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87 chev 1/2 ton silverado 305v8 throttle body fuel injected 27000 actual miles runs fine in winter but first sign of warmup starts dying at all traffic lights. I have replaced the oxygen sensor,tune up and no change. can you help?

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  • christoph535 May 11, 2010

    carpenterjim: based on what you have described, this sounds like something is overheating.

    What was replaced when you had the tune-up?

    Do you have any leaks?

    Are all you fluid levels topped off?

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No Distributor pulses
is what code 12 is.

Posted on Jun 02, 2009

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