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Allan in NE

M

Michael Soldan

Well-known Member
..I think you mentioned a product that could improve the flow in a heater core..what was it? anyone else have ideas? The core doesn't leak but it is slow in transfering the heat, I had it flushed and it helped some.
 
GMC 2001 Sierra. Thought it was you, someone mentioned some product that you add to the coolant that helps clean up cores, I think it was called "HEET"
 
(quoted from post at 14:43:18 12/27/08) GMC 2001 Sierra. Thought it was you, someone mentioned some product that you add to the coolant that helps clean up cores, I think it was called "HEET"
Click to expand...
"HEET"! Did you say "HEET"? Why, that's the name of that new "babe" down at "Sammy's Gentlemen's Club" in Pensacola on Gregory Street. Now, I ain't never been there myself, boys. I heard about her from an aquaintance of mine. After all, I'm a respectable business man..... mike
 
Considering that you could probably isolate that heater core by unhooking the hoses from the block, it ought to be fairly simple to put some radiator cleaner stuff in there and circulate it with an electrical pump. I just had that done to my Jeep because I thought it was a mixer flap that was stuck and the mechanic knew better.
 
If a thermostat and or water pump have been replaced and some one used "Blue Glue" or some kind of silicone sealer, it may just be clogged with silicone chunks. Unhook it and backflush it with a garden hose and see what comes out. Had several I worked on where a bunch of " blue fishing worms" came out and fixed the problem. Also check the water control valve if it has A/C and make sure it is working. Sometimes a vacuum hose can come off under the dash and not let the valve open. Some open with vac and some close with vac. Not sure which type you have but not hard to figure out.
 
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