New water pump, new thermostat NO HEAT!!
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New water pump, new thermostat NO HEAT!! - 11/1/2007 8:37:35 AM
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yazan84
Posts: 41
Joined: 1/29/2007
Status: offline
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I've recently got a new water pump installed on my 1999 4x4 blazer so as the thermostat, though I still get no heat at all!
what should I do? It's going to be freezing next week!
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RE: New water pump, new thermostat NO HEAT!! - 11/1/2007 8:43:38 AM
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rriddle3
Posts: 1549
Joined: 12/22/2006
From: Fort Worth,Texas
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Did you have the coolant system flushed and refilled? When you run the heater, does the fan operation sound normal? Are there any unusual noises from the lower right side of the dashboard area? Is there a wet area in the passenger floorboard?
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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights
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RE: New water pump, new thermostat NO HEAT!! - 11/1/2007 9:23:00 AM
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Chevy Lover
General Tech Moderator
Posts: 3411
Joined: 6/11/2006
From: Vancouver. B.C. Canada
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Flush the heater core and make sure that the radiator is full after the thermostat is open.
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Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time
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RE: New water pump, new thermostat NO HEAT!! - 11/11/2007 9:40:29 PM
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yazan84
Posts: 41
Joined: 1/29/2007
Status: offline
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Flushed and cleaned my coolant system today and the heat hoses are getting hot but I'm still not getting any heat! My mechanic told my that the heater core could be clogged and/or the temperature knob 'In car thermostat" is not working. Hew also doubted that the heater core was bad!! Any other ideas?
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RE: New water pump, new thermostat NO HEAT!! - 11/11/2007 10:34:59 PM
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thegr81
Posts: 2639
Joined: 1/16/2007
From: PHOENIX,AZ
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Mine was doing that till I figuired out how to get it to work and I know there is something wrong with mine. Before I start the truck I have all the controls off and ready for heat. I start my truck then turn on the heat and it works, as soon as I move my temp knob over to cooler just to have a nice climate it starts blowing cold. If I repeat what I did before it works fine. Just a suggestion for rigging it I guess, otherwise it may just be the switch.
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2001 2wd 4.3 vortec v6
"I'm not fat, I'm a minitrucker"
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