Thread: SOLVED!: E53 X5 3.0 sounds like dying banshee on fire when I take my foot of the gas
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  #7  
Old 07-26-2021, 07:27 AM
X5chemist X5chemist is offline
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Join Date: Jun 2021
Location: Austin, TX
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Wow, that's loud! If the idle pulley and belt tensioner have over 20k miles, I would replace them. Same for the A/C pulley.

For giggles, does the secondary air injection pump turn on? At first start up on mine, it does. I replaced mine. It sounded like a jet taking off. The screeching is ear piercing.

Next, lift each front wheel separately and turn the wheels. Keep eliminating easy stuff first.

Great coast to coast runs! And back to TEXAS! I want to spend time fixing mine up for long trip runs. Sporty, fun size, and decent mileage.
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'06 X5 3.0i - bought @143,123 miles (12/26/20)
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