Ac system

Asked by Jul 04, 2016 at 12:26 AM about the 1992 Pontiac Firebird Base

Question type: Maintenance & Repair

1992 pontiac firebird air comes out of the vents is
very low. I have changed my blower motor, resistor
as well. The motor sounds like it's going really fast
but the air that comes out of the vents is really
slow

3 Answers

20,280

Sounds like the blend door that opens and closes between the heater core for heat and the evaporator for A.C is not operating correctly most of the time the cable that operates the door is broken or has come off.

71,595

Check the ductwork behind the dash. One of the air ducts coming from the blower could be off or mispositioned. If this is a situation where the air blows strong at first, then gradually tapers off, the evaporator core (cooling coil) for the air conditioning is freezing up and blocking the airflow. HTH. -Jim

5,345

Your car also has a rotary vacuum diverter device on the back side of the heater control panel that determines which damper gets pulled by its vacuum line. These diverters are notorious for breaking at the age of your car but can be simply repaired by replacing the main shaft with a machine screw and nut.

Your Answer

Firebird

Looking for a Used Firebird in your area?

CarGurus has 762 nationwide Firebird listings starting at $2,500.

ZIP:

Pontiac Firebird Experts

  • #1
    Samuel Moore
    Reputation
    990
  • #2
    dandyoun
    Reputation
    840
  • #3
    Tom Demyan
    Reputation
    720
View All

Related Models For Sale

Used Chevrolet Camaro
468 Great Deals out of 31,526 listings starting at $3,550
Used Ford Mustang
564 Great Deals out of 36,557 listings starting at $1,500
Used Chevrolet Corvette
196 Great Deals out of 18,735 listings starting at $3,850
Used Ford Mustang SVT Cobra
7 Great Deals out of 307 listings starting at $5,000
Used Pontiac Grand Prix
19 Great Deals out of 2,579 listings starting at $1,450
Used Pontiac Grand Am
1,033 listings
Used Ford F-150
2,849 Great Deals out of 212,987 listings starting at $1,295

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.