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03-09-2005, 09:32 PM
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#1 |
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Where's my beer?
Join Date: Oct 2004
Location: Glen Allen, VA
Posts: 1,772
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I'd replace the thermostat just because it's so cheap, just to rule that out.
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70 C10, shortstep, .30 over 250,Hurst shifted 3 spd parts hauler. Holley 390, Clifford Intake, Header, ported cylinder head, unknown bigger cam. 79 Corvette L82, 4 spd, black, red interior, headers, flowmasters, and unkown bigger cam. '03 Grand Cherokee Laredo, 4.0 4x4 daily driver. 165K miles, and runs great '08 Tahoe LTZ 4x4 155K |
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03-09-2005, 09:38 PM
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#2 |
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Registered User
Join Date: Oct 2004
Location: Walker Co. Alabama
Posts: 474
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Join the club! My 69 doesn't put out much heat either. It has a new 180 thermostat, and a new heater core. It's warm enough to melt frost on the window but not warm enough to melt frost on me going to the truck on cold mornings. Maybe I can count on an early spring unless I figure it out.
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If it don't fit, force it,...If it still don't fit , modify it 'till it does fit !!!  
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03-10-2005, 07:33 AM
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#3 |
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Registered User
Join Date: Aug 2003
Location: Bonner Springs, KS
Posts: 315
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If the heater control valve is working, you probably don't have any flow through the core. Take off the hoses and stick a garden hose (with a high-pressure nozzle) in one of the hoses and hook up to HOT water and let it flush for about 5-min (I used the hot water valve to the washing machine). Then switch hoses and flush the other way. Then, just hook everything back up. I just had to do this on my Tahoe and the air temperature increased dramatically. It may not be your problem but, it is an easy thing to do before trying other options. Also, you may want to do this outside as it will make quite a mess.
Good Luck! TP 
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