1991 Camry 3SFE 4cyl auto - Eng. Stalls after rain

[DickE]

New to forum.
For last 2-3 years car stalls after heavy rain, when parked.
150,000 miles
Acts like a fuel or moisture problem
Runs fine after engine is warmed up. May take a few a miles.

Have checked plugs, wires, rotor.
Have put dry gas in gas which appears to help.

Currently car is running fine as we are having a heat wave on east coast with little rain.

Every time I take it to dealer, by the time I get the problem clears up!

Any sensors or other equipment subject to moisture problem?

Anyone having similar problem?

Thanks
DickE

[DFBonnett]

Originally Posted by DickE

Have checked plugs, wires, rotor.

How did you check them? With the car running, and in darkness, try misting the cap and wires with a spray bottle filled with water. Look for spark arcing or a change in engine RPM or operation.