Air Conditioning - On all the time w/ defrost?
OK, all you auto wizards. Have an '03 Dakota 4x4 QC Sport, 4.7L-V8, AT, A/C, PS, PW, Cruise, etc..
Gas mileage seems to have dropped quite a bit. Had a brake issue - replaced rotors & pads on the front end last weekend, great now, assume no dragging brake.
Every time I turn on the Defrost vent or Def./Floor vent, I seem to get pretty cold air thru the Defrost vents. Yet when I turn on the floor or dashboard vents, all OK, normal outside in air flow, and according temperature (ie. not cold in summer).
Every time I park the truck in the driveway in summer, without using A/C, it also drips like a son of a gun for a short while - hear it kind of "hissing, or steaming" onto something in the rt. rear (pass. side) of the engine compartment, and water all over the driveway or road. Am assuming that the A/C is ON/running (even without it turned on), and this may be the condensor condensation (unintended pun) dripping onto either the manifold or the exhaust pipe out at rear of the engine.
Any thoughts folks ??? I'm sure I'm taking a hit in mileage due to this being ON all the time. Also have heard a bit re. replacing "resistor packs" under the dash on the passenger's side in the cab.
Please - can all you t-shooters lend me some advice or resources to look into ? Ever heard of this type of thing before ?? And I DON'T want to have to start replacing worn out A/C parts due to over, unneeded use!
Thanks, Kevin in VT