1998 Chevrolet Blazer Won't Start

1998 CHEVROLET TRAILBLAZER

C1971

MEMBER
4 POSTS

I have a 1998 s-10 Blazer that runs great. But sometimes after I shut it off, it will not start. When it does this the fuel pump will not run. There is spark and so forth. If you rock the key a couple of times then the fuel pump will run and you can start the engine. The Blazer will not give a code, has been hooked up to a hand held scanner and a Snap On scanner, All systems pass including fuel pump pressure. I've dropped the tank ,inspected wires and plug ends, regulator also passed test. I am thinking that it may have a bad ignition switch. Please help, don't want to start thowing money at it.

Feb 22, 2007 at 8:28 AM

CHEVY22

✓Experienced Mechanic
1,375 POSTS

yup sounds like a switch , you can double check power at the pump , you should have power for 2 sec thats the prime, it sounds like you have done the right thing and checked the pump pressure

Feb 22, 2007 at 10:03 AM

Suggested Repair

Suspect a faulty ignition switch. Confirm the fuel pump gets power for the two-second prime when the key is turned on; if prime power is missing until the key is rocked, replace the ignition switch.

Conversation Summary

The owner of a 1998 Chevrolet S-10 Blazer reports an intermittent no-start after shutdown because the fuel pump does not run, although spark is present. Rocking the key restores pump operation and the engine starts. No codes were stored, and fuel pressure, wiring, connectors, and the regulator tested fine. The expert agrees it sounds like a bad ignition switch and suggests verifying two-second prime power at the pump.

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1998 Chevrolet Blazer Won't Start

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