jackso11 Posted June 28, 2019 Author Share Posted June 28, 2019 Problem solved! Second ECU tested that has been kindly loaned to me by Scooter and the car is running perfectly. So now I just wish I hadn't swapped my ECU with Keron for the mines ECU that doesn't fire on one cylinder Anyone know who can fix it? Quote Link to comment Share on other sites More sharing options...
Scooter Posted June 28, 2019 Share Posted June 28, 2019 Someone looked at the one of mine you've got but could see anything obvious.....others with leaking capacitors have had better success. I suggest opening up yours and looking for burnt bits....link pending Quote Link to comment Share on other sites More sharing options...
Scooter Posted June 28, 2019 Share Posted June 28, 2019 Some info here....... http://www.mkivsupra.net/vbb/showthread.php?348640-TT-Auto-not-shifting-in-4-no-manu-light&highlight=repair Quote Link to comment Share on other sites More sharing options...
Scooter Posted June 28, 2019 Share Posted June 28, 2019 The High Ripple Current capacitors in the ECU that leak over the board can cause the OD light to flash and produce error codes, interestingly both ecus that have done this on mine worked fine from cold but then after a period of driving start to mess around causing the OD light to flash and the clue if you know what it smells like, is a whiff of electrolyte cooking from the caps. This could and I emphasise the could, be your OD flashing problem. . Shane are you experienced in self repair or at least know where these capacitors are specifically on the board? The one Adam has of mine is not shifting into 4th gear (otherwise ok hence why I sent it to allow him to test), but no sign of board burn and a pcb specialist couldn't see anything untoward, but offered a resoldering service (I declined as I knew about possible capacitor issues and so thought it unlikely to fix it?). Quote Link to comment Share on other sites More sharing options...
Shane Posted July 1, 2019 Share Posted July 1, 2019 Shane are you experienced in self repair or at least know where these capacitors are specifically on the board? The one Adam has of mine is not shifting into 4th gear (otherwise ok hence why I sent it to allow him to test), but no sign of board burn and a pcb specialist couldn't see anything untoward, but offered a resoldering service (I declined as I knew about possible capacitor issues and so thought it unlikely to fix it?). I have repaired one of mine and am about to embark on a ecu from a LS400 V8 that my son is running in his Supra. I have another here with exact same faults as the first one that failed and that was flashing od light and a sulfurus smell when hot which I am going to relaplace the capacitors. However, on both of these ECU it was clear the caps were failing, in that they had started to leak. Its a little tricky to do, but not rocket science with the plated through holes that link the tracks on both sides of the PCB. I have a photo somewhere that showed the electrolyte oozing onto the pcb from the cap. I will see if I can find it and post. These caps are a specific type and you must use the correct type with a low ESR https://xtronics.com/wiki/Capacitors_and_ESR.html On the one I did I simply did a blanket change of all electrolytic capacitors, from memory there's 8 in total, possibly 9. I think though, Adam's ecu possibly has a different fault, for one cylinder to not to be firing sounds to me as a driver transistor or maybe a dry joint, but note you mention the board has been checked for this. Quote Link to comment Share on other sites More sharing options...
Shane Posted July 1, 2019 Share Posted July 1, 2019 https://1drv.ms/f/s!AhecVC-OlL0riIURfv-CHBpoDnkLGA https://photos.app.goo.gl/Yp8pDhmXfVRVXXfq9 Couple of pics and film of mine Quote Link to comment Share on other sites More sharing options...
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