2005 Impala LS 3.8
115,000 miles
Yesterday after stopping at a store the car would not start for my wife. I told her to wait for a few minutes and try again,...no luck. Called AAA, an hour later he arrived and the car started and ran fine. No codes at this time.
This morning I started it and it idled normally for about 5 minutes then started misfiring and died. I started it again and it would run as long as I kept it at 2000rpm with intermittent misses. It finally shot the codes, p0350 and p1350. I bought the three new coils and installed but this did not solve the problem. I then suspected the ignition control module but was reluctant to buy another $150 part without knowing for sure, so I played around a bit. I discovered that when I unplug the MAF sensor the car runs perfectly fine and when I plug it back in it goes back to the same problem.
Can anyone enlighten me to what might be the true source of the problem?
Thank You!