I have 85 FJ60, ZZ4 350, 700r4 auto trans. Alum. 3 eow radiator with electric fan, 160 deg thermostat. runs hot with ac on in warm weather.....should I fo back with the fan and shroud ?? Help...
Running hot (1 Viewer)
- Thread starter CabinetMan1
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This is really a ZZ4 350 question, not a land cruiser question. Not many people here, if any, have that engine in their cruiser.
But for any engine of any size, if the engine gets too hot on hot days, that’s the sign of an inadequate cooling system.
One or all of the following components:
1. Radiator
2. Radiator fan
3. Water pump
4. Head gasket integrity (no blocked passages)
5. Radiator fan shroud
6. Viscous fan clutch when using a mechanical fan
7. Thermostat (a cooler thermostat won’t help in hot weather)
Also engine air-fuel mixture. If the A/F mixture got jacked and is too lean, engine will run hot.
But for any engine of any size, if the engine gets too hot on hot days, that’s the sign of an inadequate cooling system.
One or all of the following components:
1. Radiator
2. Radiator fan
3. Water pump
4. Head gasket integrity (no blocked passages)
5. Radiator fan shroud
6. Viscous fan clutch when using a mechanical fan
7. Thermostat (a cooler thermostat won’t help in hot weather)
Also engine air-fuel mixture. If the A/F mixture got jacked and is too lean, engine will run hot.
most definitely imo, regardless of what sort of engine you have. No electric fan that I know of can pull even half as much air as a viscous clutch.
tmxmotorsports
SILVER Star
What radiators do you have?
tmxmotorsports
SILVER Star
I ment radiator
I’m currently tearing into a 5vz 3.4 Toyota that overheated and cracked a head. There was a mismatched fuel injector on the exact cylinder that overheated and cracked the head. Coincidence.. I don’t think so.
Just throwing it out there ... air/fuel is important
Just throwing it out there ... air/fuel is important
