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454 Vortec Overheating, I'm running out of ideas....

I bought some coolant for my daughter's car. Looking at AutoZone and O'Reilly's they had lots of pre mix only generic concentrate. There virtually no difference in price.
I ended up ordering the correct concentrate from Amazon.
 
Ok I’m catching up. The second pump stopped the overheating issue and is leaking from the back plate. Or is the overheating still happing along with the new pump leaking.


If the overheating stopped, get a new pump. I agree it sucks to have to go through the effort again but it’s not as hard to do as other pumps I’ve done.

If it’s still overheating, then I’d revisit the block test with the tester for combustion gases in the cooling system. Got to get it hot to do test it.
 
ZooMad75 said:
Ok I’m catching up. The second pump stopped the overheating issue and is leaking from the back plate. Or is the overheating still happing along with the new pump leaking.


If the overheating stopped, get a new pump. I agree it sucks to have to go through the effort again but it’s not as hard to do as other pumps I’ve done.

If it’s still overheating, then I’d revisit the block test with the tester for combustion gases in the cooling system. Got to get it hot to do test it.
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The overheat problem was fixed with the new(leaky) pump.
 
mrk5 said:
Every time I've looked there's only $2 or $3 difference between 50/50 and concentrate in the same brand. Distilled water is $2/gallon at Walmart or Walgreens.
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Never seen it closer than maybe $7/gallon. Distilled water is what you get out of the dehumidifier. Have you ever heard of someone losing an engine because they cut the glycol with well water?
 
Blue85 said:
Never seen it closer than maybe $7/gallon. Distilled water is what you get out of the dehumidifier. Have you ever heard of someone losing an engine because they cut the glycol with well water?
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I have seen enough corrosion and mineral buildup without adding to it with water that still carries the extra stuff.

@skunked are you considering pulling the rear cover off of the next pump to add a thin film of sealer to the gasket?
 
Wes Harden said:
I bought some coolant for my daughter's car. Looking at AutoZone and O'Reilly's they had lots of pre mix only generic concentrate. There virtually no difference in price.
I ended up ordering the correct concentrate from Amazon.
Click to expand...

Just checked Napa, like for like, it's $6 a gallon cheaper to buy concentrate, factoring in $4 for two gallons of distilled.

Regardless. I can't believe how expensive coolant has gotten. Probably because there are so many specific types now.
 
I did think it seemed pricy this last time I bought some.

I'll buy the 50/50 if I only need a gallon or so, but I needed 4 gallons to refill the system with the new engine and I think mixing it myself is worth it in that case.
 
skunked said:
The thought crossed my mind, however I feel like I shouldn't need to do that.
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I understand that 100%. However I have found some situations where the extra effort pays off.
Cummins says that most of their gaskets should be installed dry without sealer. I have found through failure that some gaskets stay sealed longer or permanently with a thin coat of sealant.

I would at least check the bolts for a reasonable torque.
 
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