TSRM/MK3 Supra/Repair Manual
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CO/Cooling System — Troubleshooting, page 4

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Troubleshooting — MK3 Supra Cooling System, page 4
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Page text (OCR transcript)
TROUBLESHOOTING

Problem
Possible cause
Remedy
Page

Engine overheats
Alternator drive belt loose or missing
Adjust or replace belt
CH-3

Dirt, leaves or insects in radiator or condenser
Clean radiator or condenser

Hoses, water pump, water outlet housing, radiator, heater, core plugs or head gasket leakage
Repair as necessary

Thermostat faulty
Check thermostat
CO-8

Ignition timing retarded
Set timing
IG-20

Fluid coupling faulty
Replace fluid coupling
CO-6

Radiator hose plugged or rotted
Replace hose

Water pump faulty
Replace water pump
CO-6

Radiator plugged or cap faulty
Check radiator
CO-9

Cylinder head or block cracked or plugged
Repair as necessary