Hi, I have a '95 Thunderbird with the 4R70W automatic tranny. I am experiencing an interesting problem. The transmission will NOT go into any forward gear at low RPM's. When I put the car in drive, the only way that it will engage is if I get the engine RPM's high enough (around 4,000), and then it finally engages (NOT good for the tranny, I know). The car will grab reverse just fine, so I don't think it's a pump problem. Once I get it into gear, all gears pull strong with no slipping whatsoever, but when I come to a stop, it drops out of gear again. It also "neutrals" when doing a hard downshift out of overdrive. Since I have full pulling power in ALL gears once I get the car into drive, I don't think I have any clutch or band problems, but I may be wrong. I re-built this tranny about 40,000 miles ago and upgraded all the hard parts to the latest and greatest stuff, as well as installing a TransGo shift kit, and as long as I can keep it in gear, it shifts awesome. I think I have an accumulator or valve body problem, but I don't know what. I just pulled the pan and re-torqued the valve body to see if that would help, but it didn't. HELP PLEASE!!!!
I have been searching and searching and have found nothing that explains it!!!
please please please! if you find out can you please email me!!!???
I am hitting walls and ive never been stumped by any trans problem untill this one. help!!!!!