Mechanics

CHEVROLET S-10 ENGINE PROBLEM

2000 Chevrolet S-10 • 15,600 miles

I have an s10 with a 4cyl 2.2l engine. I Got off work and was cold so I revved the engine and it started shaking and I lost alot of power. I changed plugs and wires and all the things for a misfire. Then found out the code wasnt misfire it was 0200 fuel injection circuit malfunction. So I started by getting a noid light. Injectors 1 and 2 were good, 3 didnt come on at all, and 4 stayed on but got brighter rhythmically. So I checked the wires from fuel injector connectors to the pcm for resistance and they were good.I checked for voltage in the injector connectors with key on engine off and didn't get any voltage. But I did check it for ground and it was present. Someone said something about my power and ground at my pcm but wasnt sure how to test them two. Electricaljust isnt my strong suit. I appreciate the help.
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Guest
October 25, 2012.



There must be voltage there if it runs.

There is 12 volts key on power to all injectors. The other wires are grounded by the pcm.

There may be a pcm failure but get it confirmed before spending any money.

Roy

ASEMaster6371
Oct 25, 2012.