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BMW 3-Series (E90 E92) Forum
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What did you do to your car today?
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03-04-2021, 01:05 PM | #15643 | |
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03-04-2021, 09:07 PM | #15644 |
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Removed Calipers and Rotors
I'm still chasing a slight front end vibration (felt through the steering wheel) at freeway speeds. I have two new front wheels, new struts and mounts, and new thrust arms yet the vibration persists.
I removed my calipers and rotors to inspect, and discovered that my car has Akebono ceramic pads and OEM rotors which were replaced by the previous owner within the last year. There was some rust between the hub and rotor on both sides - not horrible but much more than I was expecting so I polished it up with a wire wheel on my drill. The caliper slide pins were gummed up pretty badly with what looked like old rubber fused to them. So I polished those up too and applied a light coat of silicone brake grease (despite the Bentley manual saying NOT to grease them!!!) The rubber slide bushings didn't look too great inside so I'm going to replace them, but left them alone for now. The biggest surprise was learning that my drivers side wheel bearing is starting to fail. I can't feel any lateral play, but when spinning it by hand it sounds crunchy. Not as bad as some failed bearings I've experienced in the past but it's not smooth like a new bearing. I wasn't able to hear this with the caliper bolted up because the pad/rotor sound was louder, but once removed I can hear and feel that the bearing isn't spinning smoothly. Could this be the cause of my vibration? Again, no lateral play in the bearing, but could there be some up-and-down play that's only felt at higher speeds? |
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03-04-2021, 10:21 PM | #15645 |
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Finished my valve cover gasket replacement. I was going at a snail's pace because I hit a snag on literally every step plus I had the luxury of time. This was the source of a mystery misfire I was having for the better part of a month. Felt great to be able to plant my foot into the floor and redline her after so long
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03-04-2021, 10:45 PM | #15646 | |
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03-04-2021, 10:53 PM | #15647 |
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138K on the car now. Vibration only starts at around 50MPH and stays pretty constant. It's not even that strong but I'm really picky. When braking from highway speeds I can feel the vibration slightly in the brake pedal but it's the same intensity as when I'm not braking. Under 50MPH it's perfectly smooth.
I haven't ruled out a bad tire but now that I know I have a bad bearing I want to take care of that first. After new wheel bearings I'm going to do a road force balance. |
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03-04-2021, 10:57 PM | #15648 | |
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03-05-2021, 02:29 AM | #15650 |
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Currently fitting my front bumper onto my 325!
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03-05-2021, 02:30 AM | #15651 |
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03-05-2021, 12:01 PM | #15652 |
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Finished wrapping my trim in brushed aluminum and flashed back to RWD
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03-05-2021, 12:38 PM | #15653 |
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Got any pictures? What wrap material did you use? I'm thinking about wrapping my trim in either brushed aluminum or maybe piano black.
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03-05-2021, 01:04 PM | #15654 | |
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Dont mind the black stripe, deciding if it looks better than the visible dash crack
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03-05-2021, 01:15 PM | #15655 | |
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03-05-2021, 01:26 PM | #15656 | ||
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03-05-2021, 01:27 PM | #15657 | |
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03-05-2021, 01:44 PM | #15658 |
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I received a recall letter from BMW NA for the pcv heater and the blower motor wiring. I thought these were done already on my car..
I would have the blower motor done but definitely not the pcv heater, I don't want a dealership monkey breaking all my pcv hoses and taking out my manifold, got plenty of pcv heaters around to choose from myself. EDIT: turns out it doesn't apply to my car, it applies to my old 325i e90 I had with a zillion miles, that car sometimes would smell like burnt stuff when you turned on the AC, that was a year ago. Probably burned down already lol |
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03-05-2021, 01:57 PM | #15659 | ||
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03-05-2021, 03:29 PM | #15660 | |
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03-05-2021, 03:45 PM | #15661 | ||
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03-05-2021, 03:58 PM | #15662 |
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That looks really good too. I noticed that you haven't done the console trim. Are you going to do it or not bother?
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03-05-2021, 04:22 PM | #15663 |
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Took her for a drive after some down time. Romped on the gas and did a code scan afterwards as it felt like the car choked for a second after a gear change.
Only code was 30EE, - Cyl 2 superknock.
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03-05-2021, 04:35 PM | #15664 | |
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