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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!

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Old Sat, Feb-09-2019, 06:38:28 PM   #1
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Default Oil temperature sensor

Just picked up an 04 SMG to play around with and restore to some glory. Noticed the oil temperature hasnít been reading since I got it. I just did an oil flush and change last weekend, so wonít be doing that again for a while.

Iíve got an oil temp sensor to replace the old one. My understanding is it is by the oil filter housing. Does anyone know when I remove the old sensor, if oil will come out of the hole? If so, I really donít want to do an oil change again.

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Old Wed, Feb-13-2019, 11:52:35 PM   #2
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Default Re: Oil temperature sensor

Oil temp sensor is integral with the level sensor at the bottom of oil pan. That's what you need to replace and the oil has to be drained.

The part you have there goes under the coolant return pipe. It may have other uses on other models, but it's strictly coolant on the E46 M3.

There is an oil pressure switch near the Oil Filter Housing.

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Discussing Oil temperature sensor in the Faults, Fixes and DIY Forum - Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix! at BMW M3 (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)