READ ENTIRE GUIDE BEFORE YOU ATTEMPT.
Diagnosis: If your temperature gauge is on the fritz; creeping up higher, fluctuating up and down, or giving you the overall symptoms that your car is overheating.
Causes: Air can get into the cooling system when you replace anything within the cooling system. This includes, waterpump, thermostat, radiator, heatercore, and just flushing coolant period.
It's a good idea to try this procedure before you start replacing everything you think may be wrong. It is easy to do, and happens so often.
What You Need:
1-2 Gallons of 50/50 Antifreeze engine coolant
1 Gallon of Antifreeze (not premixed)/ 1 Gallon of water.
Funnels if your aim sucks
1. Jack up the front end of your car.
2. Take off your radiator cap .
3. Check fluid levels in the radiator and overflow tank and fill as needed (only fill to the full line, no more).
4. Start the car.
5. Turn the heat all the way up, and fan to full blast.
6. While monitoring your temperature gauge, let the car idle for...
6Cylinder: Could take up to 30min.
4Cylinder: Around 5-15min.
During this step you need to fill fluids if they get low (you are replacing the air, with fluid. The more air that is in your system the more coolant your going to need to add).
7. Do this step at your own discretion. For the V6 it can be a pain to burp. Revving the engine a bit may help get the air out. Just don't get to carried away with it or you'll have coolant all over the place.
8. Turn off the car, now you should let the car sit overnight.
9. For the next 5 days, check your coolant levels in radiator and overflow tank and fill them as needed before you drive.
*You may need to repeat this process a few times depending on how well you've burped the car, and how much air is in the cooling system. You will most likely need to let the car completely cool off between burps, with radiator cap off. So, might as well let it sit overnight after a few burps. Burp again in the morning, and should be good to go.
*To know if you are getting the air out, you will usually see some bubbles coming from radiator fill hole.
*DO NOT TAKE OFF RADIATOR CAP UNLESS THE ENGINE HAS COOLED ALL THE WAY DOWN OR YOU WILL GET SPRAYED WITH HOT COOLANT.
Credit goes to Silvertune, Jaloosk, and Google.
Let me know if there are any mistakes in the write up.