I just had my tranny rebuilt at a tranny shop(ruffner transmission, san diego) and when i got my van back, the idle continued to jump up and down from 1k rpm to 2k rpm. The mechanic thinks it isnt related to the work he did but it sure wasnt like that when i took it to him. they tranny was slipping when i brought it to him, thats all. oh yeah he said he had to replace all engine mounts cause they were broken. code read map circuit low voltage, i think it was p0108... not sure tho. have to check again. any ideas guys. should the mechanic be liable? im running on 198k miles.