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D4 Light Blinking

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    #1

    D4 Light Blinking

    Before i get flamed for this let me say i read the writeup on this and couldnt find the symptoms im having. so, i just recently bought a 92 EX with the F22A6 and the d4 light blinks. It will drive fine in first and reverse, but once it shifts out of first, its like the car shifts to fourth. is this the TCU? or something more serious?


    Originally posted by scudweiser
    i farted while i was getting head once, i was drunk.
    Tags: None
    #2
    Yeah it could be the TCU. And yeah it could be something more serious. U can't tell really without diagnosing it a bit more. I believe u can pull the code, tho I'm not sure how u do that with the tranny. I think its just like the ECU, there might be a plug of some sort u can jump and pull a code from. I'm sure somebody will chime in here with a better idea of how to do that...

    Comment

      #3
      You pull the code the same way as you pull the CEL code. The process is in the stickies in every "technical" section of this site. The flashing D4 is indicating an error code... which means the TCU is doing what it should be doing.

      Why does everyone always want to replace their TCU when this happens?






      Comment

        #4
        Originally posted by deevergote View Post
        Why does everyone always want to replace their TCU when this happens?
        The same reason everybody wants to replace the main relay when their car doesn't start. IDK, I think its just wishful thinking for the most part. The TCU is easy and cheap to find and replace.

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          #5
          I had this happen a couple weeks ago, check the code and look it up check on the stickies like deev said . Mine was the transmission speed sensor. the wires were cut through somehow. good luck.
          http://www.cb7tuner.com/vbb/showthread.php?t=177927 <MY BUILD PROGReSS
          Originally posted by deevergote
          it won't be because cb7tuner told him to! It'll be because it's time to feed the trouser snake...

          Comment

            #6
            Originally posted by HardInThePaint View Post
            The same reason everybody wants to replace the main relay when their car doesn't start. IDK, I think its just wishful thinking for the most part. The TCU is easy and cheap to find and replace.
            Yeah, but if the TCU is flashing an error code, it's doing what it's supposed to do. Replacing it will only result in the new TCU flashing the same code, unless IT is broken and not reading the error.

            Replacing a TCU for giving you an error code would be like killing the pizza delivery guy because the person that made the pizza always gets it wrong. The next delivery guy won't bring you the right pizza if the same person is making it. Don't kill the messenger. Go for the actual source of the problem.






            Comment

              #7
              so i pulled the codes and i got 5 and 7

              5-Shift Lever Position Switch circuit shorted.

              7-Shift Solenoid 'A' circuit open or shorted.

              How do i got about fixing these?


              Originally posted by scudweiser
              i farted while i was getting head once, i was drunk.

              Comment

                #8
                really need help


                Originally posted by scudweiser
                i farted while i was getting head once, i was drunk.

                Comment

                  #9
                  Do u know where these things are located?

                  Comment

                    #10
                    i have an idea of where the solenoids are. are they the round like capsule looking things on top of the tranny? i have no idea about the other thing though.


                    Originally posted by scudweiser
                    i farted while i was getting head once, i was drunk.

                    Comment

                      #11
                      so, i figured out where the shift solenoids are. where the hell is the other thing? the shift position sensor??????


                      Originally posted by scudweiser
                      i farted while i was getting head once, i was drunk.

                      Comment

                        #12
                        I believe its in your shifter console.

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