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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Grinding sound on start-up
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      05-14-2019, 06:11 PM   #1
hawkjr1
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Grinding sound on start-up

I am getting a metal on metal grinding sound when starting the my 2013 with 75,000 miles. It doesn't do it every time. It only last a second. Unable to tell where its coming from because it doesn't last long. Anyone have a clue please let me know.
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      05-15-2019, 10:07 AM   #2
lsturbointeg
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possible starter? at least on my other car's that what I hear when I start up but goes away.
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      05-19-2019, 10:34 PM   #3
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Quote:
Originally Posted by lsturbointeg View Post
possible starter? at least on my other car's that what I hear when I start up but goes away.
Thanks for information which it did sound like the starter but after having someone start the car while I was outside next to the engine I found out the noise is coming from the Serpentine Belt Tensioner. It make a loud popping sound on start up. I'am thinking the spring inside is broken. Ordered one from ECS tuning today.
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      05-20-2019, 02:06 AM   #4
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Quote:
Originally Posted by hawkjr1 View Post
Quote:
Originally Posted by lsturbointeg View Post
possible starter? at least on my other car's that what I hear when I start up but goes away.
Thanks for information which it did sound like the starter but after having someone start the car while I was outside next to the engine I found out the noise is coming from the Serpentine Belt Tensioner. It make a loud popping sound on start up. I'am thinking the spring inside is broken. Ordered one from ECS tuning today.
Same issue I had. Glad its an easy fix.
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