T14PPA Posted October 28, 2011 Share Posted October 28, 2011 My speedo stopped working yesturday and because its automatic the over drive button keeps flashing. Anyone had the same problem? Is it the speed sensor Link to comment Share on other sites More sharing options...
peter richards Posted October 28, 2011 Share Posted October 28, 2011 my od off light flashes , the speedo stick if you tap the glass it might pick up mine does , as for the light flashing seems to be a long saga as to how to fix it Link to comment Share on other sites More sharing options...
gjp Posted October 29, 2011 Share Posted October 29, 2011 When my speedo stopped working it turned out to be a loose wire were the speedo converter was fitted. Link to comment Share on other sites More sharing options...
Bossco Posted October 29, 2011 Share Posted October 29, 2011 Mine stopped working just the other week. Must have been a loose wire cos we took the clocks out and put them back in and it started working no problem. Link to comment Share on other sites More sharing options...
T14PPA Posted October 29, 2011 Author Share Posted October 29, 2011 When my speedo stopped working it turned out to be a loose wire were the speedo converter was fitted. where is the speedo converter fitted? is it behind the odometer? Link to comment Share on other sites More sharing options...
T14PPA Posted October 29, 2011 Author Share Posted October 29, 2011 Mine stopped working just the other week. Must have been a loose wire cos we took the clocks out and put them back in and it started working no problem. was yours auto? because my auto box has been playing up because of the speedo? Link to comment Share on other sites More sharing options...
gjp Posted October 30, 2011 Share Posted October 30, 2011 where is the speedo converter fitted? is it behind the odometer? Yep it's behind the cluster on the left hand side connected to the odometer. Link to comment Share on other sites More sharing options...
Bossco Posted October 30, 2011 Share Posted October 30, 2011 was yours auto? because my auto box has been playing up because of the speedo? Yes mine is an auto. And funny you should mention it but my box has been a little funny. It will disengage from reverse when it's cold. It engages again after about 10 seconds. I never thought it was related to the speedo though. Link to comment Share on other sites More sharing options...
Guigsy Posted November 7, 2011 Share Posted November 7, 2011 Drivers footwell are where the fuses are. A pita to get at. Could be speedo converter too. Mine gave up recently and speedo didn't work Link to comment Share on other sites More sharing options...
black_widow87 Posted November 7, 2011 Share Posted November 7, 2011 Mine wasnt working this morning when i started the car think im going to rip the dash out this week to see if there are any loose wires. Link to comment Share on other sites More sharing options...
Guigsy Posted November 7, 2011 Share Posted November 7, 2011 Sort of. Another was fitted which then also went pop almost right away but it was old and 2nd hand. It was taken out and is just in kph at the mo. Waiting for the time to fit the new one Link to comment Share on other sites More sharing options...
stevie_b Posted November 8, 2011 Share Posted November 8, 2011 OK I never got a chance to look for the fusebox lastnight but my OD light is now flashing so it has to be the speedo cable that everyone is talking about, my mileage isn't going up which is a little worrying... Are the KPH to MPH converter kits expensive? All your problems are down to a single cause: the speedo isn't getting an speed signal into it, possibly due to a faulty speed converter (good ones are probably just shy of £100 approx. Cheap ones can be had for a lot less but they have minor but annoying side-effects). The odometer and the O/D light are "downstream" from the speedo, so when the speedo doesn't work, neither will these things. You'll also find your ECU has logged a code 42 error: again, it's all down to the same single cause. Link to comment Share on other sites More sharing options...
stevie_b Posted November 9, 2011 Share Posted November 9, 2011 so my speed converter is fried! :[ owel, i'll probably just go for one of the £30 ones off of ebay, or should i avoid them? Your speed converter is the most likely cause. The sparking you saw suggests something was shorting out, but that could have been almost anything. It's most likely to be part of the loom that's been fiddled with, e.g. the speed converter. As for the £30 converters: I wouldn't want to fit one to my car unless I heard from reliable members on here that the specific model I was about to buy worked well, and didn't muck up the ancilliaries. There's more to speed conversion than just making the speedo show a different number. The ECU uses the speed to work out how much power steering assistance to use, how to control the overdrive AFAIK, etc. If you like having over-assisted power steering even at high speed so that you get no feeback through the wheel, then crack on and buy a cheap converter. Link to comment Share on other sites More sharing options...
T14PPA Posted November 20, 2011 Author Share Posted November 20, 2011 i thought the speed converter was behind the actual speedo? behind mine is a little black box with wires going in to the back of the speedo. Also one of the wires is not attatched to anything. dont know if this should be like this Link to comment Share on other sites More sharing options...
stevie_b Posted November 20, 2011 Share Posted November 20, 2011 The speed converter can be anywhere. They're often floating behind the dash somewhere between the speedo and the odo. Link to comment Share on other sites More sharing options...
Suprab1 Posted March 24, 2013 Share Posted March 24, 2013 I see a few people had this fault. Was all of yours speed converter related? I have a post but can't get an answer so maybe a little input from some of you that have had the problem. Here's my post: Since i bought my jdm tt6 8+ years ago it has read speed & distance in miles. Since the car was left in the garage for a few months i have had no speed or distance reading on my car. I have stripped the dash looking for a speed converter but can't find nothing at all. Looking at the ecu the pink wire at the top right has a green wire with speed sensor wrote on it bridged into the pink but is only about a foot long & left under the carpet going no where. I dyed my carpet black a few years ago & noticed this wire back then but all was working fine so thought nothing of it. Any ideas what way my car must be reading miles or where else i can look for a converter? Link to comment Share on other sites More sharing options...
T14PPA Posted March 24, 2013 Author Share Posted March 24, 2013 Ive heard it can be in the footwell aswell but mine was behind the dash. Definately the converter Link to comment Share on other sites More sharing options...
Suprab1 Posted March 24, 2013 Share Posted March 24, 2013 Ive heard it can be in the footwell aswell but mine was behind the dash. Definately the converter I have followed the wires from behind the clocks to the ecu & can't see anything I don't understand what way it can be wired because i thought it had to be connected to the pink wire on the ecu? Doesn't make sense to me, it read in MPH but no signs of nothing wired to ecu? I'm going to have to look at this again. Am i right in thinking a speed converter is about wallet size? Link to comment Share on other sites More sharing options...
T14PPA Posted March 24, 2013 Author Share Posted March 24, 2013 My speed converter was the size of 2 stamps lol Link to comment Share on other sites More sharing options...
Suprab1 Posted March 24, 2013 Share Posted March 24, 2013 My speed converter was the size of 2 stamps lol Ah crap life just got worse, now i'm looking for a needle in a haye stack lol. Can you remember if yours was wired into the ecu or could it be wired away from the ecu somewhere? Sorry to keep throwing questions but this is doing my head in this weekend. Link to comment Share on other sites More sharing options...
stevie_b Posted March 24, 2013 Share Posted March 24, 2013 The speedo converter will almost certainly be wired in behind the speedo somewhere. If your speedo doesn't work, the signal is being lost close to its source (it goes to the speedo first, the speed signal actually reaches the ECU last). Link to comment Share on other sites More sharing options...
Suprab1 Posted March 25, 2013 Share Posted March 25, 2013 The speedo converter will almost certainly be wired in behind the speedo somewhere. If your speedo doesn't work, the signal is being lost close to its source (it goes to the speedo first, the speed signal actually reaches the ECU last). Havw you got a wiring diagram to show me which wires are what because there is no sign of a speed converter that i can see. I know there must be one but i'm thinking the wire that's left at the ECU must be for another one which was in it before, now god knows where they have hidden this one. Link to comment Share on other sites More sharing options...
stevie_b Posted March 26, 2013 Share Posted March 26, 2013 Link to wiring diagram on post #17: http://www.mkivsupra.net/vbb/showthread.php?274212-1996-Supra-N-A-5spd-problems!-Check-Engine-and-!/page2 The diagram shows you how to wire up a TRL speed converter, but it also does a good job of explaining what some of the wires going into the speedo and ECU do. If your pink wire in the ECU goes nowhere, you should be getting a code 42 error. Do your error warning lights work? Anyway, that's a secondary issue..... The speedo gets its input signal on pin 5 (blue with red stripe) of the speedo plug. Follow what that wire is connected to. It often leads to the speed converter. Link to comment Share on other sites More sharing options...
Suprab1 Posted March 26, 2013 Share Posted March 26, 2013 Link to wiring diagram on post #17: http://www.mkivsupra.net/vbb/showthread.php?274212-1996-Supra-N-A-5spd-problems!-Check-Engine-and-!/page2 The diagram shows you how to wire up a TRL speed converter, but it also does a good job of explaining what some of the wires going into the speedo and ECU do. If your pink wire in the ECU goes nowhere, you should be getting a code 42 error. Do your error warning lights work? Anyway, that's a secondary issue..... The speedo gets its input signal on pin 5 (blue with red stripe) of the speedo plug. Follow what that wire is connected to. It often leads to the speed converter. Yeah i'm getting that error code since i lost my speedo & all my warning lights work. Thanks for the diagram & help, i will print it & look into this again at the weekend. Link to comment Share on other sites More sharing options...
Jive Posted April 28, 2013 Share Posted April 28, 2013 Mine stopped working just the other week. Must have been a loose wire cos we took the clocks out and put them back in and it started working no problem. Can confirm that this above has just resolved my issue. Stopped working about 2 weeks ago (not using daily at the mo), took the dash apart, checked the fuse behind the drivers side kickplate (number 14 : 10amp fuse), found the converter/delimeter, checked power to it and all ok. Looked on here at this thread, put the clocks back in, reversed off the drive and the needle started to move. Talk about infuriating as absolutely no explanation as to why it would suddenly start working again. Anyways, now a happy bunny Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now