Driver compartment gets very hot after driving for about 45 minutes or so
Engine temp gauge is normal but inside driver compartment (driver front seat area, especially near feet/legs) it is getting very hot. I have to open the windows, even if driving at night. Starts after about 45 minutes driving. 248,000 miles on the car so I replaced radiator, hoses and thermostat with new ones, and it still does this. AC and heater are working. Engine temp gauge shows normal. Any ideas? Heater control valve a possibility?
First track down where the heat is coming from, ie the heater ducts or radiating through the floor etc. If it is the heater then the blend doors are not sealing inside the heater box, if coming through the flooring then look underneath on that side, due to the age you could have lost some of the shielding from around the exhaust or converters.
Thanks tennishoes, very helpful. I had the heater ducts and all related issues thoroughly checked out, and there were no problems there. I do think it is likely something to do with the shielding of exhaust/converter and will go in that direction. Tonight, after driving for an hour, it started to really radiate up through the floor/seat area and on the hump with the shifter. All of this was only on the driver's side though.
Definitely check the shielding, you could also have a catalyst starting to fail and getting hot, or a sensor is sending a wrong signal back to the computer causing an air/fuel mixture problem, you could check to see if the catalyst and pipes are starting to glow red after a run like you just did.
I just had my stock piping removed on my car and replaced with a stainless steel unit. This was yesterday, but the heat radiating through the floor behind the drivers seat really started getting warm tonight on my drive home. The passengers side front of the engine started making an is noise I've never heard before after the heat was there for a bit.
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