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    Thread: symptoms of a faulty digifant control unit relay?

    1. Member lil_squeeker's Avatar
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      03 ranger, 63.5 galaxie 500. wrecked 92 cabriolet carat
      02-12-2008 04:26 PM #1
      what are the symptoms of a faulty digifant control unit relay? will my dash lights still come on if this relay is not working ( battery/oil/temp L.e.d. )?

      problem is...sometimes my car wont start ( it will crank over fine though). and if i tap at the relays i'll here the fuel pump kick on then it will start.

      i know it's not the fp relay because even if i jump it and hear the pumps, it still wont start. so it's something else on the fuse panel.

      any thoughts?

      "subculture refuses to let this model vw fade away......they are cherished and preserved in spite of logic and economics."

    2. Member
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      02-12-2008 04:50 PM #2
      I cant exactly remember what it all controls, but I know it controls the fuel pump and hall sender. I had issues w/ this as well. If you have access to a bently it will show you everything that runs off it.
      http://www.4everkustoms.com
      Jason M. Diem
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    3. Member Jetta A2 1989's Avatar
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      1991 Jetta 8v
      02-12-2008 05:02 PM #3
      Digifant relay powers the ecm #32 3rd position.
      Could also be the fuel pump relay #80.
      I never tried to start a MKII with the fuel pump relay bypassed.
      I carry both relays as spares in my glove box.


    4. Member lil_squeeker's Avatar
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      03 ranger, 63.5 galaxie 500. wrecked 92 cabriolet carat
      02-12-2008 05:19 PM #4
      yeah....i have the bentley. and you are right. it does control the hall sender.

      but it doesn't look like it supplies power to the ignition control ( gets power from the ignition directly).

      but i guess if the hall sender isn't getting a signal from the ecu, then i'd get no spark even if the ignition unit has power.

      sound right? the ecu relay is cheap and easy, so maybe i'll just give that a shot.

      edit......i did buy a new fuel pump relay.....still the same problem.





      Modified by ledvolksllin at 5:24 PM 2-12-2008

      "subculture refuses to let this model vw fade away......they are cherished and preserved in spite of logic and economics."

    5. Member Jetta A2 1989's Avatar
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      1991 Jetta 8v
      02-12-2008 05:31 PM #5
      If your in a pinch, you can remove the relay cover and clean the points.
      If the pull in coil is bad, your out of luck.

    6. Member lil_squeeker's Avatar
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      03 ranger, 63.5 galaxie 500. wrecked 92 cabriolet carat
      02-12-2008 05:33 PM #6
      i'll just run to the local parts hole and pick up a new one.
      "subculture refuses to let this model vw fade away......they are cherished and preserved in spite of logic and economics."

    7. Member lil_squeeker's Avatar
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      03 ranger, 63.5 galaxie 500. wrecked 92 cabriolet carat
      02-14-2008 04:19 PM #7
      just to update......it was the ecu relay.

      $6.50 @ rapid parts

      "subculture refuses to let this model vw fade away......they are cherished and preserved in spite of logic and economics."

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