Have 1997 monte carlo, changed radiator, stays cool at idle, but when you drive it starts to get hot. can't fi

Question

figure it out. any suggestions please. frustrated!!!!

Answer 1

thermostat belts hoses and or water pump bad fan motor

Answer 2

Make sure a/c condenser isnt blocked, also make sure there is not an air block in the cooling system. Have your system pressure tested to check for an intake or head gasket leak

Answer 3

sounds like you did not open the bleeder s***w on the cooling line up by the intake and bleed out all the air in the system. it is a common problem. you have an air bubble.

Answer 4

did you change the thermosta ?. its is most likely stuck in the closed position. It a $10. part and takes 15 mins to change. follow the hose on top of radiator to the engine, where its connected thats usually where it is.  

Answer 5

In addition to above, Make sure coolant is at the right 50-50 mix. Antifreeze also raises the boiling point.

Answer 6

what type of fan blade sys. does it have? are you running the air when this happens? could be that one of your fans are not coming on assuming you have elec.fans. or the thermostst could be closing or sticking.ck your eng. heat sensors&a.c sensor that could be the little monster causing the trouble

Answer 7

Check the thermostat!