XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Fuel Pump

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Old Oct 24, 2009 | 04:01 PM
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Default Fuel Pump

If you don't hear the fuel pump making any noise, does that necessarily mean that it does not work? For example, if I have the ignition in the 1st, 2nd and even 3rd spot, I can't hear any noise, when turning the ignition to start the engine, I can't hear the fuel pump either, but I can't hear anything since the engine is trying to turn over.
Sorry for the weird questions, I'm new to all of this.

Thanks
 
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Old Oct 24, 2009 | 06:36 PM
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Originally Posted by jfrog
If you don't hear the fuel pump making any noise, does that necessarily mean that it does not work? For example, if I have the ignition in the 1st, 2nd and even 3rd spot, I can't hear any noise, when turning the ignition to start the engine, I can't hear the fuel pump either, but I can't hear anything since the engine is trying to turn over.
Sorry for the weird questions, I'm new to all of this.

Thanks

When you turn the igntion "on" the pump should run for 2-3 seconds and then shut off.

It will also run when the starter is engaged and when the ECU sees a trigger signal from the ignition amplifier.

You might have to open the trunk to hear it while a helper works the igntion key

DD
 
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Old Oct 24, 2009 | 07:25 PM
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I can definately see why I can't hear it when the starter is engaged, it's pretty loud.

Oh, is the fuel pump running while that annoying beep sound goes off in the car? That annoying beep turns off after 2-3 seconds. If so, no wonder I can't hear it!

Thanks
 
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Old Nov 4, 2009 | 06:38 AM
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why are you questioning the fuel pump? what is the problem?
 
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Old Nov 4, 2009 | 12:05 PM
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Oh, sorry about that.

My fuel pump is not running at all. This is why I'm asking. I guess I need to make sure it's getting power with a voltimeter.

Thanks!
 
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