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Originally Posted by eugene4282
hey everyone i have a 2003 impala 3.4L that keeps running hot on me. Ive changed the thermostat, coolant temp censor, even the gaskets and it still overheats!! can someone please help? 
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what about the coolant pressure cap....no pressure and you cant pump air bubbles...you have a water pump....
also if exhaust gases are shooting into the coolant ,,bad head gasket etc...you get the same problem.
possible the cat is getting restricted...losing power?