Question about 1995 Chevrolet C1500

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Timing off, advancing 20' 95 GMC Sierra 350 cu.in.

1995 GMC Sierra P/U with a 350cu.in. Disconnected tan wire with black stripe, timing set at 0' BTC as soon as I reconnect the timing advances 20+ degrees and stays there, causing pinging, loss of power and terrible fuel milage. I've already replaced the knock sensor as well as the spark control, with no success. Any ideas would be greatly appreciated.

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  • chilly481 Feb 25, 2009

    my problem is I cant find that damn tan wire with black strip.

  • john roland Oct 09, 2013

    THE WIRE TAN AN BLACK ONE WIRE UNDER GLOVE BOX E S T I HOOK MINE UP IT RUUN LIKE SH HELL WHY????? CAN I DRIVE WITH WIRE DISCONECTED

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After connecting your wire try resetting your distributor or pull timing chain cover and ckeck timing marks on gears

Posted on Jan 25, 2009

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I plug in est the truck will not stay running I turn dist with wire plug in now it is 6 btc now it run now it starts ??? will this hurt engine I have been trying for ever to fix fuel pump fuel filter spark plug &wire dist cap moduule pick up coil evry think egr runs an stumble an die I check T P S

Posted on Oct 09, 2013

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