Where is the heater located on a Toyota 4Runner?
The heater core is part of your engine’s cooling system, imagine it as a box situated behind the dashboard that has hot engine coolant passing through it. When you crank up the heater, the blower pushes air past the core and into the cabin.
What are the symptoms of a bad heater core?
When you crank up the heater, the blower pushes air past the core and into the cabin. Symptoms of a heater core gone bad are twofold and terrible: first, the heat no longer works, and second, you may have found a sweet, wet substance in the passenger-side footwell. The sweet smell is the smell of engine coolant leaking out of the heater core.
Is it possible to flush out a heater core?
It might be possible to flush out the heater core’s passages with either a water hose or air pressure, but many modern heater cores have plastic lines and tanks so this can be risky. Don’t exceed the pressure stated on the radiator cap when flushing.
What happens when coolant comes out of a heater core?
The amount of coolant spraying out of the heater core is enough to form a mist that coats your windows and is difficult to wash off. This is bad — not only because it blocks your vision, but also because breathing ethylene glycol is harmful to your health.
How do you repair a Toyota 4Runner blower?
Remove the dash. Remove the two supports for the stereo. Remove the two fasteners and the two nuts as well as bolts on the support bar on the passenger side, then pull the bar out. Remove the air duct between the heater core and blower motor. Remove the heater core and install the new one in its place.
How do you install a new car heater?
Install the new heater core. Reinstall the duct between the heater core and blower motor, then the passenger side support bar and stereo surrounds. Slide the dash back in reconnect the steering column to the support bar. Reinstall the instrument cluster, stereo, climate control knobs, and surrounding trim piece.
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