If E31 is getting hot, Growing List to check! (archive)

- Check Guage for proper function.
- Radiator Cap, later recall replacement
- Anti-Freeze Fluid Level & age of coolant
- Check Belt for condition
- Check Belt tensioner
- Fan - Clutch working?
- Fan - Blades damaged?
- Fan - Thermo switch not working.
- Thermostat - Verify in Boiling water.
- Radiator - Leak - corrosion
- Hoses - Leaks - cracks - hard - plugged
- Water Pump - Leak corrosion debris or Noise.
- Front Air Dam - attached properly - No Debris
- Upper and Lower baffle/trays - secure
- Engine timing - Computer - Chips
- Inside engine Cooling channels clogged -rare
- Blown Headgasket - special fluid check,& water in oil
- Cracked head or block, requires special testing.
- Aftermarket additional fans??
- Aftermarket water spray in front of radiator
for Extreme conditions for a short time.

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