Car does not want to start when it rains

2000 BUICK CENTURY
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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THERESA COMBS
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Our car does not want to start when it is raining or there is moisture in the air. It sounds to me like it even backfires a little. It turns but will not start.
Jan 3, 2015 at 7:35 AM
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HMAC300
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Check coils and new plug wires.
Jan 3, 2015 at 8:24 AM
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GNDCABCO
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I am also having this issue. I replaced coil packs, changed plug wires, air filter,and had it in for a tune up. Dry everywhere under good cannot figure it out. But, same deal damp out will not start.
May 14, 2018 at 9:31 PM
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STRAILER
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To me it sounds like the engine coolant temperature sensor is shorting when the engine is cold. Here is a guide to help you see what you are in for where doing the job:

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Here is the location for your car. Check out the diagrams (below). Please let us know what you find.

Cheers, Ken
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May 17, 2018 at 11:21 AM