Heat coming in from the floorboards????
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Launching!
Joined: Nov 2005
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Heat coming in from the floorboards???? I have really hot heat coming in from my floorboards, especially right next to my feet where the tranny is. My gauges read fine, temp is extremely normal...I never use my heater or air conditioner. When I'm driving it feels like my damn heater is on, have to crack the windows just to cool off in the rain.
Its really strange, anyone know what might be causing this???
Thanks!
Its really strange, anyone know what might be causing this???
Thanks!
Yea, my AC/Heater is always on a very low setting even when it is on the off position. Most newer GM vehicles do that. That proboly isnt it, but it would be a nice simple solution if it was. I know mine gets pretty hot around the shif boot, i just thought it was normal.
2 culprits here...
1. Because of the RWD V8 drivetrain layout, the exhaust heats up the floorboards even with the proper heat shielding in place. Normal characteristic of just about every RWD V8 I've ever driven. It gets MUCH worse with uncoated headers!
2. Improper use or malfunction of the HVAC system. Hot engine coolant flows to the heater core. With the HVAC system in the OFF setting, the lack of vacuum opens up the DEFROST and FLOOR doors. Driving around creates pressure at the base of the windshield (HVAC fresh air inlet) and moves air through the HVAC system even with the fan off. Hot heater core + open floor door + airflow = hot floorboards. Some manufacturers incorporate a fresh air/recirculate manual mode that is selectable even with the HVAC off. A VERY good idea!
1. Because of the RWD V8 drivetrain layout, the exhaust heats up the floorboards even with the proper heat shielding in place. Normal characteristic of just about every RWD V8 I've ever driven. It gets MUCH worse with uncoated headers!
2. Improper use or malfunction of the HVAC system. Hot engine coolant flows to the heater core. With the HVAC system in the OFF setting, the lack of vacuum opens up the DEFROST and FLOOR doors. Driving around creates pressure at the base of the windshield (HVAC fresh air inlet) and moves air through the HVAC system even with the fan off. Hot heater core + open floor door + airflow = hot floorboards. Some manufacturers incorporate a fresh air/recirculate manual mode that is selectable even with the HVAC off. A VERY good idea!
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Originally Posted by Marc 85Z28
2 culprits here...
1. Because of the RWD V8 drivetrain layout, the exhaust heats up the floorboards even with the proper heat shielding in place. Normal characteristic of just about every RWD V8 I've ever driven. It gets MUCH worse with uncoated headers!
2. Improper use or malfunction of the HVAC system. Hot engine coolant flows to the heater core. With the HVAC system in the OFF setting, the lack of vacuum opens up the DEFROST and FLOOR doors. Driving around creates pressure at the base of the windshield (HVAC fresh air inlet) and moves air through the HVAC system even with the fan off. Hot heater core + open floor door + airflow = hot floorboards. Some manufacturers incorporate a fresh air/recirculate manual mode that is selectable even with the HVAC off. A VERY good idea!
1. Because of the RWD V8 drivetrain layout, the exhaust heats up the floorboards even with the proper heat shielding in place. Normal characteristic of just about every RWD V8 I've ever driven. It gets MUCH worse with uncoated headers!
2. Improper use or malfunction of the HVAC system. Hot engine coolant flows to the heater core. With the HVAC system in the OFF setting, the lack of vacuum opens up the DEFROST and FLOOR doors. Driving around creates pressure at the base of the windshield (HVAC fresh air inlet) and moves air through the HVAC system even with the fan off. Hot heater core + open floor door + airflow = hot floorboards. Some manufacturers incorporate a fresh air/recirculate manual mode that is selectable even with the HVAC off. A VERY good idea!
pretty much any vehicle ive owned thats had after market header and off road pipe has done this. Even my swapped civic and it was only a 1.8L.
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Originally Posted by jond99
After owning a few fbods i figured it was just a normal thing 
