I was driving home from work a couple days ago and all of a sudden my car bogged way down and almost felt like a belt broke. Check engine light came on immediately and car went into limp mode. After getting the car back to the house for diagnosis, I realized I wasn't able to establish connection with the ECU from the OBD port. Thinking it was just my scanner, I called up a buddy to bring his high end scanner and try it. Same thing, no communication with ECU. I have checked all fuses and nothing is blown. I have also checked my alternator bolts and all are still good and tight. 2 days before this happened, the hose on my transmission return line blew off because someone didn't reinstall a clamp after a repair. I have tried everything I know to do and was wondering if someone had some other steps for me to try before purchasing a new ECU. Could this be a sensor causing a short? My belt was squeaking right before it happened and noticed it seemed to be coming from the A/C compressor. If the compressor has a short could this cause something like this to happen? Any help would be greatly appreciated, as I am stuck and this is my daily driver. The car will start and run, but seems to be very rich. I've check the timing belt and everything seems to be fine.

 

did you ever find out what it was?