Hey all, my 2010 has been acting up lately. A while ago, my a/c stopped working intermittently, air just got hot and humid. I reset my APIM , and that solved it for a couple weeks. It's back to working about half the time. I checked codes though ForScan, and my PCM isn't receiving the required voltage, and multiple other modules lost communication with the PCM, including my APIM. I checked my battery and alternator, both are good. Bad PCM? What are your thoughts?
2010 Taurus SHO w/ stage 4 LMS T460
Sent from my iPhone using Tapatalk
do you have a list of codes? were all codes related to the same module or multiple modules? how did you check your battery/alternator? nowadays need a digital tester like the Solar BA9 to get an accurate idea of health. sometimes the alternator will send a DC ripple thru the battery and can affect multiple modules this way. this can be checked with a digital multimeter, no special equipment required.
sometimes there is a bad ground or bad fuse/relay in the mix. check anything in the BJB that controls power to the PCM. also pull the PCM connectors at the firewall, check for dirt/water/rust, clean / grease and reconnect. definitely had a case or two of bad PCMs on these SHOs (unrelated to bricking). and i THINK it was a 2010 as well.