Hi all -
Some of you have followed my intermittent/heat-related low-voltage problems here:
http://www.automotiveforums.com/vbul....php?t=1063344
After yet more research and testing, I've concluded I don't have a bad alternator.
However, one of the potential culprits behind this problem is the PCM (Powertrain Control Module, sometimes known as the ECM Engine Control Module; basically, the computer that controls the engine and some other related functions).
While I have not yet confirmed that the PCM itself is bad in my van - I did start doing some research on potential PCM replacement strategies. Some thoughts:
- I see tantalizingly cheap Windstar PCM's on eBay - but I also read warnings that PCM programming is required, both to make the PCM work with a specific vehicle, and to handle the embedded-chip ignition key security system. But the information I've seen is often vague and inconsistent. Can anyone confirm such issues from actual experience?
- I've seen on-line providers that claim they can remotely program a new PCM based on your vehicle's VIN, and other part numbers that are printed on the PCM itself (i.e., they mail it to you - so the vehicle isn't out of service for long). Has anyone used any of these services?
- Are there other DIY-able approaches out there?
Thanks in advance for any insights from the Windstar community!