mkent

A little background:
I cleaned up my stock opti and put the rotor on a couple weeks ago. I had checked the fuel pressure before reinstalling the opti and it read 43# and held steady. The car ran well for about 4 miles and then when I mashed it to the floor and hit 6000rpm the engine died. I found a blown Ignition fuse. And I also found oil in the opti due to bad o-rings. I replaced the fuse and replaced the opti with a new MSD unit and replaced the coil. Put the car back together and now it still will not start, but I have NO FUEL PRESSURE. zero pounds on the guage and the fuel pump can not be heard running when I turn the key forward.
When the ignition fuse shorted, is it possible something else did too? Does anyone know what the fuel pump is tied into? I do not see a "fuel pump" fuse.

Cerwin Vega Fan

Check the fuel pump relay.

mkent

where is that?

Cerwin Vega Fan

Should be under the hood with the other relays, if not check the fuse panel.

Mtrhds94Z

From shoebox' site:
http://shbox.com/1/fuel_pump_relay.jpg

mkent

Okay, I got it out but do not know how to tell if it is bad or not. Anyone know how to diagnose a bad relay? Also, is this something I will have to order through GM?

seawolf06

Or just use one of the other relays in it's place, like the AIR relay since that won't do anything but maybe throw a code.

Cerwin Vega Fan

Nope, any auto parts store should sell the relay.

seawolf06

radio shack

mkent

That's not going to work since none of them are the same part number as the fuel pump relay.

Dave89IROC

AIR pump relay will work, no problem, it is wired the same, just won't clip to the plug

mkent

So if it won't clip to the plug, then how do I hook it up to see if it works? I find myself rather intimidated by electronics all the time.

I have an ohm meter, but can not find my test light. There are 6 wires which go to the fuel pump relay (green, black, grey yellow, red and orange).
Obviously black is ground. The grey is ground. I assume orange is prime, yellow is car running, and have no idea what green would be. What do I need to check with my ohm meter?

mkent

Okay, I have eliminated the possibility of the fuel pump relay being the problem.
What else can cause the fuel pump to not work at all?

mkent

Oh, and I have no spark! No spark and no fuel.
Could be the Pass-Key theft system....any other possibilities?

seawolf06

If it's the VATS, your security light should be on, unless for some reason it's burnt out. That would definitely explain no fuel and no spark.