1999 2.0 Jetta with approx. 80000 mi. sealed spark plug wires with electrical grease, and the distributor cap w/ scilicone. On wet, an rainy days car will start fine, run a mile or two then die without any warning, or indicator. Got car home, popped the hood with it running an sprayed down everything in the engine compartment with a water bottle, an it jus kept purrin like a kitten. Any insight would be mucho appreciated.

 

Check the distributor cap for cracks. A cracked distributor cap will cause the starting problem when it's wet out. Cracked insulation on wiring can do the same for turn signals.

 

replaced wires,plugs,rotor and distributor cap. then a coil pack. all were needed anyway. got into the ecu and noticed some evidence of moisture. cleaned up with a good electronic cleaner and sealed back up with a nice ring of diaelectric grease on the o-ring. she's running like a champ now. thanks

 

Sweet! Good job.