Gateway Parts

I have a BMW 328i, It keeps overheating I have changed everything to do with the coolant system help?

I have changed the thermostat, fan clutch, gasket, and it still over heats, the hoses work fine and there are no leaks. I took it to discount auto parts and they used a computer check and it said it could be the fuel Sensor, could that be possible? also my air conduction does not work can that have anything to do with it Its a 1997 150,000 miles and the pump is fine, do you think it can have anything to do with the fuel

Public Comments

1. water pump would be the next thing to check. how many miles? what year? it may have gone bad
2. Did you bleed the air out of the cooling system after you replaced everything? If there is air in the system, it will make the car run hot and it will also affect the amount of heat you get from the heater. There is a small screw on the housing that contains the thermostat. You need to get the car up to operating temperature and then loosen that screw so that air can escape. Once only antifreeze comes out you need to tighten this screw. You can go to the E36 section of bimmerforums.com and find instructions on how to do this.
3. Im going to save you a trip to the hospital. DO NOT and i mean DO NOT open the bleeder screw when the motor is at operating temperture, i will throw boiling hot coolant all over you! at a COLD engine temp raise the front of the car slightly and with the vent screw out ADD coolant until all air bubbles removed and nothing but solid coolant comes out of the vent hole. this may take several trys. If the water pump is actually fine then make sure the auxillery fan in front of the radiator is working, it affects temp as much as the fan clutch. also, after bleeding turn the heat on max and heat the motor to operating temp, this will help the process. If you still are having problems, could be a warped head, cracked head, blown head gasket, leaking internally in the cylinders( do you have misfires when the motor is cold, then they clear up after the motor runs ahwile?) to check remove spark plugs from the motor and turn the engine over, if the motor spits out coolant then you have problems. do this after the car has set up over night. hope this helps P.S. the people at the discount auto parts stores arent mechanics. you should see the havec they cause the professional mechanics such as myself CERT BMW tech 4ys factory training