my z28 is overheating it has a new radiator but still overheats ,its fine for a little while then it just all of a sudden starts gettin hot but stays cool while driving on the highway,but as soon as i get off and stop at a light or something it just shoots up ! anyone have an idea of what it is , the coolant is full ,dosent leak,and i blead the air out of the system ?

 

check to see if your fans kick on while on the road. If not then thats your answer. If not then try your water pump or thermostat.

 

thanks they dont come on unless the i turn on the air conditioner

 

get the manual fan switch from slp because i am thinking your saying when you come to a stop it hits 230 deg if so all our cars do that. until you get the switch you can turn on your heater full blast

 

You seem to be having the similar problem i am having...
check out this post
http://web.camaross.com/forums/showt...3&goto=newpost

There are some suggestions on there on what you can do...
tomorrow i am draining the engine oil, tranny oil, and the coolant and adding new fluids and maybe install a air foil for the hell of it and ill let you know what the temperature difference is...ill probably throw in one of those
bottles that guarantee to drop down your temperature about 10 degrees...