GMC Safari 2000 won't start after rain, damp, moisture
GMC Safari 2000 won't start after rain or damp weather. If it does start, it will run for few km and die. It won't start again until few minutes go by, and then will go on only for another few km. When I opened the engine compartment from inside the car, i noticed sparks / arching between the coil (i believe it's called ignition coil - closer to passangers side) and the wire which is running to the coil from the distruvution cap. With the car running, as i pressed the gas peddal more, it would spark more. To get home i taped the coil in the area where it would arch with elextrical tape, and was able to make it home - only with one more stop, however i could still see the spark jumping once in a while. Wondering if it's a bad coil (replaced a year ago), bad wires (Bosch - i know GM cars like their ACDelco parks) or something else all together. It seems to be a common issue with these GMC Safari's - however i wasn't able to Google the correct solution for this yet. The van drives OK when it's dry outside. Any input would be appreciated.Thanks, Dominik
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Rain should not affect your car starting. It sounds as if your battery is failing. Put your headlights on and get someone to turn the key with you looking at the headlights. If they dim to a glow-worm, your battery is not powerful enough. Sometimes a cell will fail and although your get 12 volts, you don't get enough cranking amps.
Regarding starting in damp weather, you can try this. Spray all the ignition leads with WD40 and also the inside and outside of the distributor cap. You can also try this which worked for me on an old Datsun that didn't like damp weather. Get some broadsheet newspapers and tape them together to make one large cover for the engine compartment. Make is about 10 sheets thick. Run the vehicle with this all over the winter. When you drive the paper warms and keeps the leads warm. When you park, any moisture in the air goes into the paper and doesn't condense on the ignition system. Make sure the paper is away from moving part like the radiator fan and the exhaust manifold. Check it after your first short drive, it should stay in place.
you don`t say but it sounds like the moisture from the rain is sitting on the plug wires causing them to short the voltage to ground and possibly moisture in the distributor cap.how long has it been since a tune-up was done to the van.
it could possibly be defection ignition coil or ignition wires arching when the weather is damp outside. Remove the doghose and while the engine is running, spray the ignition wires and coils and see if you can hear or see the arching wires.
I have a 2002 Safari with around 220k miles. I went out of town for several days and when I came back it would not start. I eventually got it started after about an hour. This happened again when I did not driver it for a week. This time I could not start the van. The fuel pump was spinning and it was getting gas. I took off the engine couling inside the van and inspected the rotor and cap. They were completely corroded. I put in an after market set for less than 30 bucks and the van started right up. I plan on getting the wires and plugs replaced but I don't think I want to do that myself due to tight access. Good luck.
perhaps you need a new cap and roter a new spark plug wire set. they don;t like moisture. also check to see if you have any broken or leaking vacuum hoses. the worse case senerio would be that your head gasket is leaking--at cold temps a little antifreeze will enter until everything warms up and it seals shut due to metal expanding. but since you say it's cold weather only--this probably wou;dn't be the case. good luck.