Pump Mounted Driver Module
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Pump Mounted Driver Module Pump Mounted Driver Module
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Dorman - OE Solutions Pump Mounted Driver Module

Part No. 904-104 Warranty Details  

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Re-engineered to address failure points in the original construction, our Fuel Pump Driver Module is powder-coated for high corrosion resistance and durability, with a newly designed micro-processor.

Product Features:
  • Newly engineered bushings on the mounting screws provide a long service life
  • Effectively regulates voltage to the fuel pump
  • Maintains proper fuel pressure over the full operating range of the engine
  • Vehicle simulator testing ensures quality performance
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3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    I there a way to test this part before replacing?
    Asked on 4/4/2013 by Joey

    1 answer



      Testing procedures: Simply put, if your check engine light is not on and you experience stalling, it is a 95+ percent certainty that you need a new PMD. If your check engine light is on, you need to get your codes checked. Tech Tip: If your truck stalls and will not re-start you can often get it going again by putting a cold wet rag on the PMD, or by carefully pouring a cup of cold water on it. Check to be sure your lift pump is running. The lift pump delivers fuel to the injection pump and is located on the frame rail under the driver's seat. The lift pump will not cause stalling, but when it goes bad, the injection pump runs hotter which shortens PMD life. See lift pump under products for instructions on checking the lift pump. Make sure you have good clean fuel with no water. For the very thorough individual: Check all electrical connections - battery terminals, engine and body grounds, and all fuel injection pump wiring including the multiple grounds on the intake manifold. With the batteries disconnected open up all connections (including those at the bulkhead) and look for loose or corroded connections, but do not spread open the terminals. Take your time and look carefully for chafed wiring. One connector of particular interest is the large15-way connector near the back of the intake manifold where the main engine harness meets the fuel injection harness which then runs forward under the intake to the injection pump. This connector is commonly the site of severe corrosion, especially in northern states and may cause a variety of intermittent problems. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

      Answered on 4/5/2013 by Steve from AAP
  • Q:

    what does this do? How do I test it?
    Asked on 11/14/2011 by Anonymous from theodore, al

    1 answer



      The Fuel Pump Driver Module communicates diagnostic information to the power train control module (PCM) through the Fuel Pump Monitor (FPM) circuit. This information is sent by the FPDM as a duty cycle signal which in turns controls the fuel pump. The detailed process for testing the FPDM has been sent to the mail address provided.

      Answered on 11/15/2011 by Vincent from AAP
  • Q:

    does this come with a bracket to mounton outside of manifold or do u have to purchase bracket separate?
    Asked on 2/7/2010 by Joe from Tipp City, Oh

    1 answer

    • A:

      Buy a rerouting kit to move it under the front bumper. They can be bought for next to nothing and when it fails again it'll be easier to change next time around.

      Answered on 3/4/2010 by Randy from Marmaduke, AR
Displaying questions 1-3

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