1% chance your fan belt is loose or slipping.
Correct as needed.
5% chance the lower radiator hose is collapsing
when hot and high rpms. With the engine hot
rev the engine with your left hand while watching
the lower hose. If it collapses in, you've found the
problem. Fix accordingly. If the hose is OK then
90% chance that your radiator is plugged up.
When was the last time you removed it and
had it professionally cleaned and rodded out?
Its not difficult to do. Pull the shroud, pull the
hoses, and the radiator. The take it to the
radiator shop. $50 should do the trick.
When reinstalling read up on the Gano filters
on TigersUnited.com and install one along
with new upper and lower loses.
Last 4% chance is the other items like stuck
thermostat, water pump, black enamel paint
(no radiator paint) on the radiator, etc
Dave Johnson
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