Problem in wet weather

[1994]

I have a 94 talon it runs perfect when it's dry but as soon as it rains it looses all power coming to work tonite up a hill I had to stop it wouldn't go any farther my check engine light comes on and off when it happens and my wideband reads extremely rich
Any ideas on what would cause this to happen its been doing it for like 2 months now and with April showers I don't wanna deal with it anymore

 

[Insane20]

tune it up. often times on any car when the plug wires or coil get old they will start to let moisture in and it can create a miss. at least thats what i would start with.

 

[joescool2008]

+1 on bad spark plug wires.

 

[GSTurbo1]

bad wires and or connections to coil packs

 

[clipto]

Yea if your car is stock I would get ngk blue spark plug wires, ngk bpr6es gapped at.028. Check for boost leaks even stock system can get loose over time causing rich a/f's, also the stock ecu is very rich when boosting and especially up hill it takes more work on the car. I would also change the fuel filter and start from there. Also disconnect the battery for awhile and let the ecu reset. Check coolant level and oil level is good. Drive it and then see if it's better.

 

[Wild Bill]

wires x5

 

[buckshot888]

Plug Wires!!!!!