maniacaimes

I have a 93 F150 5.0 4WD that is over heating and i cant figure out why. It overheats with no thermostat, there is no water in oil, and water pump is good. Does anyone have any advise?

tareed94

Might be a stupid question but have you tried changing the coolant? Is the radiator clogged? Like I said may be stupid questions but just trying to offer suggestions.

alsatropine

iTrader: (2)

I would go with either a clogged radiator or possibly a bad clutch fan. See if you can free spin the fan . If you have little or no resistance it can cause your truck to overheat

maniacaimes

its not those but i think it might be the lower rad hose closing up since its old and kind of soft

Marc D

Yes, that's very common for the hose to collapse under return flow to the block.Depending on your engine the lower radiator hose should have a stainless steel spring inside. Some newer replacements don't have them but I always try to buy one with it.

maniacaimes

thats not the problem. someone told me it could be caused by a clogged oil filter. is that possible?

JCR 56

Clogged oil filter should not have anything to do with it.

Marc D

If the oil filter was clogged you would have a low oil pressure light or code. Most oil filter have a built in bypass spring anyway. The other possible reason could be your have a lean fuel mixture. This will run the motor hotter than normal. This can be caused by partially clogged fuel injectors, a blocked fuel filter or a weak fuel pump. I'd pull one of the plugs and see if it is white around the ceramic insulator. It should be dark power brown.
Also check your timing. If it's too far advanced this could be causing your problem.