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Overheating

Tiny
MAJJJW6455
  • MEMBER
  • 2004 BUICK RENDEZVOUS
  • 3.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 100,000 MILES
My vehicle overheats while sitting, had new engine. After that replaced bad gaskets, new radiator, new sensor, new thermostat, new water pump, and bled air from coolant system, but still overheats.
Thursday, June 3rd, 2021 AT 4:09 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

Do the cooling fans work? Make sure they come on when the engine gets hot.

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

https://www.2carpros.com/articles/how-an-electric-cooling-fan-works

I attached a diagram for you of the system. Check for voltage to the fans when running and the engine is hot. Test the fuses in the diagram for power on both sides. When there is overheating at idle only, it is usually from lack of air through the radiator.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy

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Thursday, June 3rd, 2021 AT 6:14 PM

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