Question about 1999 Chevrolet Silverado 1500

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Hi guys, I have a 98 chev silverado 5.7 vortec. I've been struggling with misfire on wet days. The cap and wires were replaced twice to no avail. The engine light has been on for a while : latest code is crank/cam sensor. I also have water on my passenger side floormat after rain/wash. Wondering after reading some posts if something in the firewall is getting wet behind the dash. O2 sensors are fine, mass air flow is fine air filter housing is tight. New cat installed. Would crank sensor be a problem? or would the truck even run without it. Any help would be useful. Thanks from Ontario.

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The crank and cam sensors would be a huge problem - the car wouldn't work if the sensors were at absolute nonfucntion, but you'd have issues if the sensor's issues were intermittent.

Posted on May 07, 2011

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