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Fuel pump running after engine shutdown

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Old Apr 24, 2001 | 12:51 PM
  #1  
Fredrik's Avatar
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Joined: Sep 2000
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From: Uppsala, Sweden
Fuel pump running after engine shutdown

My fuel pump is running for approx. 5 seconds after I've shut down the engine. Is this normal or is it a sign that the fuel pump is bad and can't hold the fuel pressure? The car is a trans am -87, 305 tpi.

Appreciates all help.

Best regards, Fredrik
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Old Apr 25, 2001 | 10:29 AM
  #2  
Ed Maher's Avatar
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Joined: Sep 1999
Posts: 3,197
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From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Since no one else answered this, i'll alleviate your fears. Yes, it is normal for the FP to run for a few seconds after start-up. Especially when my oil is cold my FP will run for a bit after i shut-down, the residual oil pressure keeps the oil pressure swicth closed, keeping power going to the pump.
...ed

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