I have a quick question. I have a 98 F150 Supercab which I bought a couple of weeks ago. I noticed that anytime I turn on the inside air (not even the a/c or max a/c, but anything at all) I get some water leakage afterwards. Yesterday I heard it dripping on something hot (I'm assuming exhaust manis, but it could have been the exhaust pipe or engine itself...) and noticed some water on the ground. My question: does the a/c run no matter what when you turn on the inside air, even if it is the defrost or panel/floor? If so, I won't worry too much about it. I drove this morning without the air on and didn't notice any noise as I got out, but will check again on the way home today.

Any help appriciated.

Our 97 Taurus wagon would run the AC pump in any fan position, fresh air, defroster, all...

Pressurize the cooling system to raise the boiling boint and look for leaks. Could be a pin size hole dripping (normally at idle or after turning the car off)and then the faster you go could be sraying a tad towards the motor witch would hit the header and smoke. Check the upper and lower radiator hose for leaks.