overheats?

1984 PONTIAC TRANS AM
11,000 MILES • V8 • 2WD • AUTOMATIC
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1984 Pontiac Trans Am v8 5.0 305 mileage: 77,000. I put new manual transmission, new carburetor, new thermostat and radiator with hoses. When I drive, I feel heat coming in where the stick shift knob is, on the instrument panel, I have radiator arrow coming from 220 to 240, and then it climbs over. What is a possible cause for such a thing? What can you tell me where to look? No leaks.
Oct 19, 2010 at 10:42 PM
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First check the radiator temperature with a separate temperature gauge. This will double-check your dash gauge. Remove the thermostat and test in a pan of hot water. It may be faulty. Check for exhaust in the cooling system. (Blown Head Gasket).
Oct 19, 2010 at 10:45 PM