One problem related to ignition module has been reported for the 2008 Dodge Avenger. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Dodge Avenger based on all problems reported for the 2008 Avenger.
Vehicle stalls at traffic lights or in stopped traffic in wet weather. Mostly wet weather, but has occurred at least tree times in dry weather. Local good year ran a "wet test" on it, could not reproduce the stall. When this happens I put it in park, turn off the ignition, put on my hazards, and it starts back up with no problem. Mechanic cannot find the source. This is scary at the least and makes me nervous even thinking about having to drive when it is wet outside. I read a mention of a wiper motor. . That it may either be poorly grounded or is failing and drawing excessive current. , he relates the stalling in wet weather to this as the wipers would either be on or in the delay setting. Any other circuits sharing the same ground circuit will get a reverse polarity voltage burst every time the wipers sweep, it seems that when it is on delay the sudden high resistance of the ground path knocks off voltage sensitive modules and things stop working for a moment, if you are off the gas, the engine just may stall out. He suggests checking the grounds, clean and tighten them. I have no idea if this could be the situation or not. I can give this information to my mechanic, but I do not want to go in with a guessing a game and hit or miss, that could get expensive. This has been happening on and off for about 6 months now, approx. . 95k miles.