I have a 2001 Nissan Frontier SE Crew Cab 4x4. Whenever I drive in heavy rain the truck feels as though its going to stall after about 10-15 minutes of driving.
Acceleration is very weak and stuttery, and the check engine light starts to flash! Not just illuminate and stay lit but actually flash! I always reach my destination but I have to drive in in the slow lane with my hazard lights going because acceleration is very weak!
If I leave the truck over night, all operations return to normal. Only 1 time did the check engine light stay on, so I took it to a mechanic and the diagnosis after hooking it up to their computer was “Cylinder 6 Misfire”. There was non of the other behavior that I mentioned available so I drove it home. While driving home, the check engine light went off and everything seemed fine, until the next heavy rain!
I was wondering how could I get the truck to misbehave without waiting until a heavy rain! I happen to take the truck to one of those high pressure hose water car washes.
Sure enough, when the high pressure nozzles went across the grill, the check engine light came on after the 2nd pass and the truck felt as though it was going to stall! Voila!
After the wash, I attempted to drive it to the mechanics shop, but while on the way, symptoms gradually improved and the check engine light went off! So something is getting wet and causing the issues! After everything dries out the truck is fine. Can you guys tell me what is getting wet and causing the strange behavior!??? Its obviously something in the front near or behind the radiator