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I'm not here.
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Fuel Pump stays on (buzzz)
My fuel pump stays on, never shuts off until the motor is shut off.
Anyone know how to get the pump to shut off?
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"When do we say we can stop the Whole-Sale State-backed discrimination against straight white males? - island911 (This guy is insane, no?) |
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07-11-2004, 07:35 PM
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Maybe I misunderstand your question...but it is normal for your fuel pump to be on when your engine is running. Your engine would die soon after it shut off.
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74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo http://www.pelicanparts.com/gallery/fintstone/ "The problem with socialism is that you eventually run out of other people's money" Some are born free. Some have freedom thrust upon them. Others simply surrender |
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07-11-2004, 07:41 PM
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Join Date: Feb 2000
Location: Los Angeles
Posts: 13,333
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Huh? Do you mean it stays on after the motor is shut off?
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Jack Olsen 1972 911 My new video about my garage. • A video from German TV about my 911 |
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07-11-2004, 07:43 PM
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I'm not here.
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Cutoff switch is disconnected. How do I reconnect?
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"When do we say we can stop the Whole-Sale State-backed discrimination against straight white males? - island911 (This guy is insane, no?) |
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07-11-2004, 07:46 PM
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Join Date: Nov 2002
Location: Planet Eugene
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Maybe it has gotten noisier and you didn't notice it before?
It runs as long as the ignition is on, even if the motor is not running -- say, before you start the starter. |
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07-11-2004, 08:59 PM
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Join Date: May 2000
Location: Los Alamos, NM, USA
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Air flow switch is disconnected or bad. Look (feel?) for the connector on the forward side of the air box and rconnect if loose.
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07-11-2004, 09:40 PM
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never ending projects
Join Date: Oct 2003
Location: greensboro, NC
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I guess that you mean that the fuel pump runs when the key is in the on position and the car is not running. The easiest thing might be to try a different fuel pump relay. The contacts on yours may be permanently closed. Good luck
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07-11-2004, 10:42 PM
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I'm not here.
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Yeah, that's what is going on. It makes a buzzing noise, and is really loud... always.
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"When do we say we can stop the Whole-Sale State-backed discrimination against straight white males? - island911 (This guy is insane, no?) |
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07-11-2004, 11:03 PM
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never ending projects
Join Date: Oct 2003
Location: greensboro, NC
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The Bentley manual shows what conditions need to be met inorder for the fuel pump to run. With a voltmeter or test light I'd imagine that you could check for voltage at various pins where the fuel pump relay plugs in.
I'm on the road right now and don't have a manual with me or I'd list them for you. |
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07-11-2004, 11:17 PM
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Not Quite Banned
Join Date: Dec 1999
Location: Ft. Lauderdale
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As Jim mentioned above, the air flow switch usually gets disconnected to help with cold start issues. The fuel pump then runs as soon as you turn the switch 'on'. Did this just 'happen', or has it been going on for some time?
Good luck,
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Thomas Owen 1972 911T 1972 911S |
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07-12-2004, 02:47 AM
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I'm not here.
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It's been happening ever since the purchase.
It was even in the PPI.
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"When do we say we can stop the Whole-Sale State-backed discrimination against straight white males? - island911 (This guy is insane, no?) |
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07-12-2004, 06:26 AM
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Join Date: Nov 2001
Location: Holliston, MA USA
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There is also a wire that could be disconnected by the 14-pin connector (it goes to the air-flow sensor plate switch).
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07-12-2004, 09:01 AM
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1980 Porsche 911SC targa 3.0
1974 Porsche 911 3.0
Yellow 911
