why is my 01 runnig hot i put new tranmasat still get's hot on 2001 Pontiac Bonneville

it just started gettin real hot why? I put new thramoasat iin and it's still getting hot

by in Philadelphia, PA on June 20, 2011
1 answer
ANSWER by on June 20, 2011
There are many reasons for overheating. For starters - did you purge the air out of the cooling system after installing the thermostat? If not, the coolant can boil over from the presence of air pockets. Is the cooling fan working? Do you have good coolant flow?