fuel pump 94 explorer

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Jan 18, 2004 | 12:54 AM

steve88

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New User

Joined: Jan 2004

Posts: 2

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From: Sacramento

fuel pump 94 explorer

I'm having to install my 3rd fuel pump in 3 years on my 94 explorer - I'm wondering if there is something causing my pumps to burn out early.

Is the voltage to the fuel pump supposed to be the same as the battery voltage? Is this pretty much standard on all vehicles - for example is the voltage on the fuel pumps of my 88 F150 also 12 v?

Any thoughts would be welcome - I'm at the point where i'm thinking of drilling a hole in the bottom of the vehicle so i don't have to wrestle with the fuel tank.

Thanks.

Jan 18, 2004 | 05:54 AM

Opera House Works

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Joined: Aug 2002

Posts: 886

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From: Cincinnati

Fuel pressure is controled by shunting fuel back to the tank. Approximately 80% of the fuel pumped is returned back to the tank. This extra fuel flow is used to cool the pump. You have not mentioned if you have ever measured fuel pressure. If there was a restriction in the line to the regulator, the fuel rail pressures would be normal but the flow woulf be reduced. This would put extra strain on the motor. The fuel pump fuse can be removed and pump current measured at the socket. It should be about 5A. If anything is abnormal, it would show up in the motor current.