Engine Temp Issue

[OnlyAnSE]

So I just replaced my Thermostat because my engine temp was fluctuating into the high ranges. It sits right below 200 which is optimal and then it starts creeping up and starts jumping around in the high heat ranges even after the swap. The heater is pushing out warm toasty air when it is at the 200 mark and as soon as it bumps up a little it turns cold as ice. Coolant is full, I know the thermostat is fine and maybe it takes a little break in time but i wouldn't think so. Any info or possible troubleshoots on this would be greatly appreciated

[RJolly87]

Are you sure that the coolant temp is the problem? It could be a flaky sensor or stepper motor in the cluster also.

[OnlyAnSE]

well it may be a sensor possibly since the heat turns off as soon as it creeps over 200 but im not totally sure how to check if that is indeed the problem.

[2003 SSEi]

you have an air pocket, if the temp increases and the heater goes cold....

bleed out the air from the thermostat housing

[OnlyAnSE]

Should i use the little bleeder screw and put the nose of the car on a slight incline? Is there a better way?

[2003 SSEi]

the bleeder screw is the correct way to bleed off the air.

[OnlyAnSE]

Alright and last question i have seen so many different procedures on the bleeding process i dont know which one to use. Could you tell me the proper steps to do this for our cars?

[2003 SSEi]

http://www.pontiacbonnevilleclub.com/fo ... f=53&t=159

[nos4blood70]

Definitely point the nose up if you can. Should help expel the air quicker.

[OnlyAnSE]

It was a huge air pocket tool about 15 mins just to eliminate air and tipoff the radiator. Thanks for everybody's help!

[nos4blood70]

Glad you got her working.