1997 SS died on way to work.. Dont hear fuel pump prime when turning key, found #3 PCM BATT Fuse blown.. Replaced it and blew as soon as ignition was turned to on position.. Any thoughts?

 

You have to look at everything that is on the circuit and find out what's drawing excess current, shorted out, etc.. There's a list in your Owner's Manual that show what's on each fuse. If you don't have a Manual, Shoebox has a link to them online:

http://shbox.com/pdf/manuals.html

 

thanks Fred.. Down loaded the manual. says: Powertrain Control Module
(PCM), Fuel Pump Relay are controlled by fuse. I replaced the Fuel Pump Relay and blows fuse. When the fuel pump relay is removed does blow.. Is this pointing to the fuel pump?

 

Is that what you meant to type?

 

whoops.. I mean to say when I take the fuel pump relay out the fuse does NOT blow.. Thanks.. Sean

 

Seems like either the relay is shorting or there is something causing the fuel pump circuit to draw excessive amps. Could be anything from the relay to the pump, or the pump itself. Could be a short in the wiring harness from the relay to the pump.

 

found the short.. hard to believe it didnt blow up.. Maybe good thing I had a full tank.. Time to research fuel pumps.. Thanks for your input..

 

Be thankful the fuse blew......

 

Yea I see that.. Glad I didnt opt for the bigger fuse to see what would happen.. The wires to the pump got so hot the insulation melted of the wire and melded them together..

 

Putting in a bigger fuse to "see what happens" is always inviting bigger problems.

Glad to see you found the problem and it didn't turn into a bigger mess.

 

Wow...I thanked God for you bro.