hot air with heater off
#1
hot air with heater off
I have a 1988 Porsche 944 non-turbo. Recently hot air blows thru the vents on heavy acceleration even when the temperature setting is off. Under normal driving cool air returns. It is especially apparent when in a higher gear trying to accelerate onto an expressway. Otherwise the engine cooling system and engine performance appear normal
#2
Check for problems with the blend door/HVAC system.
Get a vacuum schematic from Porsche (it's not likely to have it in my signature file below) and test the system.
I recommend you get a schematic from Alldata.com. It's a 25 dollar yearly fee. Well worth it.
Get a vacuum schematic from Porsche (it's not likely to have it in my signature file below) and test the system.
I recommend you get a schematic from Alldata.com. It's a 25 dollar yearly fee. Well worth it.