Just replaced the fuel pump. My pressure is about 60 now but it does not hold there when the key is turned off. Is this a fuel regulator problem now? Thanks

 

You probably need to pull the plenum off and have a look inside.

 

i no this is a lil late but it could also be ur alt. i have alot of the same problems as u... i have put in 2 alts so far and i am goin to put a 3rd 1 in now... they all keep crapping the bed on me...