My tranny is leaking fluid somewhere on the pass side of the tranny. It only does it when it gets hot. I did have a small fire on the exhaust pipe from this the other day so I would like to get this fixed. I think it is either leaking from the vaccume modulator or the tranny cooler lines. I am going to replace the modulator, and cooler lines and see if that fixes it. Is there anything else on that side/area anyone can think of that could be leaking. I would like to get this fixed on the first try so I won't have to deal with anymore fires. When I do replace the modulator is there anything I need to do? Or just pull the clip off, slide old one out and slide new one in? Also does anyone know the size of cooler lines on the side of a TH400 to save me a little guessing when I buy new lines. Thanks! BTW- it is on a TH400/203 in an 88K5 if it matters.