ESS -- $4 FIX for Rough Idle

[123Britt]

OK -- So in my n52 I could see a little oil weeping from the ESS - and my car is running a little rough on idle & intermittent at that.

So after replacing spark plugs (NGK) and removed the 16 yr old Coils (66K miles). The poor idle remains.

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Purchased ESS Seal and the Valvetronic Motor (Football Seal).
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After replacing the ESS Seal (10mi Job). WoW!!! I must have had a bad vacuum leak.

As cheap as the ELRING ESS Seal Was $4.06 from FCP Euro --- and simple to remove -- I highly recommend.

[WickedNy]

Curious…because I’ve had a rough idle from was since initial install, and recently started to notice a little oil as well…do you have a part number/possible write up to go by?

[123Britt]

ESS Seal was on FCP -- Removed with a Right Angled pick --- stuck into the side of the seal in about 3 places and pulled it out in no time. Ensured that the ESS sensor prongs and inside of Sensor (after 1st disconnecting the battery) was free of any oil / used alcohol on an Q-tip and wiped it out.

Good Luck. see Youtube

[3002 tii]

Originally Posted by WickedNy

Curious…because I’ve had a rough idle from was since initial install, and recently started to notice a little oil as well…do you have a part number/possible write up to go by?

He’s referring to this part

https://www.fcpeuro.com/products/bmw-gasket-11127552280

Plenty of write ups online as it’s a common maintenance item, just google eccentric shaft sensor. Here’s one from YouTube