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  1. #1

    Default v6 problem ~ Won't Start in Damp Weather - 1999 Chevy Silverado 4WD

    1999 Silverado v6 4x4 will not start in damp rainy weather. any ideals how to fix the problem, thanks

  2. #2

    Default

    Have you checked your air filter? Maybe your filter is clogged/wet and is suffocating the motor? Will the motor turn over if you turn the key?

  3. #3

    Default

    I had already disconnected the air filter, no luck with that. engine turns over good.

  4. #4

    Default

    Have you checked your fuel pressure? It sounds like a fuel issue. That or one of the sensors on the intake side may not be reading right in damp conditions.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

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  5. #5

    Default

    Maybe you have some ignition wire problems, give those a check out.

    2013 Silverado LTZ White Diamond Crew Cab


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  6. #6
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    Default

    remove the distributor cap check the rotor / cap for water. wires on the v6 need to be routed as OEM built or you get these type problems.

  7. #7

    Default

    Quote Originally Posted by j cat View Post
    remove the distributor cap check the rotor / cap for water. wires on the v6 need to be routed as OEM built or you get these type problems.
    x2 on checking the cap and rotor. I had a truck in a week or so ago that had the same issue. He had taken it to multiple shops and a dealer. No one could figure it out. I talked him into letting me throw a cap, rotor, and wires on it. Problem solved. You can always pop the hood in a dark garage and spray the wires down with water. Look for arcing.

    1995 Silverado 4x4
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    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
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  9. #8
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    Default

    Quote Originally Posted by Pikey View Post
    x2 on checking the cap and rotor. I had a truck in a week or so ago that had the same issue. He had taken it to multiple shops and a dealer. No one could figure it out. I talked him into letting me throw a cap, rotor, and wires on it. Problem solved. You can always pop the hood in a dark garage and spray the wires down with water. Look for arcing.
    being the v6 engine this is the one where the ac lines drip condensation on the rotor cap ?

    if so these lines need be wrapped with tubing insulation to prevent this driping on distributor.

  10. #9

    Default

    Does it crank? I had that issue about 5 years ago and it ended up being my started. There was this little rubber piece on the bottom that was gone. It allowed moisture in the starter making it not crank. May be something to look into.
    -K&N Air Filter


  11. #10

    Default

    Quote Originally Posted by j cat View Post
    remove the distributor cap check the rotor / cap for water. wires on the v6 need to be routed as OEM built or you get these type problems.
    I don't believe the NBS has a distributor cap. I thought GM went to distributorless ignition on the Silverado starting in 1999.

    2013 Silverado LTZ White Diamond Crew Cab


    Mods:
    Advent OGM1 Navigation
    Husky Liners GearBox Underseat Storage
    Airaid MIT
    EGR Rail Caps
    K&N Air Filter
    Flowsound 40 Muffler
    Hypertech Max Energy Tune (only top end limiter removed and AFM disabled)
    Chrome Tailgate Handle Cover
    TonnoPro HF-155 Tonneau Cover
    WeatherTech Front and Rear Splash Guards
    Husky Liners X-Act Contour Floor Liners
    WeatherTech Side Window Deflectors

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