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What causes the air conditioning on a GMC Safari to blow out the heater vents?
Wiki User
∙ 15y ago
You have a broken vacuum hose under the hood that supplies the switch.
Wiki User
∙ 15y ago
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What causes steam to blow through the air conditioning and heating vents in a car?
The steam could be coolant from a bad heater core.
What causes cold air to come out of air vents when heater not on?
The heater may not be on - but the fan still blows air through the vents when they're open !
When you use air conditioning in car you smell antifreeze and see vapor coming from vents?
You have either a cracked heater core or bad heater hoses that are allowing antifreeze to enter into the vehicle............
On a 1995 Gmc sierra truck why does the air conditioning vents on dash work in every mode except cold air cold air will only blow out from floor vents?
The a/c - heater controller is out...........
Why does your air conditioning and heater only blow out the bottom vents on your 1997 trans am?
Bad selector? vacuum leak at engine or vacuum motors under dash
What causes antifreeze coming through vents in Crown Victoria?
Most likely the heater core is leaking. Has to be replaced.
Where is the heater control valve on a 1994 firebird?
under the hood. on the passenger side. near the silver air conditioning can looking thing. you will see a black thing with 3 vacuum lines attached. this is what controls the heater vents.
What causes rust to grow on air conditioning vents does that mean I need a new ac?
Call a professional HVAC service person. Ask them.
Why is there no warm air from the vents in my supra?
!. You could have a bad heater core. 2. You could have a blown fuse. 3. Your thermostat could be bad. 4. Your air conditioning could be on.
What causes steam to come out of air vents in 1999 expediton?
This is caused by a faulty heater core that has corroded and now has a leak. It needs to be replaced.
What causes steam to come out of vents and water in driverside floorboard?
Heating hoses are exposed and need to be replaced. The heater core is leaking coolant.
What are the Symptems of a bad heater core?
smoky mist coming from the heater vents.
