when i drive my car in the rain it will stumble or die, same when i hit water puddles. any idea whats getting wet and causing this?

98 Trans am/auto just bought it a month ago, bone stock with 9x,xxx miles

 

Sounds like you got some exposed wires under the car, only way to find out is to jack the car up , crawl around and inspect.

 

Water on the MAF can cause this. I had a supercharger kit with a relocated MAF on my car and it did the same thing. If your car has one of those cold air kits with the scoop or a Ram Air hood with the baffles out it could be the same thing.

-Geoff

 

no ive got a stock hood, no ram air, and stock air box.

 

What this guy said

 

Optispark coil is cracked or coil wire insulation failure.
Possibly(remote) optispark cap is cracked.

Rob

 

this isnt the car in my sig. this is my other car, 98 ls1 trans am bone stock

 

Did you crawl under there yet?

 

no not yet, wifey has been driving it to work in the morning and then i work nights so havent had a chance to yet. trying to get her to take the other car but the weather is so nice and she loves the T-tops so she has to take it lol.

 

I would say the Opti Spark cap is cracked. Have had the exact same problem with other distributer caps in the past, my Opti hasn't acted up yet. You can try WD40 when it is acting up as it will repell the water (that was the old school way). Not sure how the Opti Spark will handle that though. I hear they are pretty touchy.

 

He's got a 98 T/A, which has the LS1 engine which means no opti.

 

Sounds like my car....It was a wet MAF...looked dry to the naked eye, all it takes is just a little moisture. Unplugged the MAF and it ran fine.