fuel pump staying on extra long after ignition shutoff?

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Apr 19, 2006 | 10:12 AM
  #1  
after i turn off my car, my fuel pump stays on, i know its normal for it to do this, but a lot of times it seems to stay on EXTRA long, like a good 30 seconds after i turn off the car..... what do you guys think this has to do with?

my idea: maybe a wire cross between the fuel pump relay, and the MAF burnoff relay, since after ignition shutoff, the MAF burnoff relay gets power, and goes through a cycle to burn off the access carbon on the MAF sensor
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Apr 19, 2006 | 12:42 PM
  #2  
also, i have a non-adjustable fuel pressure regulator.... i've already replaced it once b/c my fuel pressure was NOT holding after ignition shutoff. the pressure would drop IMMEDIATELY after i turned off the car, instead of holding pressure like it should have.
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Apr 19, 2006 | 12:56 PM
  #3  
Oil pressure sending unit it going out if the Fuel pump stays on that long. The OPSU controls the pump and when it reads X amount of oil pressure it keeps the pump on.
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Apr 19, 2006 | 01:19 PM
  #4  
really??? thats def. weird b/c i have a brand new sending unit in there.... i know that means nothing, but thats weird
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