Is it possible to mix up icv and tps sensor wire?

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  • flyboyx
    R3V OG
    • Sep 2008
    • 8371

    #1

    Is it possible to mix up icv and tps sensor wire?

    about 2 years ago, i bought an 88 ix and am just now getting around to restoring it. the car has never run right since i have owned it. the engine would always start and run, but when stepping up the rpms, the engine would always bog out, miss, and backfire. it throws a check engine code for throttle posiition sensor. i replaced that sensor twice as well as pretty much every other sensor under the hood.

    since i plan to daily drive it in colorado this winter, i decided to start over from the "null" point. new timing belt corectly positioned, water pump, etc. this didn't change the way the engine ran, so i decided to replace the wiring harness and dme with one from a parts car. while i was in there, i pulled off the intake manifold to replace the gaskets and to paint.

    i started putting it all back together yesterday and i was noticing that the plug for the tps sensor and idle control valve are in the same location on the harness and also appear to be the same plug. this makes me wonder if the previous owner had these two plugs hooked up backwards? i have not had the chance to check the etk and will do so shortly. i was just wondering if any other members have had this experience?
    sigpic
    Gigitty Gigitty!!!!

    88 cabrio becoming alpina b6 3.5s transplanted s62
    92 Mtech 2 cabrio alpinweiss 770 code
    88 325ix coupe manual lachsilber/cardinal
    88 325ix coupe manual diamondschwartz/natur
    87 e30 m3 for parts lachsilber/cardinal(serial number 7)
    12 135i M sport cabrio grey/black
  • flyboyx
    R3V OG
    • Sep 2008
    • 8371

    #2
    booger butt?
    sigpic
    Gigitty Gigitty!!!!

    88 cabrio becoming alpina b6 3.5s transplanted s62
    92 Mtech 2 cabrio alpinweiss 770 code
    88 325ix coupe manual lachsilber/cardinal
    88 325ix coupe manual diamondschwartz/natur
    87 e30 m3 for parts lachsilber/cardinal(serial number 7)
    12 135i M sport cabrio grey/black

    Comment

    • efficient
      No R3VLimiter
      • Feb 2012
      • 3312

      #3
      I don't think so, usually when I unplug the icv or forget to reconnect the icv the car won't want to stay on or start. Maybe your afm is no good. Maybe dirty fuel filter

      Comment

      • nando
        Moderator
        • Nov 2003
        • 34827

        #4
        the plugs are physically the same. it wouldn't be easy to do but it's possible.
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