Trans was rebuilt at just under 90xxx by a very good shop. Have had a few simple things go wrong since, solenoid pack, small leak and so on. Would still get a CELight from time to time PO740-PO750. Recently left it with the shop for over a week to recheck things. Trans was removed and gone thru very carefully again and nothing found wrong, was driven with the latest Snap on Scanner, solenoids work ok, converter (replaced) locks correctly. CVI is good, connections cleaned and checked, but found no reason for any codes. NO charge for the redo. Less than 200 miles later, DING, CEL is on and in limp mode. Key off and restart and drives normal but CEL is on. Excellent shop says there is nothing wrong with the trans and some thing else is causing codes. They don't want to throw parts at it not knowing the problem but we are about ready to. Has anyone else had such a problem or may know what else to do ? ? ? Never had a spedo problem and have added a extra ground strap from the batt. Thanks. BW

 

lots of info but what is the currant issue? what are the codes for the light?

 

Sorry for my bad writing but 740 & 750 was found yesterday by a low level scanner. Point is that after a remove and a careful go thru again and driving with a expensive scanner checking things and everything is working fine and that less than 200 miles later DING for the light and limp mode, then restarted and drove home normally except for the CEL. Only place I could find open to scan it was a parts house to check it on a sunday. I also believe along with the trans shop that something else is failing and causing the codes. Could be a simple thing like a wiring harness or the trans controller. There must be someone else that has had a problem like this that even a new trans didn't fix ? Thank you for your interest. Have heard of people that have traded cars just to get out from under a smaller problem than this even before they were paid for. *BW*

 

the 740 is the torque converter TCC
They could have used cheap parts for all u know

 

Thanks Tech but the original conv started with the same codes causing the trans to be rebuilt and a new converter was put in and the same codes come back after a while. Not sure if this is the 3rd conv or not. Thanks. *BW*