Heater Core Probs... Again!!
 

Hey guys just me again... Ha. On betty (my 79 k10) the heater core started leakin. Well i replaced it with one from the parts store n the little tabs/ bolts on the top n side broke which where my problems began. i got a different box n well the heat isn't hot and it has all good tabs... It's Not rven warm. I ended up running hoses from the intake to water pump hopen to get hot water and it still didn't nothin. I'm to the stumped point anymore.
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Re: Heater Core Probs... Again!!
 

Was this new core alujerbin? Or copper? You want the flow to go from the bottom to the top so it blows out any air bubbles. Is your truck a/c equipped or once was?
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Re: Heater Core Probs... Again!!
 

Aluminm core, and non ac... Kinda sucks a/c cab parts are a lot more common round here
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Re: Heater Core Probs... Again!!
 

Ok aluminum heater cores are real bad they conduct heat horribly. You need a quality copper style one. That may be part if the issue
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Re: Heater Core Probs... Again!!
 

Ill head to the oarts store morrow then... Hooe this solves it the high is 29 degrees tomorrow n lookin like the rest of the week.
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Re: Heater Core Probs... Again!!
 

Yah so after this make sure the water exits the top and make sure the engine is fully warm. Also make sure the blower is working
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Re: Heater Core Probs... Again!!
 

,ake sure your heater lines are right from motor and back. water pump is sucktoin intack is pressore

Re: Heater Core Probs... Again!!
 

I'll hook em up like that too hope it all adds up to somethin workin!
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Re: Heater Core Probs... Again!!
 

Little insight. Can't buy a copper core, no surprise there. I put a 195 thermostat in it hopin to get it hotter, no change... Routed my hoses the 3/4 from intake to top 5/8 from bottom to pump. Still nothin.
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Re: Heater Core Probs... Again!!
 

what is your anti freeze rated too
were getting -29C this week here ...sure your not icing up?

Re: Heater Core Probs... Again!!
 

It's a 50/50 mix of o'reilly green stuff. One gLlon full one gallon water then top off half/half pre-mix. Says -40c to i think 250? Not for sure.
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Re: Heater Core Probs... Again!!
 

i'd get the tester to confirm,too much/too little anti freeze would get slushy,or worse

Re: Heater Core Probs... Again!!
 

It's tested good about 60/40 honestly i flush it twice a year.
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Re: Heater Core Probs... Again!!
 

lol don't need to be honest with me,just your truck
twice a year?...why

Re: Heater Core Probs... Again!!
 

Go with copper. You can order AC Delco or GM OEM online at cheap prices and free shipping.
Make sure you have the correct thermostat in your truck and that it is opening, not stuck shut.

Re: Heater Core Probs... Again!!
 

I just put a 195 in it last night literally lol. And i'll look tonight for a copper ine
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