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BMW 3-Series (E90 E92) Forum
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320d starter motor on the blink
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10-06-2021, 10:52 AM | #1 |
Second Lieutenant
42
Rep 229
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320d starter motor on the blink
I left for work this morning, no issues after it being left overnight.
At lunch, the car wouldn't start, it was just clicking quite loudly. Went out to it before I called a taxi to go home and it started straight away first time. I'll check in a bit on INPA to see what the voltages are like but it had a new battery 4 months ago. Where is the starter on the M47? Keep thinking I saw it when I had the manifold off to do the injector seals?? |
10-06-2021, 04:09 PM | #2 |
Lieutenant
106
Rep 575
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Look at the simple stuff first.
Are the battery connections tight on the battery terminals? Is the main power cable to the fusebox behing the glovebox good? Have you had the recall upgrade? Is the engine earth strap making good contact? |
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10-07-2021, 02:10 AM | #3 | |
Second Lieutenant
42
Rep 229
Posts |
Quote:
I'll check the main power cable later on. Recall was done by BMW last Feb. Is the earthing strap by the washer bottle fil cap on the M47? Since yesterday mornings episode I have driven it around 5 times, no issues. Weird. Thanks |
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10-10-2021, 11:58 AM | #4 |
Second Lieutenant
42
Rep 229
Posts |
Well, on Friday morning after a short journey the same thing happened again.
Car wouldn't crank. AA man came out, checked the battery which was 12v. He messed about with the wires on the starter and it cranked and started straight away. He did say he noticed the voltage dropped to 8v when it started. That doesn't sound normal? |
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11-18-2021, 06:34 AM | #5 |
New Member
2
Rep 20
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Check the flexi earth strap on the N47's which is located on the right side of the engine just under the high pressure pump by the engine mount. These often corrode quite badly and cause all kinds of electrical problems, such as starter issues. Another thing to check is the main positive feed off the battery where it connects to the post down at the bottom of the battery tray, I've seen these badly corroded as well, most of the time due to water ingress.
Starters do fail more quickly with start/stop enabled. Usually code in the memory function so if I turn it off, it stays off when I start the car again. |
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01-08-2022, 02:23 AM | #6 |
Second Lieutenant
42
Rep 229
Posts |
It was the power cable running from the B post to the starter.
It looked tight behind the 13mm nut but it wasn't. I tightened that down and the issue hasn't returned. |
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