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Thread: Need help with relay numbers on my S2 conversion

  1. Member
    Join Date
    May 5th, 2006
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    Wilton NH
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    182
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    91 corrado tdi/ 2000 A4TQ Avant sportline/94 cummins 5 speed 4x4(haul'n cool cars to rallies)
    03-22-2012 11:45 AM #1
    Hey everybody, there was little activity in the 200 forum so I thought I would place the question here. I am about to try and start my S2 converted 91 CQ. It has a 3B from a 91 200 TQ. The red taped engine harness has a spot for 2 multi-plug relays side by side. If anybody has those numbers for the relays that would be great. I have tons of relays but I don't want to put the wrong ones in that might fry the ecu.

  2. Member
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    200 20v 90q 20v
    03-25-2012 08:52 PM #2
    The one with the brown socket is for the afterrun relay/control unit which is also brown. The black one isn't used for anything.

  3. Member
    Join Date
    May 5th, 2006
    Location
    Wilton NH
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    91 corrado tdi/ 2000 A4TQ Avant sportline/94 cummins 5 speed 4x4(haul'n cool cars to rallies)
    03-25-2012 10:27 PM #3
    thanks man , is the over run relay for the coolant recirculating pump for the turbo?

  4. Member
    Join Date
    Oct 2nd, 2004
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    200 20v 90q 20v
    03-25-2012 10:41 PM #4
    Yes the afterrun relay controls the after run fan and electric H20 pump triggered by the two pin coolant sensor on the h20 manifold.

  5. Member
    Join Date
    May 5th, 2006
    Location
    Wilton NH
    Posts
    182
    Vehicles
    91 corrado tdi/ 2000 A4TQ Avant sportline/94 cummins 5 speed 4x4(haul'n cool cars to rallies)
    03-25-2012 10:58 PM #5
    thanks man, I'm too used to building rally cars this street stuff is not my usual forte'

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