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Hi, I'm a new member and have a 98 F-150 that has an ac problem that has me frustrated. When I turn it on it blows cold, but if I give it much gas, the cold air turns into very hot air. Sometimes if I tap on the brakes and turn the ac off and on it will get cold again and may stay that way for days. Sometimes I may have to come to a stop and turn it on and off several times and it works again. Any Ideas?? and thanks
Location: Detroit, Ex-home of Mayor Kwami Kilpatrick
Posts: 9
it's your alternator. it's probably an older 60 or 80 amp and needs to be replaced.
the air runs for awhile when the battery is charging, then blows hot when the alt.
quits charging. (you step on the brakes and the alt starts charging again)
install a 100 amp alt and POOF, problem solved...
same thing happened to me on my 88 marquis, and my buddies 94 lincoln.
i also installed a new battery on my 88, no problems since.
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98 f-150 ac sometimes works 
Linear Mode
