1989 Taurus won't start

Compression?

Check all cylinders. Sounds like the walls may have been washed. How long has it been sitting?

Rob

I haven't checked the compression. I will as soon as I can lay hands on a compression gauge. (Walmart, here I come.) AFAIK, the car's been sitting about 4 months. What does "the walls may have been washed mean?" If you mean that gasoline has washed oil off the cylinder walls, wouldn't turning the motor over multiple times coat the walls enough to reseal?

Thanks, Dust>

Clear the codes and run the KOEO again. Also try spraying a good amount of carb cleaner in the throttle body and see if it will run. If it does its fuel. What is the fuel pressure supposed to be I wonder....?....40 doesn't sound high enough for your port injection. If it runs on the carb cleaner I would pull the fuel filter off and see if it plugged badly or just replace it. It would also wouldn't hurt to unplug the MAP and try it. (that will set the MAP code for sure remember, so do it after your KOEO test)

In morning, 1st hold pedal to floor while cranking... if it tends to start then - the things too rich, if it doesnt fire as it did before in AM, pump heck out of pedal, .. or try starting fluid

If it was only 4 months (unless it was like 110 where it was stored), it should still start but I would try to get as much fresh 87 oct gas in there as possible, then run the pump from the test connector to circulate it a few minutes..plus some drygas, then dont forget change filter

The codes, Map/Bap, especially - has nothing to do with engine temp Any trace of mouse chewing wires? Try unplugging harness connectors to the two sensors and plug back in...trace engine wire harness.. maybe not getting the 5 volt reference. Maybe the harness grounds to chassis near the ECM are bad.