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2010 2011 BMW 5 Series Forum F10 Slow engine start, as if the battery is dead |
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02-07-2019, 10:07 PM | #1 |
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Slow engine start, as if the battery is dead
Have a new N63 engine in my car, but when starting the engine turns over very slow, seems like that battery doesn't have enough juice. But, it still manages to start every time. Battery is good, jumping it or charging it overnight makes no difference.
With only 240 miles on it, took it back to the shop and they got back to me, saying its the crankshaft position sensor, they ordered it and should have it tomorrow. I thought the engine won't start with a bad sensor? Mine starts and runs well. Any experience with bad crankshaft position sensor? |
02-07-2019, 11:20 PM | #2 |
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how old is the battery now?
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02-10-2019, 06:34 AM | #4 |
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Its a bad starter.
Recently had it with my n55 535i. Also thought battery was getting bad, and after a while didn’t start at all, no clicking no nothing. Battery still measured 12.4v so diagnosed the starter. Replaced starter and boom instant starting again |
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02-10-2019, 07:40 AM | #5 |
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N55 starters when failing usually crank slow-I haven't had N63 ones do that yet. However-Since the engine was replaced I would check the ground stuff for the engine and make sure it doesn't have high resistance from either not making good contact or possibly corrosion in the cables.
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