buzzing from inside cab passenger side

1980-1986 Datsun 720 forums. All 720-specific topics and discussion can be found here.
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86 720
Posts: 199
Joined: Tue Sep 29, 2009 11:55 am
Car: 1986 720 4cyl Standard Cab

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Started the truck and buzzing came from passenger side right above the speaker. I'm thinking this is the fuel pump relay?
My battery light came on and the buzzing stopped at higher RPMs.

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flinterman2000
Posts: 1011
Joined: Mon May 04, 2009 5:32 pm
Car: 2000 Nissan Wingroad, 85 Datsun 720 Pick Up.

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Shouldn't be the fuel pump relay. If it was, at higher RPM's you would have a loss of power as the relay would not be efficient and consequentially you would have less fuel being delivered hence loss of power and/or sputtering.
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86 720
Posts: 199
Joined: Tue Sep 29, 2009 11:55 am
Car: 1986 720 4cyl Standard Cab

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Yeah, I figured that out when I pulled the relay and nothing happened.

Looks like I accidentally double posted. Ended up being the alternator.
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