When I first start it up , I have to manually shift it up through the gears and it works fine. If I put it in drive and give it gas it just barely moves. If I put it in 1st, it takes off normally. I have a 94' Cougar with a J-Mod tranny, chip. After I have been on the road for awhile, it will shift normally most of the time. What could be the problem? I leaky valve body? I have 140,000 miles on that tranny.
Thanks
Thanks