My engine is overheating how can I fix it?

Tiny
KIZZYSOREAL
  • MEMBER
  • 2012 BUICK LA CROSSE
  • 91,234 MILES
Changed my reservoir and three days later gauge not moving. Sensor said heater shut off due to engine overheating, but fan comes on. No smoke under hood.
Friday, November 24th, 2017 AT 1:40 PM

6 Replies

Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
After the vehicle sits overnight, check the coolant level. It is critical that the cooling system is bled (after repairs) to be sure to remove all of the air that is trapped in the system during the refill process.

This guide can help us fix it

https://www.2carpros.com/articles/engine-overheating-or-running-hot

One way to "bleed" the air from the system is to disconnect the small hose(s) that connects to the top of the coolant reservoir during the filling process be sure to raise the disconnected end of the hose above the level of the top of the reservoir. Air will move to the highest point in the system (the raised small hose)during the refill, thus escaping and eliminating air pockets which can cause an engine to overheat.
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Friday, November 24th, 2017 AT 6:24 PM
Tiny
KIAHNEAL
  • MEMBER
  • 1 POST
  • 2007 BUICK LA CROSSE
  • 3.8L
  • 4 CYL
  • AUTOMATIC
  • 100,000 MILES
My car is trying to overheat. I changed the thermostat and replaced the fluid. There is also a loud sound coming from the left side of the engine. I do not know where to go from here.
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Monday, January 4th, 2021 AT 1:39 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Trying to overheat? Please explain.

Does it run hot?

Did you check coolant level? Make sure the level in the radiator is correct.

What type of noise do you hear in the engine? Is it a knock?

Roy

https://www.2carpros.com/articles/engine-cooling-system

https://www.2carpros.com/articles/symptoms-of-a-bad-water-pump

https://www.2carpros.com/articles/how-a-radiator-works
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Monday, January 4th, 2021 AT 1:39 PM (Merged)
Tiny
ABAR
  • MEMBER
  • 1 POST
  • 2005 BUICK LA CROSSE
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 111,000 MILES
My car has been overheating I replaced the elbow tubes, which seemed to help the issue but did not solve it. I also changed the thermostat and I noticed the hose going to the thermostat was dry along with the housing. I'm not an expert so I'm not sure if that is normal after the vehicle has sat for a couple of hours. Could it be an issue with the water pump or radiator?
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Monday, January 4th, 2021 AT 1:39 PM (Merged)
Tiny
JOHNNY G.JR
  • MECHANIC
  • 320 POSTS
Top off cooling system and have it pressure tested first, a tester can usually be borrowed from an auto parts store or rented for a small fee
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Monday, January 4th, 2021 AT 1:39 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
It could be the cooling fans are not working, here is a good guide to help you do some testing and checking.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Please let us know what happens.

Best, Ken
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Monday, January 4th, 2021 AT 1:39 PM (Merged)

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