Hi, my car was running fine when I parked it. Two weeks later it fires up and dies. Gives a code 66 "MAF circuit below minimum voltage". I replaced the MAF sensor and now I get code 56 "MAF circuit above maximum voltage". I've spent twenty years and countless hours building this car and even though I don't really know what I'm doing, I'm the only one to ever lay a wrench on it. If someone could point me in the right direction I'd really appreciate it. The sun is shining and the velle is stuck in the garage. Summers are short in Alaska and I need to get this figured out.

Did you call Massflo?

Not much help there. They told me that someone would call me back. Still waiting...

I'd go to a Ford website since that is an old Ford EECIV computer.

Really, that's all I'm gonna get? "Go ask someone else" Thanks for taking the time to tell me that.

Really, that's all I'm gonna get? "Go ask someone else" Thanks for taking the time to tell me that.


Can always tell it's a new guy just by what they say :sad:

Really, that's all I'm gonna get? "Go ask someone else" Thanks for taking the time to tell me that.
You have a Ford ECU, this is a GM website.

Ford parts in a chevelle :sad:
Can you hook a pc to your ecu and read MAF voltage or any way of viewing data??

Talked to Chris from Massflo. Tracked it down to a bad frequency convertor. A small wiring harness that lets the Ford ecu read the Gm MAF sensor. I'd have never figured that one out!