ground wire

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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markmark
Neutral
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Joined: Fri Feb 16, 2024 11:48 pm

ground wire

Post by markmark » Fri Jan 10, 2025 10:03 am

Hi, I have a problem with starting the engine – the symptom is as if the battery is weak, but the battery is new. I figured out that the issue is due to a lack of proper ground connection to the engine – when I directly connect the engine to the car body, I am able to start it. Does anyone know where the main engine-to-body ground connection point is?

111marc111
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Re: ground wire

Post by 111marc111 » Fri Jan 10, 2025 10:53 am

Look around the starter motor area. Which is uk drivers side.
Look from under the car up at that side chassis leg and there is a large ground connection bolted up to the underside of that chassis leg. 13mm nut if i recall.
In amongst that is a few cables that head down to the alternator and the starter motor.
Under the starter motor just above the sump is a large ground connection to the block. Cap head bolt with 6mm Allen head if I'm not mistaken.
Have a look. If your still struggling I can probably get you pics off mine.

cover99
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Re: ground wire

Post by cover99 » Sun Jan 12, 2025 11:15 pm

I had a quick look under mine can see one end at/around the alternator...other end disappears :) Could you post up pictures? Thanks Steven

bilko1
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Location: Bournemouth,Dorset, UK

Re: ground wire

Post by bilko1 » Tue Jan 14, 2025 6:05 pm

It goes from the rear of the starter bracket to the chassis leg above the alternator. I've just removed the alternator as it decided to pack up after doing the cambelt :audibash: :audibash: :audibash: If you need better pictures I'll get them when its light.
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Shoppinit
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Re: ground wire

Post by Shoppinit » Tue Jan 14, 2025 6:42 pm

Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
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"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

111marc111
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Re: ground wire

Post by 111marc111 » Tue Jan 21, 2025 4:32 pm

Sorry for the delay. Not had chance to get near the car. See pics if you havent found them and solved it already
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cover99
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Re: ground wire

Post by cover99 » Fri Jan 24, 2025 8:01 pm

Thanks for this will have a wee look..... When the wind dies down a bit. Always good to know where they are. Thanks

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