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    VWVortex


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    Thread: fuel pump relay: to run or not to run?

    1. Member Whistlerskipro's Avatar
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      2011 Tiguan 2.0T 1971 Mustang Grande 1973 Cougar XR7 1964 Triumph TR4 1987 16v Scirocco 1989
      08-06-2012 06:21 PM #1
      Hello to all again Peter here hoping to leave tomorrow as planned but something came up again.

      I just picked up a new FPR, and it is half the size as the one I had in before as well having 4 plug rather than 5. I know things are getting smaller. After changing my fuel pumps and filters the car just won't start when hot. So when I put the new FPR in and turn ignition on without cranking it internal pump runs continually as opposed to the older larger relay that runs for a second or so. Which should it be?

    2. Member sciroccohal's Avatar
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      2each'78s,81S,TTQ,S2 8V, race Corvette
      08-06-2012 06:52 PM #2
      Should run for a few seconds.
      However you can drive the car back to BC with it running...just remember to unplug the relay!

      FPR= Fuel Pressure Regulator......different!
      The feeling of immortality extends right up until the moment of impact.
      I cannot teach you how to be a Zen mechanic, grasshopper.
      The VW Scirocco, the worlds fastest ECONOMY car.

    3. Member Whistlerskipro's Avatar
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      2011 Tiguan 2.0T 1971 Mustang Grande 1973 Cougar XR7 1964 Triumph TR4 1987 16v Scirocco 1989
      08-06-2012 07:15 PM #3
      Thanks, I was somewhat suspicious with the new relay half the size and was surprised when the internal pump ran continually. One of them wasn't doing the job. The older relay is 2" as opposed to the 1" they sold me today. It that what it spills be 16v?

    4. 08-06-2012 07:43 PM #4
      Quote Originally Posted by Whistlerskipro View Post
      It that what it spills be 16v?
      Yer talking like me now, but w/ a little too much Yoda mixed in...

      Does the new Relay (FP Relay) have a schematic on the side like the old OEM one do (did)?

      In a nutshell, and absent any other info, your four post Relay is for the earlier VWs.

    5. Member Whistlerskipro's Avatar
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      2011 Tiguan 2.0T 1971 Mustang Grande 1973 Cougar XR7 1964 Triumph TR4 1987 16v Scirocco 1989
      08-06-2012 07:54 PM #5
      Yes the new one has a schematic with th #'s 87 86 left 30 85 right. The older one "less than 2 years old" KRÃCKER
      24.1400.20 kraftstoffpumpenrelais. I believe I paid a lot more than the $9.00 today.

    6. Member Whistlerskipro's Avatar
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      2011 Tiguan 2.0T 1971 Mustang Grande 1973 Cougar XR7 1964 Triumph TR4 1987 16v Scirocco 1989
      08-07-2012 09:40 PM #6
      Took the ride in today to the Dr. Office. First time in 5 years. Problem was vacuum leaks and bad O2 sensor.

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