Ventilation is only coming out of dash vents

STEVENPK

MEMBER
1989 OLDSMOBILE CIERA
33,000 MILES

1989 oldsmobile cutlass ciera hvac control stopped working. Air only blows out the vent, will not switch to defrost or heat. I can't switch between different settings, air only comes out the dash vents. Temp selector works fine

Friday, November 11th, 2011 AT 7:43 PM

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Check the actuators to see if they are working they are in the heater unit. Generic pic enclosed.

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Friday, November 11th, 2011 AT 8:55 PM

STEVENPK

MEMBER
2 POSTS

I already checked that and all seems fine. It's not switching from vent, heat, defrost, A/C. The air just blows out of the dash vent area and will not blow out by windshield when you set it on defrost or when you set it to heat it will not blow out by your feet. It just stays blowing out of the dash vents.

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Friday, November 11th, 2011 AT 9:06 PM

HMAC300

MECHANIC
48,601 POSTS

I sent the wrong pic these may not be getting power or vacuum depending on how they are operated. The actuators direct where the air goes in the heater.

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