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Battery Drain Fuel injection

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
manitouboat
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Battery Drain Fuel injection

Post by manitouboat » Fri Apr 22, 2016 3:18 pm

2007 S80 3.2 V6 Front wheel drive
I have isolated the drain down to the #37 fuse, fuel injection fuse under hood.
I have to listen real close in engine compartment hear a faint high pitched whine after turning engine off, until I pull the #37 fuse.
Battery dies after 24 hour of sitting without pulling fuse. Can sit for days and not die if the fuse is pulled.
Any ideas?

jimmy57
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Re: Battery Drain Fuel injection

Post by jimmy57 » Fri Apr 22, 2016 5:24 pm

Are you sure it is #37? That shows on wiring diagram to be MAF and the injectors only. Injectors buzzing would flood engine, maybe even hydrolock it if you attempt cranking. MAF sensor wouldn't make noise.

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