s-10 heater problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

EyeH8the24 · 01-10-2010, 06:17 PM

my daughters 97 s-10 has a heater problem...it only blows cold air ...it has a new thermostat and the engine heats up to around 195 to 200..but it only blows cold air ..any suggestions ?

stan79chevy · 01-10-2010, 08:36 PM

un hook the heater hoses. Put garden hose on one side and purge out all the crap in the heater core. Then do the same to the radiator then the engine block and fill it up with the green stuff. That orange fluid is good until it gets slightly old then it turns into some kind of mud..aslo if you mix it with the green it turns into mud.

stan

68C15 · 01-10-2010, 11:22 PM

the heater cores being so high in the system combined with Dexcool and a system that has even the smallest amount of air in it will plug up a heater core. the dexcool sludges when exposed to air.
flush the whole system and go with green.

EyeH8the24 · 01-11-2010, 07:26 PM

thanks ..i have already flushed everything but the heater core...im gonna do that this weekend .....i have been running the green stuff for last two years ...the dexcool stuff sucks ..it totally clogged the old radiator ...thanks again ill let you guys know how this works out

a55togo · 01-13-2010, 01:19 PM

check the heater control valve to be sure it is opening.
Ed

68C15 · 01-13-2010, 11:09 PM

Quote:

Originally Posted by a55togo

check the heater control valve to be sure it is opening.
Ed

these don't have one. temperature is regulated with a door driven with a feedback actuator.

01-10-2010, 06:17 PM	#1
EyeH8the24 Registered User Join Date: Dec 2004 Location: beulah,alabama Posts: 1,075	s-10 heater problems my daughters 97 s-10 has a heater problem...it only blows cold air ...it has a new thermostat and the engine heats up to around 195 to 200..but it only blows cold air ..any suggestions ? __________________ DOH !!!!!!!

01-10-2010, 08:36 PM	#2
stan79chevy Registered User Join Date: Sep 2003 Location: COVINGTON GEORGIA Posts: 477	Re: s-10 heater problems un hook the heater hoses. Put garden hose on one side and purge out all the crap in the heater core. Then do the same to the radiator then the engine block and fill it up with the green stuff. That orange fluid is good until it gets slightly old then it turns into some kind of mud..aslo if you mix it with the green it turns into mud. stan __________________ 79 chevy k20 350/350/205/D44/14bFF 4.56 gears rock LWB pimer black 01 S-10 ZR2 extended cab 4.3/4L60E/233 3.73 gear 31" DICK CEPEK CRUSHERS

01-10-2010, 11:22 PM	#3
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: s-10 heater problems the heater cores being so high in the system combined with Dexcool and a system that has even the smallest amount of air in it will plug up a heater core. the dexcool sludges when exposed to air. flush the whole system and go with green.

01-11-2010, 07:26 PM	#4
EyeH8the24 Registered User Join Date: Dec 2004 Location: beulah,alabama Posts: 1,075	Re: s-10 heater problems thanks ..i have already flushed everything but the heater core...im gonna do that this weekend .....i have been running the green stuff for last two years ...the dexcool stuff sucks ..it totally clogged the old radiator ...thanks again ill let you guys know how this works out __________________ DOH !!!!!!!

01-13-2010, 01:19 PM	#5
a55togo Registered User Join Date: Oct 2007 Location: Turlock, Ca Posts: 32	Re: s-10 heater problems check the heater control valve to be sure it is opening. Ed



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