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Sudden overheating

J

jeff jones

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When I last had my 4.3 volvo o

When I last had my 4.3 volvo out about five months ago the temp ran a steady 140-150 degrees.I took it out yesterday and the temp shot up to 220 in about five minutes.My question is can an impeller fail without any warning or could this just be a bad thermostat or something else?Any ideas are appreciated..
 
"Yes, Impellers can suddenly f

"Yes, Impellers can suddenly fail. Could also be a stuck thermostat. Sometimes it's just something blocking the water intake screen."
 
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