1979 Chevy Truck heater works just barely

Tiny
SPC.JOHNSON
  • MEMBER
  • 1979 CHEVROLET TRUCK
Heater problem
1979 Chevy Truck V8 Four Wheel Drive Automatic N/A miles

hello

my truck is having trouble with the heater it works just enough to defrost the windows some times ive already flushed out the lines, no leaks, and replaced all the hoses and still isn't putting out enough heat what else could be the problem
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Tuesday, February 24th, 2009 AT 10:41 PM

3 Replies

Tiny
DCS1998
  • MEMBER
My first guess would be the heater control valve.
I would by-pass it by using a piece of tubing or a deep socket that fits the ID of the hose and some hose clamps.

If that works, its a control valve not working. Be it the valve or what ever controls the valve ie heater controls inside the cab.

David
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Tuesday, February 24th, 2009 AT 11:13 PM
Tiny
SPC.JOHNSON
  • MEMBER
That means the whole dash would have to be removed right
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Wednesday, February 25th, 2009 AT 8:21 PM
Tiny
DCS1998
  • MEMBER
That means the whole dash would have to be removed right[/quote:e9c766723f]

Best I remeber, the heater control valve on that modle is under the hood. Attached to the intake.

David
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Wednesday, February 25th, 2009 AT 9:12 PM

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