I am in need of some advice.

I did post part of this issue a couple of weeks ago in the 2nd Generation area by accident but did rec. some good info. Now I know a bit more of the problem. When the temperature drops below 20 degrees my tranny slips in between OD and drive. It also will slip a bit when locked out of OD, it is also intermittent. It will go down the road fine for a while and then act up again. If it's above 20 degrees it runs fine all day long. I put a new APPS in and went through the calibration procedure that I found here, (thanks) as suggested by my local dealer mechanic and my local transmission shop. I trust both mechanics and they both suggested the same thing. How could a guy go wrong??? Well, $318.00 in the red and I still have the same problem. I had asked about the temp switch on the tranny and I was told it would not cause the problems I am having. I do not know eitherway. Would a bad solenoid cause it to shift funny? Working in the hydraulic field I have problems with coils / solenoids causing issues at different temps when they are bad. I would think being the solenoids are in warm tranny fluid it would not be problem. Any advice would be appreaciated. I hate to pull the tranny out and have be somthing else.

Thanks,

Hydraulic Guy

 

Try blocking off half your tranny cooler and see what happens, whats your engine temp averaging????

 

Jrr,

Engine temp runs around 180 to 190 consistantly and I also have weather front on it. I did try something today, I down loaded a PDF file from ATS Diesel on running a jumper from the PCM direct to the APPS. I did it this afternoon and it seems to have taken care of the issue. I took it for a 20 mile cruise and had no problems. It's also 6 degrees outside. I'm gonna leave it outside tonight and see how it does tomorrow. I will post my findings.

On another note, I spoke with two guys at ATS Diesel today on the phone for a couple of clarifications on the instructions and they were excellent to talk to. Thanks!

HydraulicGuy

 

After a week of running in mid 20 degree to -10 degree weather I am happy to report the external wire I ran fixed my problems. Thanks for the help.

HydraulicGuy