92 chevy 5.0 tbi intermittant no-start

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soll2sun - 27 Apr 2005 22:54 GMT

no fuel at injectors and no spark while cranking engine. fuel pump runs
before start with switch turned on. with spark tester connected, visible
spark and fuel from injectors when start occurs. no spark or fuel visible
when no-start occurs. what component would stop both spark and fuel
injectors intermittantly? ignition module tests good. runs perfectly after
successful start, but dies intermittantly/restarts intermittantly. help me
please!

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Shep - 27 Apr 2005 23:13 GMT

Could be a broken wire at the pick up in the dist or a bad pick up, or the
module is actually bad, or bad connections at the pcm or a bad pcm. You see
where this going, when it won't start a scanner would tell if the pcm sees
cranking rpms, if not , it is usually a distr. related problem, or the
harness to the pcm also.

> no fuel at injectors and no spark while cranking engine. fuel pump runs
> before start with switch turned on. with spark tester connected, visible
[quoted text clipped - 3 lines]
> successful start, but dies intermittantly/restarts intermittantly. help me
> please!

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soll2sun - 28 Apr 2005 01:31 GMT

thank you, Shep. you told me just what I was afraid you'd say. chasing
sparks is a nightmare, taking it to the chevy dealer is bucks I don't
have. I'll go ahead and replace the pickup, it's only $10 and I can look
around in the distributor some more. Thanks again

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soll2sun - 29 Apr 2005 17:47 GMT

replaced ignition module, problem fixed. NOTE: old ignition module tested
good three times. obviously, ignition module problem can be intermittant.
fuel injectors will not fire if ignition is not working. lesson learned.

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