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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > What's up with my engine?
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      10-22-2019, 05:37 PM   #1
Metanoia Prime
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What's up with my engine?

My wife was out driving it this afternoon and the notification suddenly system says it is low on coolant / overheating. Would a lack of coolant alone cause it to make these noises?

We had it parked in a parking structure for a week while we went overseas and picked it up Sunday afternoon. Could that figure into any of this at all?

Grabbing some coolant on the way home, but just wanted to see what you all think.

https://youtu.be/sK0rfOu6C7U
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      10-22-2019, 06:48 PM   #2
BuefordTjustice
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One of the noises is your fan working as hard as it can to cool the engine. I'm assuming that's because you had no coolant? How long was it overheating for? Operating a car at high temps can cause serious damage. Almost sounds like valve knocking but honestly I have no idea....Pray that it's a bearing or something cheaper.....
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      10-22-2019, 06:53 PM   #3
zeddladd
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You let the wife drive it - that's the problem
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      10-22-2019, 07:13 PM   #4
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Can you record more with the hood open?

Excluding the fan and digging into the shaking and rattle, can be turbo, timing chain, electric water pump. Also inspect your engine mounts
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      10-24-2019, 03:22 PM   #5
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I'd bet that the hose to the coolant overflow bottle has broken - had this same issue in my car. It started with the low coolant warning, car went into limp mode, and fans were running all out.

You'll need to replace the hose, refill the overflow tank (you've lost more coolant than you think), and clear any codes.
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      10-30-2019, 12:19 AM   #6
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Quote:
Originally Posted by SpecialK View Post
I'd bet that the hose to the coolant overflow bottle has broken - had this same issue in my car. It started with the low coolant warning, car went into limp mode, and fans were running all out.

You'll need to replace the hose, refill the overflow tank (you've lost more coolant than you think), and clear any codes.
Yep, you're right. Is this a common issue? I'm going to be out of a car for up to 4 weeks, per the dealer. They state that they are getting the part(s) from Germany and no dealers nearby have them available.

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