Overheating

2000 CHEVROLET IMPALA
90,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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J.D. GOODMAN
  • MEMBER
  • 1 POST
I've out in a new thermostat toped it off with engine coolant checked all the hoses. it's still running hot..
Oct 21, 2020 at 3:10 PM
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ASEMASTER6371
  • Experienced Mechanic
  • 52,796 POSTS
Good morning,

Make sure all the air is out of the system. Air in the system will make it run hot.

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

Are the cooling fans working when it heats up?

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

The radiator can be clogged internally and limiting circulation throughout the engine.

https://www.2carpros.com/articles/how-a-radiator-works

I attached a wiring diagram of the fans for you to view. Check the fuses I circled for power on both sides.

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

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Roy

Removal Procedure

Caution:
An electric fan under the hood can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any under hood electric fan.
To help avoid personal injury or damage to the vehicle, a bent, cracked, or damaged fan blade or housing should always be replaced.

Important: If abnormal noise or vibration is felt from the engine compartment, inspect and clean any foreign material from the cooling fan blades.

1. Turn the ignition off.
2. Remove the cooling fans with the cooling fan shroud. Refer to Fan Shroud Replacement.
3. Firmly grasp the cooling fan. Turn the drive plate nut in order to disengage the fan retainers.
4. Remove the cooling fan.

Installation Procedure
1. Install the cooling fan.
2. Firmly grasp the cooling fan. Turn the drive plate nut in order to engage the fan retainers.
3. Install the cooling fans with the cooling fan shroud. Refer to Fan Shroud Replacement.
Oct 21, 2020 at 9:15 PM
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Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.