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buzzing noise and sport shift light on

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    #1

    buzzing noise and sport shift light on

    i started my cb this morning [about 30f] and i herd a buzzing noise in the dash and sport shift light on .. i was lost if i put my foot on the brake or put it in gear the noise want away .. but the sport shift light stayed on, so i had to drive it . i drove down the road but no power ..mad.. i`m lost.. why me ... so i puled over turned the cb off and looked under the hood ..hummmmm ...hummmmm then i remembered about reading a post where some one had pulled the ecu fuse out waited 5 sec and put it back in .. so i did that and then it was like it never happened... all was good ...i drove it all day no problems
    i`m guessing it was a bad ground ......any help would be good for me
    Tags: None
    #2
    Might have wobbled loose or some dirt got in there. Clean it out and put some of that dielectric grease in there.

    Comment

      #3
      what the ground ? or fuse ? hi hi mj213

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        #4
        This has happened to me before. My TCU shorted, and resistors inside of it had fried.

        The buzzing is the relay of the shift interlock control unit going in and out.

        Replace the TCU with another 90-91 TCU - but be sure to open it up and check for fried circuitry (if you pick one up at a junkyard, to be sure it'll work!)
        My pictures/photos will return soon...

        Comment

          #5
          Originally posted by Joshy View Post
          This has happened to me before. My TCU shorted, and resistors inside of it had fried.

          The buzzing is the relay of the shift interlock control unit going in and out.

          Replace the TCU with another 90-91 TCU - but be sure to open it up and check for fried circuitry (if you pick one up at a junkyard, to be sure it'll work!)
          cool i got a replacement i got 4 weeks ago should i see if it happens more than 1 time? i got it of a 90 ex 4 door ..it had a hole in the block ,i`v got a 90 dx 4 door
          Last edited by Teddy; 12-18-2009, 12:58 AM.

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            #6
            Originally posted by Teddy View Post
            cool i got a replacement i got 4 weeks ago should i see if it happens more than 1 time? i got it of a 90 ex 4 door ..it had a hole in the block ,i`v got a 90 dx 4 door
            unfortunately, yeah

            open up the ECU/TCU kickpanel and pull the TCU out. if you smell around the connectors, it should smell like burnt electronics. if it doesn't, open it up and verify that it is indeed fried. then get back to us!
            My pictures/photos will return soon...

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              #7
              why? could it fry more things in my cb?

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                #8
                Originally posted by Teddy View Post
                why? could it fry more things in my cb?
                Honestly, I'm not entirely sure; but I doubt it. Just wanted to verify that it is indeed a fried TCU.
                My pictures/photos will return soon...

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                  #9
                  ok i could put the other one in tomorrow i have a pt6 ecu to put in also
                  thank you

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