lock but will unlock after a little bit. Im going to try it again later on.