1994 Infiniti J30 air condition

1994 INFINITI J30
110,000 MILES • 3.0L • 6 CYL • RWD • AUTOMATIC
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MANAGUANICARAGUA
  • MEMBER
  • 1 POST
the air is not blowing to the front. it keep blowing to the whindshield only
Jul 6, 2014 at 3:33 PM
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CARADIODOC
  • Experienced Mechanic
  • 34,367 POSTS
If the air blows only from the defroster vents, whether using the heater or air conditioning, and regardless of which mode is selected, you most likely have vacuum-operated mode doors, and a break in the vacuum hose. On most cars the mode doors are spring-loaded to default to the defrost position for safety reasons. Your feet might freeze but the windshield will be clear.

There should be a vacuum hose routing diagram under the hood, on a sticker. Look on that for a small hose and check valve going through the firewall. Check if that hose is cracked or disconnected.
Jul 6, 2014 at 3:50 PM
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