Hi -
92 F150 5.0. Running like dogmeat, had been flashing Check Engine then Check Engine came on stable and now does not come on at all EXCEPT when I go to pull codes, then I get no codes, just a constant check enging light in KOEO test mode. I'm assuming that this is a bad ECM (eec-iv) but can not find documentation that makes me 100% confident in my theory. Truck still runs, just like dogmeat. Any help or input out there? Thanks in advance!!! D.P.