My van overheats how do i bleed my radiator

You might have air lock in heater matrix when bleeding it put heat on full an nd let it get to temperature and bleed it then ..I had a Volvo f12 globetrotter that would overheat coming up Mont blanc at minus 20 outside temperature it was radiater changed perfect after

Un screw rad bleed . hose in radiatior . . loosen hoses and vent out . You can buy pressure pump to couple on top of radiator

could be the fan temp sensor or the van but sensors cheapest

there can be air pocket somewhere you need to bleed system properly. rais the front let is idle bleed it thru bleeding screw. be sure that bubbles are over.

air pockets prevent coolant travel inside system. so it may not reach to radiator, or cabin heater or both.

Hi,
The bleeding nipple would be near the water pump rad hose inlet and beneath the thermostat valve cover.
Bleeding is easy, just fill up the radiator and the reservoir w/ coolant run the engine for 5 min and open the bleeding nipples! or Just fill up the radiator before u start the engine, early morning, run the engine for 5 min. untill the thermostat valve opens, open the radiator cap( use a wet rag ), carefull not to open it instantly! Fill up the radiator while the engine runs, add coolant while u slightly reving up the engine.
Do these and open the heater to maximum, air might be inside the core too!
Hope that helps u out!

There's a bleed screw located at the bottom of the radiator. Open screw let fluid run out of radiator. Fill radiator with water run vehicle. Repeat above steps until fluid is clear. Use a coolant system flush. Refill system with appropriate amount of coolant and water.

If your gmc safari cargo van overheats when the ac is on, your radiator and cooling system may be clogged and not working at peak efficiency.

Make sure your radiator cooling fan goes on as soon as you turn the a/c on.

did u bleed the air out of the cooling system? if not dop this procedure and recheck for problems.
The generic method of bleeding air from the cooling system is to use a floor jack and raise the front of the car as high as poss, then fill the coolant recovery tank full and run the engine until it just starts to overheat, high end of normal zone on gauge, then shut the engine down and run cold water over the radiator core, this will self bleed the system and the coolant will be pulled from the recovery tank, repeat as necessary, never let the recovery tank run dry or more air will be pulled into the cooling systeml , if it still overheats then you need to have the head gaskets checked with a gas analyzer for hydrocarbons present in the radiator or recovery tank

It sounds to me like your coolant level is too low. Check that first. If it is low top it up and let the van run with the heater on. You will probably have to add coolant more than once to get the system full. If the coolant level is full then you need to replace the thermostat. If it doesn't open then coolant can't circulate through the radiator and cool off. Hope this helps.

Hi,

I had the same problem with my 1993 Liberty LX. Remove the thermostat (located inside bottom radiator hose engine connection - take the connection off and thermostat is inside). Reassemble (minus thermostat), reconnect bottom hose. Slowly (very, very slowly) refill the radiator and remove the bleed plug ( located beside the top hose connection to the radiator - a black square plug with a phillips head cross in the middle). When the radiator is full and clear water (no air bubbles) is coming out of the bleed point, replace the bleed plug and then the radiator cap.

Run the engine for five minutes (approx) or until normal engine temperature is reached. Allow the engine to cool down and recheck the water level - fill if necessary ensuring that the bleed plug is open and clear water is coming out of that point. Replace Bleed plug and then radiator cap. Run engine for five minutes (approx) and then test dive. If the engine overheats keep filling the radiator until there are no air bubbles coming from out of the bleed point.

This fixed my overheating problem. Good luck and safe motoring.