Transmission slips when it warms up

ROBSAAB

MEMBER
2001 SAAB 9-5
175,000 MILES

I have a 2001 Saab 9-5 SE (6 Cyl Turbo). When I have driven the car for about 30 minutes and the engine heats up my auto transmission slips from a stop in low gear in a loud manner. The car performs normally when cold/cool - as in the morning after sitting for hours. This occurred in Jan. 2011, was advised to replace the trans. - Got a used one which worked until Sept. 2011, then the same problem occurred. Now I am having yet another one put in, however am thinking there may be a causative factor ie: transmission cooling or electrical failure that keeps ruining or causing the slipping. IN other words, the problem may not go away. Any suggestions?

1 Reply

MHPAUTOS

MECHANIC
31,938 POSTS

You should always replace any external transmission oil cooler when replacing a transmission, even if it is only part blocked and appears to have good flow, you can still have problems, I would get a new cooler fitted with the trans, also second hand trans always run the risk of problems, you just do not know the history of the unit.