Engine overheats on 2002 Oldsmobile Intrigue

Engine Overheats after driving 8-10 Miles. New T-stat, readiator. Excellent flow thrugh engine and radiator. Compression 175. Coolant system test holds 16 PSI 24 hrs. No water leaks or water in oil. No exhaust in coolant. Heater does not blow hot air when engine is hot? No air in system. What can be the problem? Thanks for any suggestion that will help pinpoint problem. help me correct the problem

by in Tucson, AZ on May 25, 2010
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1 answer 4 comments
ANSWER by , May 25, 2010
i wold be looking at a water pump. could be a circulation issue. Roy
COMMENT by , May 25, 2010
I forgot to mention new water pump installed. Thanks!
COMMENT by , May 25, 2010
with no heat it is either an air block or your new thermostat is bad. make sure you bleed the system well. there are 2 bleeder screws you need to use. Roy
COMMENT by , May 25, 2010
Thanks Roy: I located one bleeder screw, upper left radiator, where is the other one? Thanks again Glen
COMMENT by , May 25, 2010
above the water pump toward the front of the motor. there is a heater hose attached to the fitting. the bleeder is a 7mm bolt that you just loosen up and let air escape until coolant comes out. Roy