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Old 09-21-2014, 08:50 PM   #1
realaruns
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Post Fluid Leak at rear of the radiatior

Hi All,

I found a fluid leak on the road where i parked m car.
Moved it to the next spot and some fluid was leaking for sure.
I popped the hood and I saw a leak in one of the connector behind the radiator.
Its on the passenger side of the car.
I have attached some pics .
Can you help me with what that part is , any estimates on to fix it ?

http://imgur.com/a/UOf98
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Old 09-21-2014, 09:16 PM   #2
NumbaOneNewb
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coolant temperature sensor for the fan I believe. I don't know, I'm just guessing at random. someone here will know. everybody nowadays seems like a coolant expert since we've all been scared into doing a whole system refresh due to someone's paranoia
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Old 09-21-2014, 09:26 PM   #3
Hovs13
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The item circled in green is the coolant temperature sensor. The rubber washer is known to flatten and cause small leaks.


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Old Yesterday, 07:57 AM   #4
realaruns
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@Hovs13,@NumbaOneNewb - Thank you guys.

I started this morning and i saw the warning light for low coolant level.
I topped it of and need to see if it helps. I had topped off the coolant 2 months ago.

I assume its the coolant temp sensor.
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Old Yesterday, 08:28 AM   #5
LeMansteve
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This is a very easy fix. All you need to do is replace the green o-ring on the sensor. The o-ring is like $1 and might take 15 minutes to replace, from hood up to hood down.

1. in order to minimize spillage, do not remove expansion tank cap
2. unplug connector from coolant temp sensor
3. place rags, large cup or equivalent underneath the sensor to catch coolant that will spill out
4. remove coolant temp sensor
5. replace o-ring. lube o-ring with coolant to ease installation.
6. reinstall coolant temp sensor and re-attach connector
7. top-off coolant and re-bleed
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Old Yesterday, 03:43 PM   #6
e4603
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Green o-ring part number 13621743299
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Old Today, 09:03 AM   #7
realaruns
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@LeMansteve. Thank you for the writeup.
This seems simple enough.Let me give it a try .

@e4603 . Thank you for part #.
I have ordered one from bavauto.com

I will keep you posted how it goes.
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Old Today, 09:08 AM   #8
wasp9166
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fuel injector o-ring will last longer


13641437486 BMW fuel injector o-ring. Made of Vitron
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Old Today, 10:35 AM   #9
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Old Today, 02:55 PM   #10
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Quote:
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