climate control..
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Professional
Joined: Sep 2008
Posts: 183
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From: Florida
yes mine did that too but never did anything with it. i live in florida now so theres almost no need to run the heater but when i was living in Maine a year ago my a/c pump would always run like you said CPTAFW163, so i unplugged a a wire under the hood that disabled power to the a/c. plug it back in during the summer haha
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Joined: Jan 2008
Posts: 5
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On my 98, there is a metal ring inside the vent setting selector switch that controls the A/C compressor. It runs the A/C on the 3 settings you mentioned, and the defrost & foot/defrost. With a heater that already wasn't good, having the A/C run made it warm at best. I traced out the wire that kicks the a/c relay on & wired in a toggle switch, so now I can manually control the A/C. It actually works great, now I can use my heater in the "MAX A/C" setting to get recirc air & not all fresh air like the other settings. Truck warms up much quicker now.
Champion
Joined: Jun 2004
Posts: 2,811
Likes: 2
From: Ft Campbell, KY/TN
On my 98, there is a metal ring inside the vent setting selector switch that controls the A/C compressor. It runs the A/C on the 3 settings you mentioned, and the defrost & foot/defrost. With a heater that already wasn't good, having the A/C run made it warm at best. I traced out the wire that kicks the a/c relay on & wired in a toggle switch, so now I can manually control the A/C. It actually works great, now I can use my heater in the "MAX A/C" setting to get recirc air & not all fresh air like the other settings. Truck warms up much quicker now.
That would be DIY if the year in my book. Everyone who lives up north would do that!!!
--Dan