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06-22-2009, 07:22 PM
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#1 |
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Chance
 
Join Date: Sep 2001
Location: Belcourt ,ND, USA
Posts: 750
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Heat Resistor
What does a heat resistor do? My truck continues to blow heat even though the fan is off and the entry door on the heater box is closed. Does the heat resistor have anything to do with this?
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1968 Chevrolet Stepside BB 396 w/TH400 1972 Chevrolet 3/4 Ton 4x4 BB 496 w/TH400 |
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06-22-2009, 07:32 PM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Heat Resistor
I suspect that your problem is caused by the hot water flowing through the heater core and air leakage by the heater door makes the heater put out hot air.
A fix that works pretty well is to put a shut off valve in the 5/8" heater hose so the water flow can be turned off. If you have AC then the vacuum water shut off valve may be a problem. Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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06-22-2009, 09:07 PM
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Heat Resistor
the resistor controls the fan speeds.
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06-22-2009, 09:28 PM
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#4 | |
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Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: Heat Resistor
Quote:
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