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Why doesn't the Suburban heater doors open?
Check for cracked vaccum line. Small line from engone compartment side through the firewall to the heater doors. The heater doors are controlled by vaccum.
Is there a driver and a passenger heater core in a 2000 Jeep Grand Cherokee?
No. one heater core, two airflow control doors. Called blend doors, very prone to breaking.
Is there relay switch for heater fan?
Yes there is, but it only operates the high speed function.
On my 88 Dakota on the left side facing the master cylynder is a vacuum line that runs down through the fire wall it has broken off and i would like to know where it goes and what it is for?
That is the vacuum the operates the heater control doors , without it cant change from defrost floor and such
Where are the vacuum lines for the heater on a 2005 dodge ram 5.7 hemi?
The heater/ac doors are all electric. They are not vacuum controlled.
How do you open Buick roadmaster heater blend doors?
How to unlock a buick roadmaster
How do you get warmer air to Cherokee heater?
Air flows through the heater core to warm it up. Assuming the heater core is circulating water from the radiator, the problem is usually with the blend doors. These doors regulate air flow through the heater core and when they break, they usually block the input into the heater core and kill the heat. Check heatertreater.net for diagnostic information and an inexpensive fix.
Where is the heater control valve on a Chrysler Sebring?
The heater output temperature is regulated by airflow control doors inside the dash, not a water valve.
When operating the heater in a 2000 Toyota Tacoma PreRunner does the AC button have to be off and not pushed in?
The AC switch operates the AC compressor and should have no bearing on your heater function. If your heater is not working properly, you may have a weak thermostat.
Where is the heater control valve located on a 2000 Chrysler 300m?
A 2000 Chrysler 300m does not have a heater valve. The cabin temperature is controlled by airflow doors.
Why does your 2002 Montero heater blow cold on the passenger side and warm on the driver side?
Check the following........... 1. A/C heater control doors. 2. A/C heater controller. 3. Trash in the heater box. 4. Partly clogged up heater core.
Defroster blowes cold air on 1991 Chevy truck?
Check the following...................... 1. A/C heater control doors. 2. Check for vacuum leaks. 3. Check for broken a/c heater doors. 4. Check main controller head.
