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Thread: 107000 Fuel Pump/Sender Module Service Bulletin

  1. #1
    DMC Texas 800-872-3621 or +1-281-441-2537 DMCH James's Avatar
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    My VIN:    Formerly 10570 and 6776, now tasked with maintaining 2932

    Club(s):   (SCDC) (DCUK)

    Exclamation 107000 Fuel Pump/Sender Module Service Bulletin

    DeLorean Motor Company has identified an issue that affects some of the 107000 Fuel Pump/Sender Module that could allow the fuel pump to continue running if the inertia switch is “tripped”. Today we are sending a letter to all purchasers of record of the 107000 Fuel Pump/Sender Module with instructions on how to quickly and easily test the unit and make a minor modification to correct this issue if required.

    DMC Texas, DMC California, DMC Midwest, DMC Florida (Orlando) and DMC Northwest have all supplied us with lists of purchasers to whom we have sent these letters. Gulf Coast Motorworks (formerly DMC Florida in Bonita Springs, Florida) and DeLorean Europe (formerly DMC Europe in The Netherlands) have been unwilling or unable to supply us with the names of the customers who have purchased directly from either of those two locations, though we have supplied them with the same information and asked that they forward it on to their customers.

    Some of the cars that these were installed into have undoubtedly been sold or otherwise changed hands. Follow this link to download the contents of the letter mentioned above. https://www.delorean.com/pdf/DELOREA...r-Bulletin.pdf

    Contact DMC (Texas) at 800/872-3621 or 1-281-441-2537 with any questions.
    James Espey, Vice President
    DeLorean Motor Company (Texas)
    http://www.delorean.com

  2. #2
    Senior Member DavidProehl's Avatar
    Join Date:  May 2011

    Location:  Maple Grove, MN (Minneapolis)

    Posts:    1,167

    My VIN:    05457

    For what its worth, I'm still loving my pump/sender combo. I'm over 2 years in with it and have had no issues! Previously I had fuel pump issues at least once a year.
    David Proehl

  3. #3
    Senior Member Christian Dietrich's Avatar
    Join Date:  May 2011

    Location:  Bunker Hill, West Virginia

    Posts:    428

    My VIN:    11035

    Mine has been in for over a year and i still love it. No issues and light years away from the original design. Im sure DMC-H will have it all figured out. No big deal! 😁

    Sent from my SM-N920P using Tapatalk
    Vin 11035 wide stripe, flat hood, 5 speed, Spec 1 exhaust, custom grey/black interior, custom lighting, custom stereo and custom alot of stuff!

  4. #4
    Senior Member Christian Dietrich's Avatar
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    Location:  Bunker Hill, West Virginia

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    My VIN:    11035

    Btw thanls for catching this and letting us know James. Keep up the good work!

    Sent from my SM-N920P using Tapatalk
    Vin 11035 wide stripe, flat hood, 5 speed, Spec 1 exhaust, custom grey/black interior, custom lighting, custom stereo and custom alot of stuff!

  5. #5
    My friends think I'm nuts jawn101's Avatar
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    Location:  Sacramento-ish

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    My VIN:    02100

    Club(s):   (NCDMC) (DCUK)

    This is really interesting. During some unrelated testing a few weeks back I discovered that my inertia switch didn't stop the fuel pump. I was wondering why but just assumed the switch was internally failed or something and didn't get back around to investigating further. Now I guess I know.

    James - is it possible to remove the pin from the connector rather than cutting the wire? That seems awfully...irreversible to me.
    Jon
    1981 DMC-12 #02100. July 1981. 5-speed, black, grooved w/flap.
    restoration log, April 2012 to present
    restoration log, March 2011 to April 2012
    full and detailed photo restoration log

  6. #6
    DMC Midwest - 815.459.6439 DMCMW Dave's Avatar
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    Location:  Crystal Lake IL

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    Quote Originally Posted by jawn101 View Post

    James - is it possible to remove the pin from the connector rather than cutting the wire? That seems awfully...irreversible to me.
    You could just extract the pin and tape it off, but I can't imagine why you'd ever want to reverse this. Cut the wire on the pump side as shown and you haven't damaged anything that was "original" to the car, i.e. the original car side of the harness.
    Dave S
    DMC Midwest - retired but helping
    dswingle@DeLorean.com

  7. #7
    My friends think I'm nuts jawn101's Avatar
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    Location:  Sacramento-ish

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    My VIN:    02100

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    Did the mod today. Easy as everyone said, but the implementation isn't exactly perfect. When tripping the inertia switch there is now no ground to the fuel gage, so it pegs vertically. Theoretically you should never see this happen, and if it does you probably have bigger problems. Seems that the original wiring schematic had grounds independently for the fuel sender and pump (makes sense as there was no single unit controlling them before) and the upgraded logic unit must have mistakenly used a shared ground internally for them both. So now when you interrupt the only remaining ground via the inertia switch, the sender circuit goes offline too.
    Jon
    1981 DMC-12 #02100. July 1981. 5-speed, black, grooved w/flap.
    restoration log, April 2012 to present
    restoration log, March 2011 to April 2012
    full and detailed photo restoration log

  8. #8
    Senior Member Ras12's Avatar
    Join Date:  Apr 2012

    Location:  New England

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    My VIN:    10350 SEARCHING FOR VIN#16664

    Club(s):   (DMCNE)

    This may be a stupid question but assuming you keep everything they way it is (i.e. factory plug) and do not change the connector is the only implication that the inertia switch will not work and the fuel pump will still have power? I thought most modern cars today do not have inertia switches, is that true? If so, what is the big deal with not having one (i.e. not changing the plug or jumping it). Don't want to sound like someone who isn't interested in safety but just curious as to both sides of story. Also, when does the inertia switch engage? Front, side, rear impacts? Rollovers only? Again, just trying to be more educated about them.
    SEARCHING FOR VIN#16664
    -------------------------------------------------------------------------------------------------
    1987 Audi Coupe GT (FOR SALE or TRADE - Runs & Drives Great)

  9. #9
    Member OZ DMC's Avatar
    Join Date:  May 2015

    Location:  Australia

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    My VIN:    2065

    Quote Originally Posted by jawn101 View Post
    Did the mod today. Easy as everyone said, but the implementation isn't exactly perfect. When tripping the inertia switch there is now no ground to the fuel gage, so it pegs vertically. Theoretically you should never see this happen, and if it does you probably have bigger problems. Seems that the original wiring schematic had grounds independently for the fuel sender and pump (makes sense as there was no single unit controlling them before) and the upgraded logic unit must have mistakenly used a shared ground internally for them both. So now when you interrupt the only remaining ground via the inertia switch, the sender circuit goes offline too.
    My car needed the fix so did mine yesterday. 2065 is back roaming the streets of country NSW

  10. #10
    Senior Member
    Join Date:  Jun 2011

    Location:  Houston, TX

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    Quote Originally Posted by OZ DMC View Post
    My car needed the fix so did mine yesterday. 2065 is back roaming the streets of country NSW
    My car needed the fix too so I did mine yesterday as well. 3341 is back roaming the streets of Texas.

    A side note: The new combo-unit works great, but since installing it, I've always had the problem of the fuel pump access panel not fitting back on correctly. Anyone else have that problem? I've tried a few adjustments, but still it doesn't fit right, so I've just been living with it.

    Thomas

    ...
    Keeper of the new DeLorean Owners Directory, at www.DeloreanOwnersDirectory.net

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