Question about 1991 Buick Century

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Heatercore hose would car over heat and crack block before water get in the oil

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Yes it is very possible for that to happen. IT would happen if the coolant froze and the engine was run before the coolant thawed out properly.

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

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jturcotte
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SOURCE: heating coil gone water leaking

What you have to do is unhook the heater core and loop one of the hoses. Go in the engine compartment and unclamp the 2 hoses from the heater core at the firewall [1] in below picture. Also unclamp one of the hoses at the engine, and circle the other hose back onto that pipe, so that one hose is no longer used but the second hose goes from the engine right back to the engine. Let me know if you have questions.
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Posted on Oct 08, 2010

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2 Answers

Water leaking inside passenger floorboard,thinking its heatercore,where exacly are the hoses and how do i bypass heatercore for temp fix until i get home thx for your help


You would have to either disconnect the two hoses that are on the firewall that enter the heate-core and return hose and some how attempt to connect the two, I do not believe there is a way to do this without complete replacement of the components.

Jul 11, 2011 | 1996 Dodge Caravan

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I have to refill my radiator every 3 days. theres no leaks hose are good i dont know what is the problem? i was thinking it could be the heate core


Have your cooling system pressure tested - you'll find your leak immediately. Could be heater core, could be water pump, could be pinhole leak in radiator or head gasket.

Mar 07, 2011 | Toyota Camry Cars & Trucks

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I notice that there is not an inlet water value from the thermostat to the heater core on my 2000 Chevrolet Silverado 1500 engine is a 5.3 but I notice heater hose is hot and one is cold for the heater...


I have seen dexcool( orange coolant ) clog many things.If it was mine i would take notice of which side is cool and remove hoses and take garden hose and flush it out in reverse.In other words push water in from the cool side in the oposite direction that it normally flows.It worked on my 2001 buick.

Feb 12, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

My husband just replaced the thermastat due to very little heat, still no more heat, theres very little heat & none if I turn the fan up, the fan seams to cool the heat what little there is.


there maybe air in the vswystem or you may need a new heatercore try fulsh the air out take the hoses off the heatercore and run water threw it with a garden hose.goodluck

Jan 17, 2011 | GMC Jimmy Cars & Trucks

1 Answer

What do the heater core hoses connect two


which end one end hooks to heater core the other end hooks to radiator or side of engine hot water from the engine runs thru heatercore air pushs thru heatercore to cause heat in vehicle

Dec 28, 2010 | 1988 Chevrolet G20

1 Answer

I have no heat when idiling could it be a air lock


This sounds like a restricted heatercore, remove the two hoses to heatercore, take a waterhose and blow water through the heater core connections to clear out the core, i use two peices of heater hose, i slde them onto heatercore where the hoses were removed then put the hose nozzle against one end of the hose and blast water into core and see what comes out the other end then do the same on the otherside, this is to me done a few times until clean water flows out and i will bet it will solve the heat problem, because at idle theres not enough force for the coolant to flow through the core and when you rev the engine it forces coolant through the restricted core, hope this helps, good luck.

Nov 12, 2010 | 1995 Oldsmobile Cutlass Supreme

3 Answers

My 98 Pontiac sunfire has been overheating lately. It leaks coolant after each drive, and I have to refill it with water. White steam comes in the vents even if the heat/air is turned off. Now the car...


well, sounds like the heater core is bad for one, ive had a couple with the same problem, first thing is to have a block test done ,this will tell if exhaust is entering the cooling system, this is caused from overheating the motor, causing a warped head or blown head gsaket even crack the head,that is what pops the heatercore to much preasure for the plastic heatercore, if thats the case make sure the car is worth it,start there with the test, may have to have a garage do this test, hope this helps.

Dec 24, 2009 | 1998 Pontiac Sunfire

1 Answer

It does'nt heat ,I flushed heatercore,chaged thermostat,bled the radiator, car does'nt overheat. hoses to heatercore by firewall are cold other hoses are hot.


Need to check the valve that opens and closes the heater hoses and allows the water to travel to/thru the heater core. 1992 Chevrolet Beretta 2.2L SFI OHV 4cyl The Temperature Switch is located: Under hood, center, upper engine area, next to water outlet, driver side of block, mounted below coolant temperature sensor

Dec 07, 2009 | 1992 Chevrolet Beretta

1 Answer

Oil coming from the area where rubber hose goes


pcv cracked? The spark plugs are installed into the top of the head.
Replace cracked or dry rotted hose or the gromit for the crank case pressure valve, this should return through a line to the intake. Good luck

Aug 29, 2009 | 2003 Chrysler PT Cruiser

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