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Random flashing d4 lights

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    #1

    Random flashing d4 lights

    Heres what happens

    If i start up my car and drive it for 5-15 minutes and then shut it off and turn it back on my d4 light will be flashing

    Basically i drove home from work and stopped for gas. I turned the car off and then flipped the key back to run to listen to music while the fuel pumped. The d4 light started blinking

    Today i drove it it to mcdonalds about 10 minutes away and parked to eat my food and it did it again

    if i let the car sit for 5-10 minutes it goes away

    it gives me goes 1, 2, 7, and 8

    When the light is flashing my car will only start out in 2nd gear if manually put into 2. If its put in d3 or d4 it will start out in 4th gear from a dead stop ( slow as balls ). If i put it into 1 it still starts out in 2nd

    Anyways what do you think the problem is?
    Tags: None
    #2
    That makes me think that its your tcu. Mine did that when I first got it.. though I'm not sire about the d4 light because the bulb doesn't work.. had the tcu rebuilt and good as new.
    92 Honda Accord LX - Sold
    2005 Nissan Altima 2.5S - Sold
    2007 Dodge Charger SXT

    Comment

      #3
      I had the same problem its the tcu

      Comment

        #4
        Sounds like that's the second tcu you have had that's died/dieing. You should already know your options.
        PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

        Comment

          #5
          Originally posted by cloudasc View Post
          Sounds like that's the second tcu you have had that's died/dieing. You should already know your options.
          With you posting your TCU fix thread everywhere, I think I'm going to try what you're suggesting.
          I have the exact same problem as above, except mine just recently started slipping.
          MRT
          37.5 MPG, AC on, cruising at 80.
          30.0 MPG, AC on, aggressively driving around 90.
          27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

          Lots of DIY videos specifically for our car

          Get some awesome wipers! <-- It's a DIY
          Originally posted by Tippey764
          I think driving your car naked will cause the engine to overheat
          Originally posted by deevergote
          sneaky motherfucker

          Comment

            #6
            Guys, when those capacitors or even solder points are getting old, you are not always going to see the obvious. Just like my brake lamp indicator. I took the black little box out from the rear tail light, solder it and it seems to fix that problem. I am going to do the TCU fix next week and be looking at the ECU as well.

            Comment

              #7
              Here's what my car was doing when I first got it.. It would start in second, skip D3 and go straight to D4 after a couple tries... turn it off and it'd start in 1 and go to D3....

              Had the TCU sent off and all capacitors and solder points replaced for only 60 bucks...
              92 Honda Accord LX - Sold
              2005 Nissan Altima 2.5S - Sold
              2007 Dodge Charger SXT

              Comment

                #8
                Originally posted by dysfunk View Post
                Here's what my car was doing when I first got it.. It would start in second, skip D3 and go straight to D4 after a couple tries... turn it off and it'd start in 1 and go to D3....

                Had the TCU sent off and all capacitors and solder points replaced for only 60 bucks...
                Can you post a link?
                MRT
                37.5 MPG, AC on, cruising at 80.
                30.0 MPG, AC on, aggressively driving around 90.
                27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

                Lots of DIY videos specifically for our car

                Get some awesome wipers! <-- It's a DIY
                Originally posted by Tippey764
                I think driving your car naked will cause the engine to overheat
                Originally posted by deevergote
                sneaky motherfucker

                Comment

                  #9
                  Again? Seriously?

                  God dammit.

                  Comment

                    #10
                    Originally posted by GeoffM View Post
                    Can you post a link?
                    My dad actually sent it off to one of his electronic nerd friends. I can see if i can get the information from him.. see if he'd like some business.
                    92 Honda Accord LX - Sold
                    2005 Nissan Altima 2.5S - Sold
                    2007 Dodge Charger SXT

                    Comment

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