It is not as wierd as you think. You need to take your car back to your tranny mechanic. He messed up.

Underneath your accelorator pedal there is a switch. When you mash the pedal the switch is closed which is suppose to activate the step down selinoid on the transmission. If the wire is shorted or the selinoid is bad, it causes too much current in the circuit and blows the fuse. This is fuse # 14 which also controls part of your climate control, specificly the valve that regulates the amount of radiator fluid to the heater core. The climate control kicks the fan on to high trying to cool the cabin,.......yes with hot air. Go figure.

TimK

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EPA 609 & 608 HVAC Certified
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83' 300D Turbo - 300K + Miles
00' 1.9L TDI Beetle
85' 6.5L Turbo, GV-OD, GMC Suburban,
67' 2.5L Diesel NA - Land Rover Series IIA

Here's what you do if it's so cold your diesel fuel gels. Smear some on some toast and stay inside until it warms up outside.