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#1 |
Senior Member
Join Date: Jun 2003
Location: Westminster, CO
Posts: 3,071
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Heater problems???
Well first the 25a fuse was burned up, easy fix on the one which fixed the blower motor back to blowin'. So now after the truck is warm and you slide it to heat...it comes out hot and then within a min. is only blowing cold air??? Heater core was recently replaced and is not leaking??? I don't know??? Anyone with an idea of what could be wrong?
Alex
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Alex 1971 Lil' Red 350 SBC 700R4 |
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#2 |
It's a catastrophic success.
![]() Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
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Have you checked your water level in your radiator?
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#3 |
Registered User
![]() Join Date: Sep 2001
Location: Cumming, GA
Posts: 471
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or your thermostat could be stuck open
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#4 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Or you didn't burp the system.
You may have a slug of air in the system that needs to get "burped" out.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#5 |
Registered User
Join Date: Feb 2004
Location: Northern Black Hills, SD
Posts: 38
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All of the above, plus . . .does it have a circulating block heater? If so, check that it is not bypassing the heater line and causing a circulation "loop" in the cooling system.
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1969 Chevy K20 Fleetside 1979 Chevy K10 "ROBAHOR" (Rusted Out Beyond All Hope Of Repair) |
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#6 |
Senior Member
Join Date: Jun 2003
Location: Westminster, CO
Posts: 3,071
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Thanks Guys...I'll check it out.
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Alex 1971 Lil' Red 350 SBC 700R4 |
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#7 |
Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Heater control valve on inter fender. Check to see if it is opening. If it is not opening the hose will be cold on heater side while hot on the engine side. (hot water backing up from return line-hence hot air until water cools .
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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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