Coolant Leak

fzrider · 12-09-2015, 06:38 AM

I had a crack in the water pump, as is very common with these cars. I had an awesome service advisor at the dealer and she got it covered even though I was 1,800 mile past my warranty.

Thanks to everyone for their help.

Buttertits · 01-06-2016, 09:39 AM

Quote:

Originally Posted by timothy2001

My expansion tank was leaking at the seam, tough to diagnose as it was intermittent.

Replace the tank, very easy to do yourself and problem solved. Appears this is somewhat common so this is a likely source of your leak.

I am having this issue and have confirmed it is my expansion tank.

Anyone have a link to a procedure or DIY for replacing the tank?

BMSE92_Harry · 01-26-2016, 11:26 PM

Subbed

TheRealMccoy24 · 03-30-2016, 01:30 PM

Quote:

Originally Posted by Buttertits

I am having this issue and have confirmed it is my expansion tank.

Anyone have a link to a procedure or DIY for replacing the tank?

I too wouldn't mind referring to a DIY on this, it's extremely simple but better safe than sorry!

techwhiz · 03-30-2016, 06:38 PM

Quote:

Originally Posted by TheRealMccoy24

I too wouldn't mind referring to a DIY on this, it's extremely simple but better safe than sorry!

No real DIY on this one.
You need to remove the vacuum thing in front of the expansion tank bolted to the chassis then remove the hoses.

Not a big deal.

TheRealMccoy24 · 03-31-2016, 12:19 PM

Quote:

Originally Posted by techwhiz

No real DIY on this one.
You need to remove the vacuum thing in front of the expansion tank bolted to the chassis then remove the hoses.

Not a big deal.

Yeah easy stuff. Thanks

g9sBMW · 05-31-2016, 08:45 PM

My radiator ( replaced less than a year ago ) developed a leak at a cap

Anyone know the part # to order?

g9sBMW · 06-01-2016, 09:10 AM

Quote:

Originally Posted by g9sBMW

My radiator ( replaced less than a year ago ) developed a leak at a cap

Anyone know the part # to order?

Will look for a Coolant Bypass Cap that fits

jpregione · 08-10-2016, 08:51 AM

for those that had a leak in the expansion tank where was the puddle forming when you noticed it? yesterday my kid text me a picture of my garage with coolant everywhere, I stopped what I was doing (out driving) and checked for leaks but the only thing I saw was what looked like condensation dripping down behind passenger front tire. This morning watered down coolant all over the garage floor and the drop "origin" was behind the passenger front tire, like it was coming from behind the wheel well. I did a quick peak inside and cant see any coolant residue so figured I would check here while I drink my coffee

g9sBMW · 08-10-2016, 08:58 AM

The only time I noticed fluid from behind right passenger tire it was not Coolant but instead the green bug wash I use in the windshield pump reservoir.

jpregione · 08-10-2016, 09:11 AM

me too, but it's blue, and the green coolant reservoir tube is full so given the amount under the car this morning that isn't it. time to pull the bottom cover and see if I can see anything

trixdout · 08-10-2016, 11:25 AM

Quote:

Originally Posted by jpregione

for those that had a leak in the expansion tank where was the puddle forming when you noticed it? yesterday my kid text me a picture of my garage with coolant everywhere, I stopped what I was doing (out driving) and checked for leaks but the only thing I saw was what looked like condensation dripping down behind passenger front tire. This morning watered down coolant all over the garage floor and the drop "origin" was behind the passenger front tire, like it was coming from behind the wheel well. I did a quick peak inside and cant see any coolant residue so figured I would check here while I drink my coffee

I had a water-like leak underneath the car right inside of the passenger front wheel. I saw the frame wet and looked under the hood and noticed the white crust at the expansion tank.

After an extended period of idling, I noticed the coolant would seep all around the tank at the seam.

If you notice white crust (salt-like crap) all around the expansion tank on the side facing the engine, that means it is leaking.

christopherolney2008 · 08-10-2023, 07:30 AM

I’ve got a e92 2009 330d
Which has had a coolant leak 3 times in less than 2months & has gone to bmw garage every time to be fixed
Now it has leaked again but this time it has blown the radiator I’ve got proper bmw warranty that I pay every month & when I phoned them there answer was it was down to the quality of work at the garage & they won’t do anything any tips or help someone can give me I’m at the end of my tether

12-09-2015, 06:38 AM	#23
fzrider New Member 6 Rep 8 Posts Drives: 2011 335ix Space Grey Join Date: Mar 2015 Location: Salt Lake, UT iTrader: (0)	I had a crack in the water pump, as is very common with these cars. I had an awesome service advisor at the dealer and she got it covered even though I was 1,800 mile past my warranty. Thanks to everyone for their help.
	Appreciate 1 Quote

01-26-2016, 11:26 PM	#25
BMSE92_Harry Captain 73 Rep 811 Posts Drives: 08 335i coupe Join Date: Oct 2013 Location: Tampa iTrader: (0)	Subbed
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05-31-2016, 08:45 PM	#29
g9sBMW Lieutenant 23 Rep 517 Posts Drives: 2007 BMW 328i Join Date: Mar 2007 Location: Los Angeles iTrader: (8) Garage List 2007 328i Sedan [0.00]	My radiator ( replaced less than a year ago ) developed a leak at a cap Anyone know the part # to order? __________________ [2007 328i\|Black Sapphire\|Terra Leather\|6 MT\|Xenon headlights\|BMW Alarm\|Clear Bra\|Stainless Steel Pedal Pads\|Black Line Tails\|MTEC V3.0 Angel Eyes\|HUPER OPTIK 30 Ceramic TINT\|GPThunder Fogs\|LED License Plate mod\|Sport Shocks/Springs upgrade\|ZHP Shift Knob\|//M Dead Pedal\|Matte Black Grill\|Aluminum Strut Bar\|Cyba Air Scoops\|Rear Fog Switch\|Perforated Mtech Wheel\|Miro 935s\|Hankook v12 evo Tires\|BMW SSK]\| BMW PE
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08-10-2016, 08:51 AM	#31
jpregione Private 12 Rep 85 Posts Drives: 2009 E90 328i Join Date: Oct 2015 Location: San Tan Valley Arizona iTrader: (1)	for those that had a leak in the expansion tank where was the puddle forming when you noticed it? yesterday my kid text me a picture of my garage with coolant everywhere, I stopped what I was doing (out driving) and checked for leaks but the only thing I saw was what looked like condensation dripping down behind passenger front tire. This morning watered down coolant all over the garage floor and the drop "origin" was behind the passenger front tire, like it was coming from behind the wheel well. I did a quick peak inside and cant see any coolant residue so figured I would check here while I drink my coffee
	Appreciate 0 Quote

08-10-2016, 08:58 AM	#32
g9sBMW Lieutenant 23 Rep 517 Posts Drives: 2007 BMW 328i Join Date: Mar 2007 Location: Los Angeles iTrader: (8) Garage List 2007 328i Sedan [0.00]	The only time I noticed fluid from behind right passenger tire it was not Coolant but instead the green bug wash I use in the windshield pump reservoir. __________________ [2007 328i\|Black Sapphire\|Terra Leather\|6 MT\|Xenon headlights\|BMW Alarm\|Clear Bra\|Stainless Steel Pedal Pads\|Black Line Tails\|MTEC V3.0 Angel Eyes\|HUPER OPTIK 30 Ceramic TINT\|GPThunder Fogs\|LED License Plate mod\|Sport Shocks/Springs upgrade\|ZHP Shift Knob\|//M Dead Pedal\|Matte Black Grill\|Aluminum Strut Bar\|Cyba Air Scoops\|Rear Fog Switch\|Perforated Mtech Wheel\|Miro 935s\|Hankook v12 evo Tires\|BMW SSK]\| BMW PE
	Appreciate 0 Quote

08-10-2016, 09:11 AM	#33
jpregione Private 12 Rep 85 Posts Drives: 2009 E90 328i Join Date: Oct 2015 Location: San Tan Valley Arizona iTrader: (1)	me too, but it's blue, and the green coolant reservoir tube is full so given the amount under the car this morning that isn't it. time to pull the bottom cover and see if I can see anything
	Appreciate 0 Quote

08-10-2023, 07:30 AM	#35
christopherolney2008 New Member 0 Rep 11 Posts Drives: Bmw E92 330d coupe 245 2009 Join Date: May 2020 Location: Wiltshire iTrader: (0) Garage List 2009 e92 330d [0.00]	I’ve got a e92 2009 330d Which has had a coolant leak 3 times in less than 2months & has gone to bmw garage every time to be fixed Now it has leaked again but this time it has blown the radiator I’ve got proper bmw warranty that I pay every month & when I phoned them there answer was it was down to the quality of work at the garage & they won’t do anything any tips or help someone can give me I’m at the end of my tether
	Appreciate 0 Quote