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

20,840

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.

74,195

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

5,545

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 731 nationwide Firebird listings starting at $3,988.

ZIP:

Pontiac Firebird Experts

  • #1
    Samuel Moore
    Reputation
    990
  • #2
    dandyoun
    Reputation
    840
  • #3
    Tom Demyan
    Reputation
    750
View All

Related Models For Sale

Used Chevrolet Camaro
497 Great Deals out of 31,047 listings starting at $2,495
Used Chevrolet Corvette
108 Great Deals out of 16,074 listings starting at $3,000
Used Ford Mustang
437 Great Deals out of 42,792 listings starting at $1,488
Used Ford Mustang SVT Cobra
5 Great Deals out of 301 listings starting at $4,795
Used Ford F-150
3,205 Great Deals out of 226,284 listings starting at $1,250
Used Jeep Wrangler
438 Great Deals out of 20,081 listings starting at $2,500
Used Ford F-150 SVT Lightning
122 listings starting at $10,500
Used GMC Sierra 1500
1,233 Great Deals out of 63,050 listings starting at $1,200

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.