Air moves to deforster vents at light throttle!

Boostman23

Registered User
Have a friend with a 89 XR7, and when he gets just in to boost, maybe 1-2lbs, the A/C, vent goes to the defroster vents, kinda like it does at WOT. Is the computer just reading a signal wrong? Would reseting the computer take care of this?
 
re: air routing troubles

You probably have a crack in one of those little black air hoses at the firewall. Look ove by the passenger side near, or on the firewall. You'll see a couple of black plastic vacumn lines. They're a little thicker than a toothpick. I would bet that one has become brittle and cracked, or broken. Get some vacumn line big enough to fit around the line and shove one end of the broken line in one side, and the other end in the other side and that should do the trick.
 
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