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12-14-2004, 11:00 AM
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#1 |
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Senior Member
Join Date: Jul 2004
Location: Round Rock, Texas
Posts: 858
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Heater not heating
Finally got the fan working for the A/C and it is getting cold. Now the heater is not heating. I hope there is a simple fix that I just don't know about.
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Hook'em |
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12-14-2004, 11:26 AM
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#2 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,573
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Are the hoses hot to and from the core? Check also the blend door under the dash to make sure the cable is opening and closing it
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12-14-2004, 06:29 PM
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#3 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Heater control valve on inner fender controls water flow to heater core. Vacuum hose could be off under dash or at valve or at vacuum ball on AC box. Check hose to valve from engine to see if it is warm then on other side of valve(if cold valve could be bad or not recieving vacuum signal.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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12-15-2004, 08:14 PM
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#4 |
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Senior Member
Join Date: Jul 2004
Location: Round Rock, Texas
Posts: 858
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Ok, I'm an idiot. Anyone have any pics of what I am supposed to be checking?
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Hook'em |
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12-15-2004, 08:27 PM
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#5 |
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Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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the water valve in the front with the Hoses and a small vacuum hose. This is on 71 and 72 not sure about before years.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne Last edited by dwaite72lnghrn; 12-15-2004 at 08:32 PM. |
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12-15-2004, 08:38 PM
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#6 |
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Senior Member
Join Date: Jul 2004
Location: Round Rock, Texas
Posts: 858
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Mine is set-up a little different. It appears that all of the vacuum hoses are in place.
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Hook'em Last edited by Hook'em; 12-15-2004 at 08:54 PM. |
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12-15-2004, 08:49 PM
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#7 |
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Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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Mine is a big Block and the intake manifold has a tap on the front for the heater. This goes to the valve then to the bootom of the heater core 5/8th hose. From the top of the heater core 3/4 hose it goes to the radiator.
It looks like your valve is in backwards. This might be causing the water not to flow.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne |
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12-15-2004, 10:51 PM
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#8 |
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My other Love
Join Date: Aug 2001
Location: Castlegar B.C. Canada
Posts: 4,085
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for the time being just take that valve right out and connect the hose directly, see if that works, if not your heater core could also be plugged
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 Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life |
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