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05-17-2006, 10:26 PM
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#1 |
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Registered User
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
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Whacked Heater Control
Crazy problem here....
Hook up the vacuum on the heater contol hose, temperature guage become iratic, and wrong. Swings like a gate in the wind Unhook vacuum, water circulates through heater core, guage indicates a true steady reading. Can follow thermostat opening after cold start and everything. System appears correct according to pictures found from search. 1972 Blazer w/AC Heater hose go as follows: Intake-Heater Control Vacuum Switch-Heater core-Radiator |
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05-17-2006, 11:56 PM
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#2 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Re: Whacked Heater Control
Where is your temp sensor located?
__________________
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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05-18-2006, 05:25 AM
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#3 |
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Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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Re: Whacked Heater Control
Sounds like a bad thermostat.
__________________
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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05-18-2006, 06:13 AM
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#4 |
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Registered User
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
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Re: Whacked Heater Control
Temp Sending Unit on Drivers side
THermostat bad, should be hot all the time??? |
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