2001 Blazer 2dr, 4x4, Auto, 4.3 V6, w/148k:

1. We replaced the Fuel Pump, wired everything up properly, car will not start
2. We replaced the fuse's and relays car will not start
3. We spray a bunch of starter fluid it, and it fires up for a quick second and then dies.
4. We check fuel pressure, shows none.
5. We checked fuel lines and fuel filter on frame with air, no clogs
6. We take apart tank again, and make sure everything is hooked up properly with fuel pump, and it is. Still no luck.

Anyone have any solutions to my problem? Its been over a week of nights at my shop till 2am working on this thing soaked in gas.

Also does anybody have a wiring diagram for the car? That may help me out a little.

Thanks for all the help, look forward to getting this thing back on the road asap!

 

Do you hear the fuel pump running at all???? If not you need to check for both power and ground at the connector to the fuel pump, with the key on....

 

We definitely heard the fuel pump going, I wasn't at my shop while step 6 took place, but from what I remember I don't think it was possible to test the fuel pump with the tank down.

My mechanic buddy said I wiring diagram would help him out a ton. Anyone know where I can get one? Or if there is a simpler fix I would be glad to do it!

 

you have four wires plugging into the pump. Two grounds and two 'hot'. My bet is that you have what you need there and your issue is from there down. Check out the two grounds-you can do this without dropping the tank. Also check out the two 'hot' wires. One will have 12v for two seconds when you key it on-the other (gas gauge) will have 6v constant. Let us know. Jerry

 

A quick search for "fuel+pump+wiring" with an author of "swartlkk" will link to THIS THREAD at the bottom the first page.