OUR 2006 BMW 530XI KEEPS OVERHEATING.WE REPLACED THE THERMOSTAT AND IT'S STILL OVERHEATING. THE MECHANIC WAS GOING TO BLEED THE SYSTEM BUT I DON'T KNOW IF THAT WILL HELP.DO YOU THINK IT'S THE WATER PUMP OR DO THEY NEED TO DO A RADIATOR FLUSH? APPARENTLY SOME CRITTERS BUILT A NEST BY THE RADIATOR BUT THEY PULLED ALL THAT OUT.I DON'T KNOW WHAT ELSE TO DO AND I'VE BEEN W/O A CAR FOR 4 DAYS NOW.WOULDN'T A DIAGNOSTIC TEST TELL YOU AT LEAST SOMETHING? THEY SUPPOSEDLY DID THAT BUT THOUGHT IT WAS THE THERMOSTAT. THANKS,MICHELLE
Re: OUR 2006 BMW 530XI KEEPS OVERHEATING.WE REPLACED THE...
2006 bmw 530xi have a electric water pump (next to the thermostat). Common to go bad. There should be no heat in the car and "overheating" pops up. Electric water pump $495.00
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install cooler running thermostat and drill 2 hole 180 degrees apart in the thermostat. bleed system twice. make sure you get all the air pockets out of the system.
one of two things the thermostat maybe sticking. the other is that is takes ford awhile to bleed all the air out of the system. i would try bleeding the coolant system, and while doing this the fan should engage as well.
Who determined that the water pump and radiator needed to be replaced? If it was the dealer or an independent garage, bring it back and tell them they guessed wrong. You paid to have the problem fixed and they need to stand behind their work.
This is a problem that's hard to diagnose without being able to check a lot of items and ask questions, but the obvious things to look for if you have a new radiator and water pump (and hopefully a new thermostat) is for air in the cooling system which keeps the coolant from circulating. Also check to see that the cooling fan(s) are operating properly.
the thermostat (on bmw replacement parts) have an arrow that has to be installed facing upward.if this was done correctly,to bleed the system usually there is a bleeder screw on or near the expansion tank(where you fill the coolant) and possibly on the thermostat housing. i would recommend opening both bleeders and keep filling the system with coolant closing the lower bleeder first and then allow the rest of the air purge from the other bleeder screw.make sure the coolant stays full and be patient you can't wait TOO long.
the problem could also be your radiator cap and you need to make sure that you don,t have an air bubble in the system you also have to have the right amount of anti freeze in it but try the cap first seems so simple but it is a good possibility. hope this helps
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