89 s10 runs terrible

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06-12-2005, 11:06 AM

outthedoor

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Join Date: Jun 2005

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89 s10 runs terrible

starts runs fine but after a couple of minuetes check engine light comes on and it runs poor. like popping/backfire and stalling. can see gas flowing from injectors so i dont think its a feul problem. i also dont get any error codes.

06-12-2005, 06:56 PM

chevylane2003

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RE: 89 s10 runs terrible

If the light comes on there is a code.

06-12-2005, 09:32 PM

outthedoor

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Join Date: Jun 2005

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RE: 89 s10 runs terrible

ok there is acode. its 12 whitch from the book mean all normal. i 'm confused

06-13-2005, 12:45 PM

LoLoS10Blazer87

Join Date: Mar 2005

Location: Dunn, NC (East Coast representin')

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RE: 89 s10 runs terrible

12 just pretty much means everything's working. If I stick the key in mine it just flashes 12 12 12 12 12. If your check engine light comes on, there should be another code.

Could be a spark problem, make sure your plugs, wires, cap, and rotor are good. Might also could check fuel filter.