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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 11-13-2010, 03:23 AM   #1
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Join Date: Oct 2010
Location: SoCal
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My Ride: 323i
Brown Wire on Valve cover?

I tried to change my valve gasket today. I broke the brown wire located in the middle. When I tried to take off the wire connection, the top nut stick with the bottom nut together. So when I turn the top nut, instead just the top, the whole thing is turning. I tried to hold the bottom with open wrench while turning the top nut counter clockwise to separate them and still it won't move. So I ended to turn the whole thing, twisted the cable and it's broken now. I'm just wondering what cable is this? Can I fix it by soldering the wire to the metal connector (it split just at the end of the connector, no cable sticking out from the metal ring connector)?

The second I finally open the gasket, rain just pouring really hard in an instant for 5 minutes and it just stop. Hopefully it didn't get inside it. As it's getting dark, I went to buy a a new night light so I can continue working. Just after I turn the light on, the rain start pouring really hard again. And just like before, hopefully the rain didn't get inside the engine. Sigh... It's been a shitty day for me. Hopefully someone can help me with the cable.

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Old 11-13-2010, 03:46 AM   #2
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its a ground for ign. coil i believe. u should fix it.
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Old 11-13-2010, 05:01 AM   #3
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Whenever you see a brown wire on a BMW it's a ground.
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Old 11-13-2010, 05:02 AM   #4
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1st.. yes, you should repair the ground cable because you will get all sorts of issues, mainly misfiring. 2nd, from what I understand, it was raining while your valve cover was off? If water got into the engine, I'd do an oil change as well
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Old 11-13-2010, 09:31 AM   #5
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Repair it immediately. Its the ground and if you try and run the car, you will misfire, but the car isnt sensitive enough to pick up a loose ground so youll be searching for years to figure out why it misfires if you forget about it.

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