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Discussion Starter · #1 ·
any advice 00 bmw 318i Constantly having the same problem, Otherwise car is fantastic...

Ok , you know the coolant light on the dash, the one that tells you when you need to get coolant put into the car...First time it happened stuck coolant into the radiator, Light goes out, 2 months later same light back on again, Fill up coolant again, few days later no coolant left in the car, take it to bmw, The pressure test the radiator etc, Conclude it was a crack in the radiator cap, Replace cap, Ok car is now fine for a good 4 to 5 months, light comes on again. Fill it up with coolant. Light goes out. Come out 2hrs later to find a swimming pool of coolant under my car, Take it to the dealership, its there for a few days in which the replace the radiator, Car is good again for around 6 months. Back in december same problem as a result i had to go to my relations house in an opel for the new year, they replace the radiator and some sensor, cars ok again, Now the problem is back again, they have replaced the sensor thing again, and they also found an excuse to replace my battery, which is kinda good coz i'm putting in a new sound system, Car was fine again, and now i'm back to square 1 again, 10 days after they replaced the sensor...Coolant light on again...

Sorry about the long drama, Any Advice on what i can do,

Thanks
 

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bimmerireland said:
any advice 00 bmw 318i Constantly having the same problem, Otherwise car is fantastic...

Ok , you know the coolant light on the dash, the one that tells you when you need to get coolant put into the car...First time it happened stuck coolant into the radiator, Light goes out, 2 months later same light back on again, Fill up coolant again, few days later no coolant left in the car, take it to bmw, The pressure test the radiator etc, Conclude it was a crack in the radiator cap, Replace cap, Ok car is now fine for a good 4 to 5 months, light comes on again. Fill it up with coolant. Light goes out. Come out 2hrs later to find a swimming pool of coolant under my car, Take it to the dealership, its there for a few days in which the replace the radiator, Car is good again for around 6 months. Back in december same problem as a result i had to go to my relations house in an opel for the new year, they replace the radiator and some sensor, cars ok again, Now the problem is back again, they have replaced the sensor thing again, and they also found an excuse to replace my battery, which is kinda good coz i'm putting in a new sound system, Car was fine again, and now i'm back to square 1 again, 10 days after they replaced the sensor...Coolant light on again...

Sorry about the long drama, Any Advice on what i can do,

Thanks
E 46 3 series is famous for its expansion tank(the one under the cap) blow ups.

I had mine changed 2 weeks ago.
My specialist told me its a very common thing, the expansion tank blows where it was bolted together.

A good shop will find where the leak is right away by using the pressure tool.
 

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Discussion Starter · #3 ·
I know, but i've had the expantion tank replaced about 3 times, and a load of hoses, and electronics to do with it also, problems back again
 

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bimmerireland said:
I know, but i've had the expantion tank replaced about 3 times, and a load of hoses, and electronics to do with it also, problems back again
Not to be smart, but can you find a new mechanic/ dealer? Are you paying to replace the same parts again & again?
 

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I'm not sure I understand your complete repair history, but mine is that when a radiator part fails due to age all the parts and hoses should be replaced. I did mine piecemeal, becuase I do the labor, and in the process found out that none of the old parts (radiator, tank, bracket-to-tank, or hoses) will come apart and go back togather again without leaking.

I suggest that you get the engine and radiator really clean so you can see where it is leaking. Then fill it with water and check for leaks -- not just a puddle on the floor. The parts are not expensive and the labor is not too difficult.

All the parts are mostly clipped together. You need a torks head socket for the little screws. Remove the air intake and then keep in mind that the fan comes out first and then the expansion tank braket (which connects to the bottom of the expansion tank) has a peg on the right side (as you face the car) that you rotate out by turning the bracket to the left side of the car (as you face it). Al the other clips and screws are obvious when you inspect them.

Old hoses may not come off without a lot of hammer-taps but as I understand it all your hoses are new so they should come off after you lift up the circlip. If they aren't new, replace them now.

I suggest you solve this or at least identify the problem without the dealer's advice. It isn't right the way you have to turn over your car for the same fix again.
 

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Discussion Starter · #6 ·
thanks,
So your saying clean my engine thouraghely, Whats the best way to do this, I don't wanna damage anything else,

Then check for leaks, and when i find the problem, just buy all new parts and fit them or instruct the dealer to do so...

Thanks Again
 
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