2000 Taurus 3.0, went through heater core flush nightmare 2x and assuming the vice grips weren't allowing bypass, got my heat up to moderate from very low - it's still not going to handle the winter coming. I notice that the AC is on with the heat, and the coolant lines to the ac compressor are cold and the compressor is running. ??? Should I just pull the AC fuse for the winter?
Trying to get the mileage up since I bought it two weeks back, I've replaced the air filter, plugs, checked wires for sparks, checked the coil resistances against a new one (same), cleaned the MAF, shot the throttle plate and plenum, cleaned the oil system and changed to Mobil1 synthetic, put seafoam in the tank...and although it's gone up to 22mpg, there is still a vibration mostly under accelleration like a cylinder misfiring slightly from 45mph and up, worse the faster I'm going. Could it still be the coil, even though it checks out electrically? It was worse before the repairs, so it's definitely engine related.
I'm afraid I'm facing a leakdown test if I don't figure this one out.
It's turning into a money pit even with ME doing the work!