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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > I need help...service engine soon light



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      09-01-2011, 05:14 PM   #1
gizmo335i
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I need help...service engine soon light

I've been getting a bad rattle at startup lately. I'm not sure if it's wastegate.

Anyway, I just took my JB4 and intake out to sell. Seems like too much of a coincidence. I don't have any other problems...everything seems normal.

If the car is running normal...it couldn't be the ECU, could it?

Do I need to make sure there are no codes? I would think not if it happened AFTER I took the Jb4 out?
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      09-01-2011, 07:04 PM   #2
Brey335i
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If it's wastegates you can test it by doing this:

Drive down your neighborhood street in a low gear. Let off the gas and watch the revs fall. If it makes a rattling noise, it's the wastegates.
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      09-01-2011, 09:48 PM   #3
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Any recent work done?

Any error codes?
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      09-01-2011, 10:57 PM   #4
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Car still shakes when you put the JB4 back on?
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      09-02-2011, 05:04 AM   #5
gizmo335i
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No recent work done. I took the JB4 out. I'm selling the car.
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