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Thread: bidirectional control wrong heading

  1. #1

    Default bidirectional control wrong heading

    Whats up guys,
    I was diagnosing a coolong fan issue on a 97 f body lt1. I used bidir to command the fans on and it did not work. so I commanded the low speed fan and the a.i.r. pump came on. After verifiing that the problem was the relay the old way, I started checking the other headings in bidir. come to find out that the closed loop heading is the one commanding the fans on/off. as well as the high fan commandes the fuel pump. are you aware of this? Is there a fix?
    Thanks for the great support. let me know,
    madprof01

  2. #2
    Joe (Moderator) joecar's Avatar
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    Default

    Hmmm...
    Works for 98+ F/Y body and 03+ trucks.
    Must be something different about LT1...?

  3. #3
    Joe (Moderator) joecar's Avatar
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    Some of the bidir controls (MIL, fans, AIR, AC) work on the 3.4L V6 (RPO LA1).

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