carl0s Posted February 11, 2007 Share Posted February 11, 2007 I have asked this before but didn't get any answers, so here goes again.. I can feel my J-spec car slip in and out of TC lockup at very-light-throttle cruising between about 56mph and 62mph. It's like a little gearchange is going on, quite frequently. I'm most sure my UK car didn't do this, and I would expect there to be some kind of fuzzy-logic in the ECU to make it basically stay in lockup with such light throttle at obviously cruising speeds. My speed convertor appears to be some weird rectangle box (labelled Inter**** (Interpro - ?)) with four wires attached directly to the screw terminals in the flexible flat pcb on back of the speedo gauges, and as far as I can tell, everything else works properly (active spoiler comes down when it should, and I don't see any other oddities with the gearbox). The car doesn't seem to have a speed limit either, as we hit an indicated 175 on the M6 toll road on the way to Flame and Thunder, but I've not actually looked for an SLD or anything. I'll be fitting my Thor FCD soon when the Fields harness arrives and will obviously have a closer look then. Can anybody shed any light? Quote Link to comment Share on other sites More sharing options...
terribleturner Posted February 11, 2007 Share Posted February 11, 2007 Mine was slipping in and out of Lock Up, but i put that down to all the changes i made after going single. I wonder if one of the plugs of the box has come loose and isn't making 100% contact. Quote Link to comment Share on other sites More sharing options...
carl0s Posted February 11, 2007 Author Share Posted February 11, 2007 Hmm. This car had a gearbox rebuild costing £1,400 not long before I bought it. It didn't need the rebuild, but the garage misdiagnosed the dodgy facelift engine-mounts as a dodgy gearbox. I suppose they could have done something funny whilst they were in there Keep the ideas coming please guys, I don't like the sound of the above Quote Link to comment Share on other sites More sharing options...
carl0s Posted February 11, 2007 Author Share Posted February 11, 2007 Mine was slipping in and out of Lock Up, but i put that down to all the changes i made after going single. I wonder if one of the plugs of the box has come loose and isn't making 100% contact. Oh hang on, when you said 'all the changes you made', did you just mean changes to the car? I thought you meant all the gearchanges you made with all that extra power, i.e. knackered box. Are the plugs easy to get to? Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted February 11, 2007 Share Posted February 11, 2007 First instinct would be the speed converter Carl. Either remove it completely or put a THOR one on. I've got a wiring diagram for an "Import Solutions" speed converter, if it's one of those. Dodgy connections and crap speed converters account for about 90% of all these type of problems Quote Link to comment Share on other sites More sharing options...
carl0s Posted February 11, 2007 Author Share Posted February 11, 2007 First instinct would be the speed converter Carl. Either remove it completely or put a THOR one on. I've got a wiring diagram for an "Import Solutions" speed converter, if it's one of those. Dodgy connections and crap speed converters account for about 90% of all these type of problems I think you're probably right Geoff, thanks. I'm fairly sure it was "Inter-something". It's a small aluminium box about the size of a cigarette lighter, with black and green painted lines down it, I think. I'll try to get a better idea what's wired up to what this week and think about grabbing a Thor unit. It's not as if this problem is really obvious, I think I'm just aware of it and I notice it - other people probably might not notice it immediately. Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted February 11, 2007 Share Posted February 11, 2007 Have a look here for a pretty good description of the workings of Toyota auto transmissions http://www.autoshop101.com/forms/h16.pdf Quote Link to comment Share on other sites More sharing options...
sypher_44 Posted February 7, 2009 Share Posted February 7, 2009 i have the same problem... and i have a odd looking speed converter in mine..... its really making me lose focus when it "jumps out off gear" al the time Quote Link to comment Share on other sites More sharing options...
Ian C Posted February 8, 2009 Share Posted February 8, 2009 The car doesn't seem to have a speed limit either, as we hit an indicated 175 on the M6 toll road on the way to Flame and Thunder It'll probably kick in at 180mph, as the ECU thinks it's 180kph due to the speed convertor. 180kph is the 112mph limiter. Mine was like that -Ian Quote Link to comment Share on other sites More sharing options...
sypher_44 Posted February 8, 2009 Share Posted February 8, 2009 how did you fix it ian? i dont have a speed delimiter but the car is stil going over 120mph... Quote Link to comment Share on other sites More sharing options...
TurboBrett Posted May 11, 2009 Share Posted May 11, 2009 sorry to dig up an old thread but this seems the most relevant, im going through the problems with my supe, i thought i had most sorted but as of yesterday they came back, i think my speed converter is mainly to blame but im curious about this gearbox lockup? right as im going up the gears in D (na auto) at light throttle it goes 1-2-3-4 but when im driving abit harder it goes 1-2-3 then clicks in to 4th but the revs only drop by 2-300rpm at tops but if i lift off it pulls fully into 4th, and when on the motorway i give it some gas to overtake it gives a good 'kickdown' but the box doesnt change down it just kicks the revs up and then hold them 2-300rpm lower that 3rd gear would, switching od off at this point kicks it down into 3rd it feels like it has a 3.5 gear witch i know it doesnt it only seems to do this when the O/D off light is flashing, it flashes randomly but once it starts it doesnt stop untill next restart i have searched alot but dont seem to be turning up answers anyone experienced similar? Quote Link to comment Share on other sites More sharing options...
leelbuk Posted May 12, 2009 Share Posted May 12, 2009 OD off light flashes when a speed cannot be detected from one of the speed sensors. It did this on mine and also gave me an engine warning light everytime I would reach over ~60-80mph somewhere. I think the error code points it to speed sensor 2 or something like that (sure someone will correct if wrong) I found it to be a lose wire from where the speed converter/delimiter was spliced behind the odometer. Quote Link to comment Share on other sites More sharing options...
TurboBrett Posted May 12, 2009 Share Posted May 12, 2009 OD off light flashes when a speed cannot be detected from one of the speed sensors. It did this on mine and also gave me an engine warning light everytime I would reach over ~60-80mph somewhere. I think the error code points it to speed sensor 2 or something like that (sure someone will correct if wrong) I found it to be a lose wire from where the speed converter/delimiter was spliced behind the odometer. cheers for that, my speed converter and delimiter are coming out this week, im convinced its them it did seem to cure it using the code 42 error fix i found but then it came back, i thought the gearbox problem was separate (if it is a problem) it bugs me lol im going to sort it one by one if it take for ever lol:d Quote Link to comment Share on other sites More sharing options...
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