Today I had some condensation on my windshield so I decided to use my defrost for the first time since getting my car running after it had sat for 7 years. After a 20 mile drive it never heated up. I checked the temp of both heater hoses and both were nice and hot so I know it isnt a flow problem. I am not so familiar with the heating system on this car yet so I've narrowed it down to what I think may be possibilites.
-Heater Control Valve (my best guess but don't have the slightest idea how it works)
-Stopped up heater core
-HVAC unit issue
-Blendoor problem
Where would you guys recommend starting? How can I test to check these things. I have a lot of automotive knowledge but have rarely worked on heater systems, and lets just say the MKIII setup is not like one I've ever messed with before.
-Heater Control Valve (my best guess but don't have the slightest idea how it works)
-Stopped up heater core
-HVAC unit issue
-Blendoor problem
Where would you guys recommend starting? How can I test to check these things. I have a lot of automotive knowledge but have rarely worked on heater systems, and lets just say the MKIII setup is not like one I've ever messed with before.
