My car overheated and we found the problem it was a heater hose had burst so we blocked it off but it still wouldnt go down so we pulled the thermostat out and also bled it that worked to get home but when i drove it the next day and it overheated straight away we bled it again but that didnt help and we saw that it had no water running through it. would this be because of the heater hose that burst and is now blocked?? could that be stopping circulation of water or do i need a new water pump ??
I am not sure what you mean when you say you blocked it off. You must have the water so it will circulate through the system and that means you need to splice the heater hoses together so the water will return to the radiator and through the motor. You could have a heater hose that is separated inside and not show. Did you check the thermostat to make sure it is operating. It sounds as if it is shut and needs replacement.
SOURCE: OVERHEATING!!!!!!!
ilragatzzo78 is 100% right. I had the same trouble with my 318ti. It took a lot of sitting on the side of the road. The only solution is time. Bleed, bleed and re bleed. You can bleed it through the bleeder screw on top of the radiator (plastic screw). I didn't know about the angle part, but thanks for the idea..
Nick
SOURCE: 1994 bmw 318i
Where is the water pump on 94 BMW 318, Is it behind the Fan or a seperate unit. is it easy to replace?
SOURCE: 1997 bmw z3 conv. 1.9 overheated, changed
hi jasso, I would recommend checking the water pump if you see no flow in the radiator. Make sure when you fill up the cooling system, that you fill it cold, and that the vent screw in the radiator is loose. fill system until fluid comes out the vent screw. tighten the screw, start the car and have someone run at 1500rpm and check for flow.also, make sure that you have your temp setting full hot and blower on middle speed so that you don't trap air in the heater core.
SOURCE: 325i BMW, 2003 (Automatic) Fuel Pump/Filter or
your camshaft position sensor may be going bad. usually with an old car it tend to go bad. The top of sensor can be covered or gumed up with grease, oil, dirt and cause it not to detect the flywheel turning. Camshaft sensor send single to your DME to deliver fuel and sparks to you engine. If camshaft sensor goes bad it will seem like your fuel pump and ignition coil is bad even-though they are good. Faulty camshaft sensor may caused you to have this issue and problems such as sometime it run good and all of sudden it shut off, sometime its start good and others time is doesn't start. Once the sensor goes bad, the car will not run. There are two Sensor one for the fuel and one for the sparks, I would replace both sensor because soon or later if it will go bad, it will leave you stranded although if you replace one you might as well replace the other. Check the coil and test using the light or volts tester to see you getting power to the coil, next check if your fuel pump is working, fuel pump will not stay running unless the sensor sense the flywheel is turning from your camshaft sensor. next time when your car does not start, check if you getting spark and fuel. Both sensor will cost you around 130 bucks. assuming your DME, fuel pump, coil, wires, etc... is working. keep me update and I will try to walk you through. btw stop by at any auto part store and pick yourself up Haynes auto repair book for your car, its a great tools and investment to have for your next repair work if you plan to keep your car and get to know the heart of it. good luck and i hope that help some.
SOURCE: bmw 318i e46 overheating. took head off an had
the fan is the problem, try replacing the temperature sensor that the fan connects too
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