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I have a 2000 Buick century .... its keeps running hot... I changed the thermostat.. water pump.. flushed it and it still running hot... then I removed the thermostat and its runs hot again... if I take the cap off the water pushes out instead of in, like its not going through the motor.. help please

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I believe you have a pocket of air in your system. This happened to me before and I had all the same symptoms. I realized I was going to have to push water through the system manually to get it out. When I changed my water pump and hooked everything back up, there was no flow of coolant through the system, so I made sure when I hooked the hoses back up there was no air in them by pouring coolant into them. If that doesn't work, you can use a garden hose to force start the coolant.

Posted on Nov 23, 2014

  • Christy Gainer Nov 23, 2014

    I just tried doing what you suggested but no luck :( still not flowing.

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Posted on Jan 02, 2017

  • 131 Answers

SOURCE: Water pump problem?

You need to make sure you don’t have an air lock. Find the bleeder valve for the coolant system and release the air. If you can’t find the bleeder, find the highest hose for the coolant system and make sure coolant is flowing through it.

Posted on Jul 05, 2008

leetamara
  • 702 Answers

SOURCE: 94 jeep wrangler overheating

Have the cooling system pressure tested. If it holds pressure, that's a good thing. If it doesn't hold pressure, you may have a leaking head gasket. What may be happening is the crack in the head gasket could be blowing hot air into the cooling system causing it to overheat.

Posted on Sep 27, 2008

davidkay61
  • 23 Answers

SOURCE: running hot

Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Posted on Dec 01, 2008

  • 64 Answers

SOURCE: 2000 Malibu keeps running hot.

You replaced the head gasket but did you get the head or heads checked for cracks or check the block for warpage?

Posted on Nov 21, 2009

  • 365 Answers

SOURCE: 2000 chevy silverado keeps getting hot. Changed

possible blown head gasket, have a leak down test done to see if there is bubbles present in the radiator when looking in through the radiator cap hole. you can also remove spark plugs and see if there is any water or moisture present on plugs.
even though you may have flushed your radiator ( I presume that "you" have done that) there may still be a few bars blocked with dirt etc, you may have to have the top and bottom tank removed and have the individual bars cleaned to make sure there are no blocked bars.
Hope this helps

Posted on Jun 11, 2010

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1 Answer

I have a 2001 buick century, changed thermostat water pump and radiator and still overheats and looses power? Any ideas


head gasket maybe air in system fill to the top and start engine let run till all the air in the system comes out it will push water out keep adding water till it takes a big drink and stops pushing water out

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Changed thermostat water pump and radiator on my 2001 Buick Century but still keep running hot...what else could be the problem???HELP PLEASE


Check to see if the radiator fan is on when the AC is on. The new thermostat may have a higher operating temperature than the old one. The thermostat could have been installed upside down. The gauge is defective and reading the wrong temperature.

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Probably a cracked cylinder head or block, or both. Or the head was warped and the head gasket has blown again.
When the engine gets very hot the gasket expands, and after a few times it will not return to its original shape.

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Before you did any repairs to address your overheating problem, did you check to see if your fans were working at all ? One way to check if they are working is by starting your vehicle and turning the A/C on, they should automatically start running. If they do not, begin to perform diagnosis to that electric circuit.

Jun 19, 2017 | 2003 Buick Century

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Maybe a thermostat..or the heatercore clogged up..If the vehicle runs hot pretty quick then its the thermostat stuck closed..If the vehicle is not running hot,but you have no heat then the thermostat will be stuck open or the heater core not circulating

Sep 04, 2011 | 2000 Buick Century

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Sep 20, 2009 | 2000 Cadillac DeVille

1 Answer

My 2000 buick century is over heating fans are running i also have a hard shift after about 30 min of driving are they related ?


Hi, these are two separate issue here.

The abnormal shift is isolated within three ares. i would suggest checking the transmission fluid level first to make sure of the proper level. if its low, you will experience Miss shifts of this nature. if the fluid level is sufficient, i recommend moving your inspection to the TCM(transmission control module). this is the control module that initiates the correct shifting intervals and it relays the actual shift signal to the shift solenoids located inside the transmission pan. if the module is malfunctioning, it will affect the shift patterns dramatically. If the module is in good condition, i would then move on to the actual shift solenoids themselves.

These devices preform the engaging of the gears within the transmission as stated above. if this device is not working or is malfunctioning, it will affect the way the transmission shifts. If you have not preformed a proper transmission flush and have not changed the filter for a while, it would help if this maintenance was initiated soon if possible.

Now, concerning the overheating issue. if the fans are running in a correct manner, this will most likely point to a faulty water pump or an faulty thermostat that may be froze(stuck in position not allowing proper water flow). the most common fix will be to preform a radiator flush. during this flush, if you notice a rusty water flow and tiny metal fragments running out the radiator, this will confirm extreme radiator damage to the inner coils and it will have to be replaced or rebuilt. I would recommend flushing the radiator and testing both the water pump and thermostat for there operational value.

Please rate and god bless:)


Apr 27, 2009 | 2000 Buick Century

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