Overheating

Tiny
ALERO925
  • MEMBER
  • 2001 ALL OTHER MAKES ALL OTHER MODELS
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 45,000 MILES
Constantly overheating
repaired hoses, thermo stat, coolant reservoir
now they are saying it might be electrical
Sunday, July 19th, 2009 AT 11:45 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

The engine can overheat due to a number of reasons.
It could be due to having low coolant, a stuck closed thermostat, bad radiator, faulty water pump, contaminated coolant or having blockage in the cooling system. It can also overheat due to inoperative cooling fans.

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

Do you know if the cooling fans are operational?
Inoperative cooling fan will lead to overheated engine. The cooling fans might not work due to a bad fan relay. It can also be due to bad wiring or malfunctioning fan motor.
Checking the relay should be the first step.

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

Keep in mind that a faulty temperature sensor will also prevent the fan from turning on.

https://www.2carpros.com/articles/how-a-coolant-temperature-sensor-works

Please let me know if you have any questions.
Thank you.
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Thursday, November 18th, 2021 AT 9:03 AM

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