Disabling automatic AC with windshield defogger vent in 97 DSM

[Shpyder]

In my 98 GS Spyder, when the windshield got misty and foggy, I'd turn the vent to the windshield position, and the glass would clear.

In my 97 GST Spyder, when I turn on the windshield vent, my AC comes on automatically, and you cannot turn the damn thing off by pressing the AC button. This is a nuisance. I want to disable this auto-AC-with-windhsield-vent pain in the ass feature. How do I do it?

[spyderturbo007]

Good luck.....I checked into this a year or two ago and couldn't find anything.

I don't know, maybe someone has figured it out by now (other than removing your a/c).

[1stGenRocks]

almost all cars do this. its because apparantly the ac clears the window faster

[Shpyder]

no, not really. in fact, my eclipse is the only car ive sat in that automatically turns on the ac for the vent without an override.

[tfoti]

my 94 escort turns the AC on when you use the defroster. i heard that it is common in alot of cars as well

[Shpyder]

its really annoying, its killing me. i hate that sht. usually, i turn on the vents with warm air and it clears up after a while. theres got to be a way to shut that pos off.

[SLoe]

Disable the defroster switch behind the control knob.It is what turns on the AC compressor when you turn the knob to def, def/floor.You can't miss it.