Originally Posted by kaidotech

Yes, my truck is MAF and no it is not running lean, it is actually running quite rich with advanced timing. The engine's internal's have been built, bored .30 over, new pistons, new cam, etc - so the "old girl" wasn't begging to slow down :P She's seen 120mph. Also, yes I can buy an OBD1 sensor, I already ordered it. The "Equus Innova 3145 OBD-1 Ford Scan Tool". The O2 sensors probably do need to be replaced, thanks for the tip on that. Im not sure if they have EVER been replaced, and my truck has close to 240,000 miles.