Overheating

2003 BUICK CENTURY
125,000 MILES • 3.1L • V6 • 2WD • AUTOMATIC
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SATURNTECH9
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Here is a guide to help you with the heater


https://www.2carpros.com/articles/car-heater-not-working
Dec 12, 2017 at 9:09 PM
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CECE18192004
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Well it's a metal hose that connects to the water pump that has one of the two coolant bleeders. The other end the heater core connects to it. Could that metal hose have a blockage?
Dec 12, 2017 at 9:17 PM
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CECE18192004
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This is the metal hose I am talking about?
Dec 12, 2017 at 9:21 PM
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SATURNTECH9
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It looks like a heater pipe with the bleeder screw highly unlikely it's clogged but if you want to check It you can.Are both the heater hoses getting too hot to hold at operating temp?
Dec 12, 2017 at 9:25 PM
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CECE18192004
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I know the top one gets hot with a lot of pressure on the hose and my husband says the bottom one is the same way.
Dec 13, 2017 at 1:35 AM
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SATURNTECH9
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Then there is good flow thru the heater core maybe the blend door isn't operating correctly that controls the temp control.
Dec 13, 2017 at 11:20 AM
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CECE18192004
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Well after bleeding the system a couple more times it started working. The temperature gauge went up pass halfway then the new thermostat open and we got heat. Hasn't tried to overheat since. Been driving the car all day and no problems. I guess the car is temperamental.
Dec 13, 2017 at 4:06 PM
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SATURNTECH9
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Air can be tricky to bleed sometimes that's why I use my air lift that uses compressed air to pull a vacuum on the system and removes all the air pockets and I can fill the cooling system up using the vacuum that's pulled on the cooling system.
Dec 14, 2017 at 1:46 PM
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CECE18192004
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Took the car out today and what do you know same problem again no heat and overheating. About ready to put it in the shop cause I have no idea what else to do
Dec 14, 2017 at 4:09 PM
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SATURNTECH9
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Have you tried renting a chemical block tester from auto zone to see if there are exhaust gasses in your cooling system?
Dec 15, 2017 at 1:30 PM
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CECE18192004
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Well all day it didn't overheat but of course I had to bleed it three times before it actually acted right. I am about a hundred percent sure now all the air is out. It idled for 30 minutes without bleeding it this last time. Got heat as soon as the temperature gauge started moving. Three weeks later and I am hoping we have finally fixed the car. Let you know for sure later on today.
Dec 16, 2017 at 10:47 PM
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SATURNTECH9
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Ok keep me posted
Dec 16, 2017 at 11:01 PM