Question about Chevrolet K2500

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1997 K2500 with 105000 miles. 4x4. 5.7L Vortec engine. While driving it would stall unexpectedly. Could restart immediately. But most often have to wait 30 to 45 min. in order to restart and run. Some other times, it would simply not start. Cranks fast and easy. No starter issue. No alternator issue. The gas tank is new. The fuel pump is new as of today and working perfect. There is pressure in the fuel line. when it works, there is no issue what so ever.Engine runs smooth and strong. No check engine light comes on evereven before it quits. I noticed that when it will not start, the high beam indicator light comes on when the key is turned on completely[just like all other warning lights]. Usually, it does not light on when starting the truck. It may provide you with a clue...? Thanks for any help, Pierre in Ottawa, Ontario, Canada.

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  • Ti Loup Sep 13, 2009

    The coil is new, the spark plugs are new, the wires are new, the distributor cap is new. How do I check the pulse?

  • Ti Loup Sep 13, 2009

    did not get an answer back to my reply.

  • Ti Loup Sep 13, 2009

    I beleive your answer to be right. thanks for the details, as it does help me a lot. Pierre

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You will probably find that when this happens it is not getting fire to the plugs. With this many miles on it, it is probably the ignition control module in the bottom of the distributor. Pull the cap off and remove the rotor you will see a black half C shaped module mounted in the bottom of the distributor with two bolts and has two plugins on it, remove this and have it tested a couple of times until it gets hot and it will probably fail. This is a common problem and not very expensive to fix.

Posted on Sep 13, 2009

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  • Master
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With out seeing the truck......
I would want to check for a fuel injector pulse when the truck has stopped.
I would also want to check for spark at the plugs/coil.

The cooling off/waiting time to restart has me thinking........#1 the coil, #2 the ignition module, #3 non vented gas tank.(removing fuel causing a vacuum which stops fuel flow)......but this is not likely.

Hope this helps.....from Edwards Ont Canada.....10 mins south of Ottawa.


Posted on Sep 12, 2009

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