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Nate's Alero
03-16-2010, 01:26 PM
Ever since Jan, when i did my Headgaskets, (bank 2 cyl 2 and Bank 1 cyl 3) were leaking, i have had this odd issue, the car never heats over, but it seems like whenever i WOT, i blow a hose off, it's never a bypass hose, main hose or surge tank hose, it's ALWAYS the heater core hoses... i know i do not have any leaks, and i know my heads are golden, and so is my LIMG, coolant is crystal clear and looks like fresh martian piss... so what the hell? my hoses are usually semi hard, but i can ususally make the sides touch each other, but it DOES have pressure... so i don't know why this is doing this? any ideas?
TheEdgeofSanity
03-16-2010, 01:57 PM
low flow condition in your heater core causing a backup of pressure?
[ion] C2
03-16-2010, 02:21 PM
makes way too much sense
Nate's Alero
03-16-2010, 10:39 PM
heat is AMAZING, don't know why that would be it.... getting me mad though, saw the hose coming back off
TheEdgeofSanity
03-17-2010, 12:42 AM
i bet its clogged with dex-crap!
cherrington17
03-17-2010, 12:43 AM
i bet its clogged with dex-crap!

oh god that'd be hilarious
Nate's Alero
03-17-2010, 08:12 AM
i run green... lol i'll blow it out then and get back to you
TheEdgeofSanity
03-17-2010, 10:21 AM
over on the bonneville forum, they have major issues with heater cores clogging with dex-cool. same issue with many s-10 truck and blazer owners!
Cliff8928
03-18-2010, 01:19 AM
I know with the S-Trucks that issue is because the heater core is pretty well the highest point in the system so that's the place the air pockets will be. That happens if the radiator cap isn't good.
Nate's Alero
03-18-2010, 06:39 AM
cap is new... but my heat is like EXCELLENT, like make my vents soft excellent... how could it be clogged?
Runaboveit
03-20-2010, 10:21 AM
Where do the heater hoses become disconnected at? The pipes or the heater core itself?
Nate's Alero
03-20-2010, 10:27 AM
Where do the heater hoses become disconnected at? The pipes or the heater core itself?

where the disconnect used to be (hacked it off and put a clamp there, the disconnect broke)
Runaboveit
03-20-2010, 11:10 AM
the hose could be deterioriating where it sits around the pipe, and becoming too soft to keep a good seal with your clamp. and making it slide off under sudden coolant pressure.

I would recomend a new hose & clamp. Or IMO a new hose, clamp, and replace the 8 dollar quick connector that should be there. You can get that from nearly any auto store. It helps keep a tight seal and insulates the heater hose from direct contact with that hot ass pipe.
Nate's Alero
03-20-2010, 11:37 AM
the hose could be deterioriating where it sits around the pipe, and becoming too soft to keep a good seal with your clamp. and making it slide off under sudden coolant pressure.

I would recomend a new hose & clamp. Or IMO a new hose, clamp, and replace the 8 dollar quick connector that should be there. You can get that from nearly any auto store. It helps keep a tight seal and insulates the heater hose from direct contact with that hot ass pipe.

meh, i s'pose you're right
Gr1m
03-20-2010, 11:50 AM
your water pump is shot and it is not circulating the coolant correctly and causing an unusual amount of pressure to build up an air pocket in your coolant system?
Nate's Alero
03-20-2010, 11:53 AM
your water pump is shot and it is not circulating the coolant correctly and causing an unusual amount of pressure to build up an air pocket in your coolant system?

and the water pump is new and there is NO air in my cooling system?
Gr1m
03-20-2010, 12:01 PM
how is the hose coming off if it is clamped on then? obviously there is a pressure buildup in the lines
Runaboveit
03-20-2010, 12:09 PM
how is the hose coming off if it is clamped on then? obviously there is a pressure buildup in the lines

From the coolant being rushed through the engine. When you hit the gas that spins the water pump faster to keep up with the increased heat being caused inside the engine from reving it. Hot coolant being rushed through rubber hoses. If you don't have a secure connection it will blow off from the force of the coolant slamming through it, especially at WOT.

I too had my connector break and upon testing for leaks did a WOT and my hose slipped. Clamped it for a while super tight, until it started leaking and sliding, and then put a new connector on it and havent had an issue yet.

Just my .02