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Dead Parrot · 07-17-2015, 08:07 AM

When you mentioned the PO swapping from a diesel, I wonder if the PO had budget issues. That radiator could have been the "cheapest thing available" so the PO could get a truck that moved under its own power. Your initial thought on the water pump impeller is worth checking. If the current engine was a salvage yard pull, no telling what shape the pump is in.

My truck came with a factory fan clutch. A lot of trucks lost them in the 70's and 80's due to flex blade fans being sold as a way to gain HP and improve gas mileage.

07-17-2015, 08:07 AM	#18
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,495	Re: Engine gets hot at idle When you mentioned the PO swapping from a diesel, I wonder if the PO had budget issues. That radiator could have been the "cheapest thing available" so the PO could get a truck that moved under its own power. Your initial thought on the water pump impeller is worth checking. If the current engine was a salvage yard pull, no telling what shape the pump is in. My truck came with a factory fan clutch. A lot of trucks lost them in the 70's and 80's due to flex blade fans being sold as a way to gain HP and improve gas mileage.