I have a weird problem with my 08 TB 4.2. It started over a year ago. Sometimes the car will not shut off properly. When you turn the ignition to shut it off, it will die slowly like it is running out of gas. When this happens, the CEL light will come on and stay on but will be slightly more dim than normal. If left overnight, the battery will die. Pulling the ECM fuse(29) will turn off the light and keep the battery from draining. The problem seems to happen most during weather changes, whenever it goes from cold to warm and vise versa. The only codes I have are related to the secondary air system. I need a new pump and valve. Anyone have any ideas? I have already replaced the ignition switch. Is my ECM going bad? Lately, the car has been shutting off normally sometimes and the CEL wil come on during the night and drain the battery.
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