Joined
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3 Posts
bare with me please, not used to asking for help. ok, had a 98 firebird with a 3.8 liter v6 and a 4l60e automatic transmission. keys got stolen and my bad temper screwed up the steering column trying to bypass it. that and since the car had a few problems with the body and i owned another 98 firebird that i bought with no motor or tranny i decided to swap them. after the swap my transmission just slipped. wouldnt even move my car. bought a new tranny, same thing. read somewhere about shims so added 3 - .025 shims to the flexplate. now it moves, although it still slips and takes some rpms to get going. but it vibrates excessively. I don't understand because it worked great in my other firebird. any places i should examine? ideas? some noteworthy things to add is on the new install my dad replaced the transmission cooler lines with hoses, and i checked the fluid level, its full. also i replaced rear main seal while i had the engine out.... please help