If you have had any parts replaced on your cars cooling system (radiator, waterpump, new hoses, ect) then there is a chance that your cooling system has air trapped in it and this could make your cars cooling system operate poorly, or in worst cases minic the symptoms of a cracked head.
So BEFORE you spend thousands of dollars at the mechanics having this done, try this and see if your cooling system operates normal (temp stays within normal , does not get hot or overheat).
Step 1: Things You Will Need
Spill free funnel ($20.00 on Amazon.com)
Rag to wipe area clean
Time and Patience
Open your radiator cap, insert the angled peice of the spill free funnel into the correct cap for you car, then the main peice of the funnel on that, Make sure that you have all conections on sung so that there are no leaks.
YOUR CAR SHOULD BE OFF, DO NOT START YOU CAR YET!!
NOW you can start you car.
Sit back and watch this happen while enjoying a cold one, cuase in order to fully Burp your system the engine has to go through SEVERAL COOLING CYCLES........
I gave it the standard hour of running, if you still see air bubble comming out after that, check your overflow tank and make sure it has coolant in it. If it does not add some so the level is at the HOT line (becase you have now been running your car for awhile now).
The bubbles should stop and when it does turn your car off.
Take the funnels cap off of your radiator and put your cap back on, use the rag to wipe any coolant off of your car.
Now when you drive your car you should see a big differance in how it cools your engine. If you are still getting high temp readings you might want to check to make sure that your thermostat is working and replace it if needed.