I was just looking into the 87-96 F-150 Forum, and something caught my eye as to maybe a bad head gasket causing overheat problems.

Out of curiousity, what should the water temp difference be if you have a sensor near the water pump, in the heater core line, after it opens as to the back of the cylinder head? The reason I ask is because I have 2 water temp sensors and when my water pump is around 195 the water temp difference near the back of the block(I-6) is 210-215. Is this normal? I have tried both mechanical and electrical senders in the block sender port and come up to near about the same temp.

The reason I ask is that a few years ago I was rough'n it with my g/f on the back roads thru mud and water and at one point, I noticed it bogged down really bad after some extended 4-wheeling, high RPM's, just nailed it through some high water, and all this white cloud was blowing from the exhaust pipe. It smell sweet at the time, but it quit about 15 mins. later.

If I boo-booed, let me know it.
Also, what could be causing my AC not to blow as cold when I'm just coming from normal driving to a stop at idle. It started about the same time I started having problems with my Coolant gauge started *showing* overheating.

Also concerning anything with the coolant, everything new.

New Motorcraft t-stat
New Motorcraft temp sender
New Motorcraft Rad. cap
New 2-row rad.
Upper and Lower rad hoses, 3 years old
New water pump
50/50 water/coolant mix, 1 year-old
New Motorcraft Clutch fan
New Auto-Belt Tensioner
New Motorcraft belt, 2 years old

A/C was checked by dealer, all specs for refrigerant were right on, blows cold*when it has sat overnight* but they neglected to check it after driving it several miles then letting it idle on a hot August day

Appreciate any ideas!