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2004 - 2008 Ford F150 - P1233 Fuel Pump Driver Module off-line???? - My truck keeps throwing this code, anybody on here have this before and can tell me what the problem is?? There is nothing wrong with the module because if it was the truck would not be running? am I right in saying that?? or should I just go ahead...
2004 - 2008 Ford F150 - Fuel Pump Driver Module- Check yours!! - Ok, I know this is a fairly well known fact to most but to those that arent aware this is a heads up. Now Ford has built one hell of a truck with the F-150 but we all know they have their quirks and the fuel pump driver module issue is one of them. The...
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The fuel pump is powered by a relay, and its secondary circuit is monitored by the EEC. The primary circuit also powers the EEC itself, so if that's out, the EEC would not come on, so no self test or codes.
You can easily verify if the no start condition on your Ford F150 (or Expedition, or Crown Victoria, or any 4.6L or 5.4L equipped car, pick up, or SUV) is due to a lack of fuel.
The high current circuit is the one that delivers the voltage (and thus current) to the fuel pump in the gas tank (or on the frame rail). When the fuel pump relay is off (not activating the fuel pump), the high current circuit is ‘open’.
FUEL PUMP TEST 2: Using A Fuel Pressure Gauge Testing the fuel pump's pressure is one of the most accurate ways to verify that the fuel pump is good or BAD. Ford has made it super easy to attach a fuel pressure gauge to the fuel system to test the fuel pump since there's a Schrader valve on the fuel rail (see image 1 of 2 in the image viewer).
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