Quote:
Originally Posted by t walgamuth
water pump impeller could be freewheeling on shaft too.
also could have air in system.
radiator could have plugged fins. washing from back to front with a good blast of water can do a good job of clearing it out.
tom w
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Not the water pump.
Unlikely that air would cause such a rise in temp unless it's a massive amount.
Agreed on the radiator. They get hopelessly clogged with debris over the years causing a massive reduction in airflow.
Washing from back to front in the vehicle is useless. The radiator must be removed from the vehicle and a powerful condenser cleaner must be used on the fins together with compressed air. It's a lengthy procedure because the spaces between these fins are very narrow.
Hold the radiator up to the sun and peer through the fins.........you'll see the problem immediately.