dangerous brain Posted May 2, 2004 Share Posted May 2, 2004 I just fitted the trl delimiter and speedo conversion box in accordance with the instructions provided. Unfortrunately for some reason the delimiter isn't working?? I GPS'd it to be sure but the limiter still kicks in bang on 112 mph. I used the yellow wire like it says to and i cut the pink speed input line to the ECU as instructed ie the second pin in form the top left of the box. So how is the ECU getting a 112 mph signal when That line is cut and the trl yellow line output is in its place? Also the reason I decided to do the delimiter/speedo conversion was that the speedo used to trip out under heavy acceleration or cornering leaving a zero reading until cesation of acceleration or steering. I put this down to a cheapo converter. The TRL one still does it though so I did a bit of diagnosis and the signal supply goes no volts when the speedo trips so therefore I am thinking that the signal itself is corrupt. Thing is the speed sensor affects the steering and stuff but there doesn't seem to be any problem with that side of things when the speedo trips out. ANY IDEAS?? I am going crackers right now This is a picture of the wires at the ECU Wires at ECU Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 2, 2004 Author Share Posted May 2, 2004 Oh comeon someone must have an idea about this. If someone that has a TRL unit fitted would they mind popping back the passenger carpet taking off the plastic ecu protective cover plate and having a butchers and seeing if their wiring is as in my photo. Pretty please with a cherry on top. Quote Link to comment Share on other sites More sharing options...
matt Posted May 3, 2004 Share Posted May 3, 2004 You seem to have wired it correctly. Don't like crimps myself.... Did you remove the cheapo version? I ask , cos on my previous soop the converter was hooked straight into the wire from the speed signal sensor on top of the gearbox.. the weather had got to it and caused similar probs. Maybe pickup the speed signal wire from somewhere else? Or try another 12v + source? Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 3, 2004 Author Share Posted May 3, 2004 Yeah I removed the cheapo speed converter it was linked in with scotch clips hence I thought that perhaps thats what was causing the trip out. Later on I am gonna check see if the 12 volt supply to the TRL box is trippin out and hence removing the signal. I don't know where the speed senor is but there is a couple of blue and red striped wires with the double silver band on going into a plug on the right hand rear side of the auto gear lever assembly and as I am assuming that speed will be picked up in the drivetrain it may be somewhere around that area. Regards the delimiter if I have put the input signal to the ECU in the right place how comes that yellow wire is still carrying the 112 mph cut out signal? Surely that means there is a fault with the box or will the speedo conversion which seems to work as advertised be affecting the signal on the yellow line. Seems a bit strange to me that the ECU is still getting precisely the same signal it used to get from the old sensor line. Only thing I can do with this is get hold of the voltage chart that the yellow line is meant to put out so I can figure out if its the box or not. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 5, 2004 Author Share Posted May 5, 2004 Right spoke to the TRL guy and he is pretty sure going on the description that I have wired it up right. I am gonna do a bit more diagnosis before I point the finger at the box as these bits of kit so far are reportedly 100% reliable!!! He said he would send me a new box before I said anything but I am gonna do a bit more work to see if its me biffing up somehow or the car causing it. Will post back what happens in case its a car fault and it happens to someone else. Quote Link to comment Share on other sites More sharing options...
Timwildman Posted May 5, 2004 Share Posted May 5, 2004 I dont mind coming round and giving you a hand if you want, might be worth checking wires, end to end. Just in case someone has been in there doing other mods. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 5, 2004 Author Share Posted May 5, 2004 Sometime saturday OK?? Quote Link to comment Share on other sites More sharing options...
Timwildman Posted May 5, 2004 Share Posted May 5, 2004 Bloody hell that was quick, maybe might be working 8-4ish so i'll let you know Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted May 5, 2004 Share Posted May 5, 2004 id help u, but i aint got a clue! hope u get sorted, i wana kick you good and proper no excuses!! your problem sounds weird, might sound weird but check ur earth as when the car jolts back on heavy accerlaration perhaps it knocking it slightly loose and thats the reason the steering aint effected as that still gets the correct signal, it just a idea:stupid: Quote Link to comment Share on other sites More sharing options...
SimonB Posted May 5, 2004 Share Posted May 5, 2004 Ok, still none the wiser about this, can't think what could be the problem, but here's some links that might help. First of all, terminals on the ECU. Although that looks OK. Here's the position of the speed sensor:- Here's the wiring for the odo etc. And here is the ECU where the speed signal goes in. There is a second speed signal that goes into the ECU, but it is used by the auto transmission to figure out what gear to use. I suppose it's possible the ECU could be deciding the first speed signal is knackered and falling back on the second one? Seems unlikely though. Quote Link to comment Share on other sites More sharing options...
THOR Racing Posted May 6, 2004 Share Posted May 6, 2004 Always best to ask me first I am approachable and will offer FREE replacements if anything is suspected (even if it is your wiring in the end) I'd rather have a repuation for helping and be overly helpful. The DSC's don't go wrong as such it's just in a batch of 300 some of them may have manufacturing faults (shorts on wires etc) that is unavoidable. The design is 100% reliable. Regards Pete Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 6, 2004 Author Share Posted May 6, 2004 Originally posted by TRL Performance Always best to ask me first I am approachable and will offer FREE replacements if anything is suspected (even if it is your wiring in the end) I'd rather have a repuation for helping and be overly helpful. The DSC's don't go wrong as such it's just in a batch of 300 some of them may have manufacturing faults (shorts on wires etc) that is unavoidable. The design is 100% reliable. Regards Pete Yup did that had that response from you which is why I am determined to be 100% sure I haven't made an ass of it all first fella. Am just awaiting some decent weather so I can crack on with a bit more diagnosis work. As I say up there somewhere I really don't wanna put you to any trouble over this as you have been so helpfull. If I can ascertain for certain that everything at my end (and I mean everything) is working as advertised first then I shall send ya back the box to see if its faulty or not. No sense in me gettin another box if there is a problem at this end and still having to find that problem. I hope I didn't at any point give the impression I was dissin TRL anywhere. I only posted this thread as it was a bank holiday weekend and I am sure that you take at least one day off a year lol. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 6, 2004 Author Share Posted May 6, 2004 Right I fixed it and yes the box was spot on 100% perfect as always!! Many thanks to Pete at TRL. I knew if I kept pluggin away I would sort it. It was a dodgy earth!! Now with my knowledge of electrics you would have thought that might have occured to me first as intermittent faults like this usually are dodgy earth related. The fact that the TRL box is so reliable was why I insisted on not being sent a new box. I hard earthed both the original feed from the speedo I had used and the TRL box to the chassis and lo and behold all my faults just dissapeared. One quick point I would like to make here is that on my car the 12 volt supply on the odo feed which I was going to use next as my 12 volt supply to the box isn't isolated by the ignition and is in fact a permanent 12 volt feed. I assume this is the case to keep the door open warning on the warning panel? well thats what my shed does anyway. Summat else cooky I noticed was that the stereo and cigarette lighter feed still seeped through half a volt ish with the ignition off any ideas anyone?? Thanks for the help big an small and now I promise not to abuse the extra leptons I have been granted Much!!!!!!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Timwildman Posted May 6, 2004 Share Posted May 6, 2004 Your little voltage is prob comming from the stero, there maybe some kind of smoothing cap in there, just that discharging. Quote Link to comment Share on other sites More sharing options...
SimonB Posted May 6, 2004 Share Posted May 6, 2004 Good stuff. We'll have to find something else to take the piss out of you for now you're not stuck at 112mph won't we? Shouldn't be too hard... Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted May 6, 2004 Share Posted May 6, 2004 HOLY BLOODY SHIT I WAS RIGHT!! THIS THREAD MUST REMAIN FOR YEARS all i got to say is im on the look out for a red supra :flame Dev simon - his cars red....enough said Quote Link to comment Share on other sites More sharing options...
Timwildman Posted May 6, 2004 Share Posted May 6, 2004 Originally posted by whitesupraboy2 all i got to say is im on the look out for a red supra :flame Dev simon - his cars red....enough said just 3 words: WHITE FORE ARM Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 6, 2004 Author Share Posted May 6, 2004 And what ya gonna do when you do see a red supra??? You can't outbrake me you can't outdrive me and now you can't out top speed me either. And thats just me if you are unfortunate enough to come across the real brain she can drive better than me so the only possible outcome is you gettin owned!!! Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted May 6, 2004 Share Posted May 6, 2004 i wont get owned...never by another supra...not yet and never... i said never!!!!!!!! although i do seem to miss 2nd in my little drags from lights tim,tim,tim....we gonna have to have a chat Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted May 6, 2004 Author Share Posted May 6, 2004 Hands up everyone if you have gone off the road recently due to driver error!! Hey you boy white supra boy GET YOUR HAND UP!!! Nuff said I reckon. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.