CRANK NO START

1995 GMC Sonoma

Tiny

wrenching4God

September, 17, 2010 AT 5:51 PM

Electrical problem
1995 GMC Sonoma 4 cyl Two Wheel Drive Automatic 122000 miles

If someone could help me while chasing my tail - that would be awesome!

Here's what I have

95 Sonoma 4.3 TBI Crank No Start -

replaced, fuel pump, sending unit, both injectors, ignition coil, spark module, pick up coil, ecu - no change @ all

I am thnking electrical at this point when I checked coil both sides had power coming from it. I think at this point being overwhelmed annoyed whatever has me running in circles -

any suggestions, solutions would be great

thanks!

FOUND 51583 RELATED QUESTIONS

2 Answers

Tiny

rasmataz

September, 18, 2010 AT 12:11 AM

Cranks but no start condition-do below: Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

Tiny

wrenching4God

September, 18, 2010 AT 8:01 AM

Thank you for response !

Injectors do not pulse, there is no spark, there are no codes, ecu is Good, and replaced numerous other components, I feel like I am over looking something very small. Looking @ ignition switch now, and behind the cluster and pointers would be great.

Thank you again

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