General Maintenance & Repairs - A/c not blowing out the vent
05-12-2011, 10:17 AM
I recently got a ms4 cammed auto car with a 3600 stall, the a/c works but only comes through the floor and dash not out the vents. The brakes are kinda iffy so i'm guessing it's a vacuum problem but idk, what do you guys think ???
05-12-2011, 05:25 PM
You're on the right track, most likely a vacuum leak. Sounds like you're in "default mode." Check all the vacuum lines behind the intake.
05-12-2011, 08:49 PM
I bet its the A/C heater vaccum check valve; right by the PCM, a tiny little buble plastic piece where 3 tiny rubber lines meet. I replaced mine 3 days ago cause I had the same problem :)
Got it for 2$ in a junkyard cause overhere, this part is not produced anymore and parts store dont have it! got it from scrap V6 model..
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