As long as proper procedures are followed, (meaning don't have the host car's engine running while you crank the parasite car) then you shouldn't need to pull the tranny fuse in the first place. Walt Tampa, FL -----Original Message----- From: dmc12@xxxx <dmc12@xxxx> <snip> >I have heard of many people taking out the auto trany fuse if they >are jumpstarting the car. Is it then OK to replace the fuse once the >car has started? & is running? <snip>