Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I changed the radiator and thermostat completely filled it with coolant and it is over heat.

share|improve this question

closed as unclear what you're asking by Gabriel Mongeon, Move More Comments Link To Top Dec 18 '13 at 21:12

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

When you say "no heat at idle" are you talking about not getting any heat to the cabin of the car, or that the radiator is not getting hot? – mac Dec 12 '13 at 15:23
not getting any heat to the cabin of the car – JACK D Dec 13 '13 at 16:17
Welcome to the site: please add additional content and context to your original question text directly. That will help us to help you. – Bob Cross Dec 17 '13 at 22:29

Your engine does not have bleed screws on the radiator cooling system. To fully top up your system, fill the radiator with coolant. Run the engine at about 2500 RPM for a couple of minutes. With a large wet rag, soaked in water, to protect your hands from any steam, slowly but slowly undo the coolant filler cap. Top up again with coolant. Do this several times until it needs no more topping up.

One Old Hands trick we use in the motor trade is to remove a component such as the coolant temperature sensor. The choice of component would be: Below the engine thermostat housing but high up on the engine block. As you fill with coolant, air will be pushed out of the system through the hole for the removed component. Once coolant starts to come out of the hole, refit the component. This trick will remove most of the air trapped in the block and get hot water more quickly to the thermostat bulb to make the final bleeding easier and quicker.

share|improve this answer
When you say "Below" the thermostat, do you mean "after"? The thermostat on my car, for example, is at the lowest height of any component in the cooling circuit. Does the trick just not work in that case? – Josh Caswell Dec 12 '13 at 20:22
The higher up on the engine the better. The idea behind it is that air will rise to the top of any container, but the thermostat will trap air below it. By venting high up on the engine most of any air is released. – Allan Osborne Dec 12 '13 at 21:19

Not the answer you're looking for? Browse other questions tagged or ask your own question.