Question about 1999 Chevrolet Silverado 1500

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1999 silverado 1500 4.3 vortec skips and misses

This usually happens after the truck has warmed up. the fuel filter, plug wires, ignition coil, and one O2 sensor have been recently replaced. dumped sea foam gas treatment into a full tank of gas so it isn't moisture. i know i have a bad fuel level sensor but it has been bad for 18 months so i don't think it's related.

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  • Barry N Melissa Spring
    Barry N Melissa Spring Jan 05, 2009

    Same problem. I replaced the distributor cap, rotor and fuel filter. Any other thoughts? Now it won't even start. When I turn the ignition on, I can hear the the fuel pump in the tank. Tank is half full.
    Mine is an '04 Silverado 4.3

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Insid e the manifold their is a part that is called a spider have a proffesional fix part and labor are expensive

Posted on Feb 10, 2009

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Start the truck, open the hood, find your ignition coil. There is a two or three wire connector that clips into the coil. Wiggle or lift up on the wires. If your engine shuts down, there's your problem. Replace the connector.

Posted on Feb 09, 2009

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No, not related. If it has a distributor, look inside the cap and check the rotor.

Posted on Dec 22, 2008

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Code 172 and 175 are O2 sensors reading rich.
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Based on that info, I would reason the fuel pressure regulator has failed, or the return line to the tank is plugged.
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I have a 2006 Freestar with a 3.9 Engine . When it is cold it has a miss when i step on it. But it gets better when it starts to warm up. Almost seems like a spark plug miss


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O2 Sensors--change at 100,000 miles (front 2 only)
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Air Filter ---every 3 years/blow off once every year
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1 Answer

Wont start


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