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Old 06-15-2011, 11:07 PM   #1
HV Fam Wagon
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Default antifreeze leak at sensor

I drive a 2004 LW300 and she has been leaking a little bit of antifreeze. I hosed the bottom side a few days ago and look for any fresh leak this afternoon.
Antifreeze is leaking at a place I don't expect - the crankcase sensor, right underneath the oil filter housing. The sensor does not seem to have any washer or gasket.
The sensor has this marking "Bosch 0261210 183", and "38551". I couldn't find it at SaturnParts.com.
Has this happened to anyone? Is it necessary to change the sensor? Is it necessary to drain the antifreeze from the radiator before fixing the leak?

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Old 06-16-2011, 04:59 PM   #2
midway
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Default Re: antifreeze leak at sensor

If it is the sensor below the oil filter housing I think that is the crankshaft position sensor and it should not leak antifreeze. You must have a leak somewhere else and it is getting on that sensor.

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Old 06-17-2011, 12:02 AM   #3
HV Fam Wagon
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Default Re: antifreeze leak at sensor

Thanks MidWay.
I look all around the crankshaft sensor, but I don't see any signs of coolant above it. All underside of nearby hoses are dry and dusty, but no suspicious antifreeze leak.
Any suggestions, anybody? I hope it's not the head gasket.
Thanks

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