yeomans

The Earth is good. That ECD test is very handy, came up with no faults ie. constant flashing. Did then disconnect a sensor to check the ecd test was working and it was so then reset the ECU. Having delved more into various Electrical connection points we have found a large multi-pinned connector on the side of the gearbox, attached to a unit which we then guess is something to do with overdrive. Thats the next step; to check the connections and possibly take it off. I will refer to this unit as T11 as it is the main number on it. It has a total of 9 wires going to it , When we remove the connector there are no lights on the dash so it is a key component. Well my girlfriend loves the old 1981 TR7. Nice to have a convertible to play with during this limited british Summer. Cheers Simon

Hi Ledgend Have done a fairly extensive visual check of wiring/looms at steering column, no obvious problems. Will try the Earth tomorrow. The ECD test sounds like a plan, will do that too. Reporting back in a few days as my girlfriend has just bought an old Triumph TR7 which I guess is going to need a bit of attention. Cheers for your help so far.

Hi. Think I have a problem with overdrive wiring. Does anybody know the route of the two wires(blue+white/white+black) that come from the gear knob on an auto Thanks

Hi Ledgend. Great thread and excellent you are offering...here's one for ya. I have been helping my father with this and its getting very frustrating, especially with no wiring diagram. Thanks for posting relay locations that will help us too. HIS ADVERT IS ON http://www.teoc.ws/ (user PaulY) i have a 1994 Lucida diesel auto. Great vehicle - but it has stopped running! I have gone through all the threads on here for an answer and followed various advice given here, but I still cannot get it to go. here is the full history of this:- For no apparent reason, the overdrive dropped out on a short journey. i stopped at my destination then returned home and the overdrive was fine. the next day the same thing happened. worked perfectly after that, but i took to my local garage to see if there was a problem but the computer had not recorded any incident. A week later i turned off the main road into a lane and switched off the overdrive and the engine cut out. I mention this as I cannot help but think it is related. Next day i did the research and checked the fuses and the relays. I noticedAttached Image: Image00001.jpg some lights out on the dashboard notably the engine management and the glow plug lights. However every now and then they would light up and twice when they were alight it started but only ran for about 30 seconds. Since that, it hasn't done it. Local garage had it for a while and tested all feeds but eventually gave up as there is no wiring diagram available. Now i have, again from advice here, changed the ecu - got the right one from a scrapyard! That got the lights on the dashboard working. relays are fine. fuses fine. I changed the stop solenoid and the spill valve. note - neither of these has 12v going to them; if i provide power they operate ie i can hear a click when power goes to them, but still won't start. As i was trying to start one time only, the engine fired a few times but that was all. there are three of these solenoids; the large one which i assume from what has been said on this site is the spill valve, and this has a 10 volt supply going to it - which seems an odd figure. the smaller one i assume is the stop valve and has no power going to it, and another small one underneath which has no power going to it but does click if i provide power. All very odd! Therefore I had an ECU which was faulty, a spill valve and stop valve which were faulty - the old ones do not click when i put power to them. I have disconnected the lead at the rear of the gearbox also which i assume is the power to the overdrive as i am sure this is related. dont know what else to test. also don't know what supply voltages should be present prior to starting. All suggestions welcomed! Cheers