Originally Posted by
smokey847
My dad took the car out yesterday to run some errands. About 15 minutes after he left, I got a call from him that the dreaded rough idle/limp power thing was happening again. Thankfully, he was able to slowly scoot to the local Chrysler dealership--I wanted to be sure and get the codes read while the symptom was present--I am so sick of the "we can't get the problem to recreate" bullshit.
Anyway, the service department was more than accommodating and were able to get the car right in to check. The service advisor told me that as soon as they plugged the computer in, the car died. They restarted it and it ran smoothly. "Great," I thought, but they were able to get readings. The car churned three codes:
P0410 -- Secondary Air Injection
P0562 -- Battery Volts Low
P0108 -- Map Sensor
Finally some clue as to what is actually going on! The dealer suggested first replacing the RCM, a cool $630 parts & labor. No thanks. I can do it myself for ~$200 and ten minutes out of my life. They also recommended the MAP sensor if the RCM does not correct the issue. Please give me your thoughts. I am going to move forward with one of these "fixes," but because of my limited knowledge of cars, I want to make sure my approach is logical. Thanks so much for all the help thus far.
I just bought a RCM ( K40 ) module off EBay for $35 including shipping, 5 minutes to put in the car and it works fine. Now I have a spare that I am going to replace the relays on.
Don't know the cost of a MAP sensor, but I do know that too is a 5 min job to replace.
NOTE: the 2 screws that mount it to the plastic intake are really weird 5 point Torx security screws, easiest to remove if you just take the plastic piece off and use some small vise grips or whatever to remove them. I replaced mine with SS hex screws, same thread and length.
WITH THE BATTERY LOW VOLTAGE CODE, THAT IS WHERE I WOULD START.
NEW BATTERY ! NEW BATTERY ! NEW BATTERY !