Question about 1990 GMC C1500

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94 chevy pick up 1500 5.7. Starts and stalls with the 5v bypass timing pluged in. Have changed distributercoilignition module and computer and prom.

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csmock132
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SOURCE: barely runs , timing retarded , only runs when est bypassed

You have set the timing to zero right? Then after you hook the bypass back up what does the timing go to?

Posted on May 24, 2009

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