1988 s10 blazer injector prob

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06-25-2009, 09:11 PM

JoeGibbSilverado

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1988 s10 blazer injector prob

My brother recently purchased a 88 s10 blazer with the 2.8, problem is, he gets gas to the injectors, but they wont spray, u can manually hotwire and ground the injector, and it will spray like crazy, checked the relays, and fuses, all good. any ideas? thanks

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06-25-2009, 09:56 PM

CODE4LS1

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May want to check the PCM.....may be a bad one.

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09-22-2009, 12:30 PM

01WS6/tamu

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Use a noid light to check for injector pulses. It is possible the ignition module quit, it sends a synch signal to the pcm that it has to see before it will enable the inector driver outputs.