Quote:
Originally posted by stephenson
Not likely can be waterpump.
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The water pump was the problem on my 84 300TDT. Similar situation to diesel don's. Would run ~90-100something driving, but when idling, the temps would go all the way to the top of the gauge. Fluid was flushed, T-stat changed, hoses and cap checked, etc. Finally replaced the water pump and that fixed it. Took me quite a while, so not something I could've tackled away form the garage.