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Old 09-10-2019, 03:38 PM
Kral52 Kral52 is offline
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Join Date: Jul 2019
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Mein Auto:
Fuel pump failed

My fuel pump failed 2 weeks ago while I was on expressway. Luckily i was getting off it and it said reduced power then just shut off on me. I took it to BMW dealer where they confirmed fuel pump went out. They replaced it but i ran into a different issue. The passenger side pump was making a strange sound, sort of like a small motor had bad bearings. So i told them and they replaced the transfer pump. I got it back today and it's still making that sound. Hooked up my foxwell scanner and the specified rpms are over 5000. The actual rpms are between 1000 and 2500 and fluctuating with the noise. So do you think I have a bad "new" pump? My old one didn't make a sound.
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Old 09-11-2019, 04:08 PM
FredoinSF FredoinSF is offline
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Location: Reno NV & Healdsburg CA
Join Date: Nov 2009
Posts: 6,825
Mein Auto: 4 BMWs, 1 Mini, 1 Vespa
What engine do you have? Are you referring to the DEF transfer pump making a noise? That would be 'normal'.

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