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469 motor electric fuel pump(s) on after truck turned off?

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Old 07-16-2016, 06:46 PM
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Default 469 motor electric fuel pump(s) on after truck turned off?
Last night I went out to get something from my 86 and it was dead quiet out. I noticed a noise and it seemed to be coming from the gas tanks. I switched to the rear tank which had no gas in it and the noise got louder. Switched back to the front and not as loud but still there. Any ideas?

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Last edited by 84Red; 07-17-2016 at 01:34 AM.
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Old 07-25-2016, 05:30 PM
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Nobody have any ideas?
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Old 07-25-2016, 09:07 PM
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Originally Posted by 84Red
Last night I went out to get something from my 86 and it was dead quiet out. I noticed a noise and it seemed to be coming from the gas tanks. I switched to the rear tank which had no gas in it and the noise got louder. Switched back to the front and not as loud but still there. Any ideas?

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Check that the fuel pump relay is not stuck on. Pull the relay out of the connector and see if the pumps stop.
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Old 07-30-2016, 05:46 PM
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Where is the relay? as far as I know there isnt any more sound.
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Old 07-31-2016, 12:43 AM
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Originally Posted by 84Red
Where is the relay? as far as I know there isnt any more sound.
On the driver side firewall between the brake booster and the side fender.
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