Changed pump relay changed pump changed filter . turns over but wont start
I was going to suggest checking for spark but I guess you found it. The computer checks for a reference pulse from the ignition module before allowing the fuel system to start or continue injecting fuel into the cylinders.
SOURCE: 1997 Chevrolet Silverado Fuel System
Hello Johnholley
I am wondering do you hear the fuel pump when you just turn the key into the on run position not crank just in run and listen and see if you hear the fuel pump run for a second, If you don't hear it you will want to check for power at the fuel tank, and have some one cycle the key while your under the truck with a test light. Hopefully you have power and you hear the fuel pump run. Now if you do hear the fuel pump running then the next thing you will want to check is for spark, It could be the ignition module or pickup coil. check out those thing and I am sure you will be able to figure out whats going on. If you don't get back to me and we can try a few other methods. I sure hope that helps you out johnholley. and thanks for using Fix Ya Bear001
SOURCE: 1999 Chevy C3500 with a 5.7L SFI wont start
a crank position sensor could be bad or your cam position sensor could be bad
SOURCE: 1996 chevy tahoe fuel system
i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
SOURCE: 1994 S10 Blazer Fuel Issues?
YOU SHOULD INSTALL ORIGINAL GM PART AND NOT AFTER MARKET. I INSTALLED 2 AFTER MARKET PUMPS THEY WORKED FOR A WHILE THEN STOPPED. THE PROBLEM WAS NOT ENOUGH PRESSURE, SINCE I INSTALLED GM PART NO PROBLEM.......
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i fixed it ! it was the ignitition module also had a bad connection on my ECT sensor
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