AO Platinum Member
Join Date: Feb 2002
Location: The land that Time forgot
Re: Cabin Heat Update
I think Jess is saying that there's hot air coming through the vents even when the heater is turned off and that's warming the cabin up.
It's worse at high speed because air still passes into the cabin when the car's moving, even if the fan is off. All the fan does is blow air over the heater more quickly, so the fan and heater are two separate issues.
Your fan sounds okay but if the heater is full of hot water, whatever air passes over it will be heated up.
The internal temperature (i.e. the temperature of the water in th eheater) is controlled by a thermostatic valve (you set the temperature, rather than select "Hot" or "Cold") so that's where to look now.
I have no idea how those work.. with luck it's electrical as mechanical failures in the heater matrix usually mean taking half the dash out. If it's just a temp' sensor it might be quite easy to replace/fix.
No bullets for Chaingun..