tintinmt Posted January 21, 2020 Share Posted January 21, 2020 I read a post on FB that N/A Auto ECUs particularly are prone to failure. What would the options be if an ECU failed? Are new parts available? Is refurbishment possible? Would an aftermarket engine management system be a better option? Quote Link to comment Share on other sites More sharing options...
Lee P Posted January 22, 2020 Share Posted January 22, 2020 Most of the early stock ecus can have issues, the Autos suffer worse The capacitors in the ecu will leak and fail as they get old which will cause gearbox control issues and running issues They can be refurbished with the capacitors replaced. Most ecu repair specialists can do this job but they have to use the correct parts Quote Link to comment Share on other sites More sharing options...
tintinmt Posted January 22, 2020 Author Share Posted January 22, 2020 Thanks Lee. Can anyone recommend an ECU repair specialist from experience? Quote Link to comment Share on other sites More sharing options...
Lee P Posted January 22, 2020 Share Posted January 22, 2020 I used these guys before and they are pretty good https://www.ecutechnologies.co.uk/ Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted January 22, 2020 Share Posted January 22, 2020 Thats good to know Lee Quote Link to comment Share on other sites More sharing options...
tintinmt Posted January 23, 2020 Author Share Posted January 23, 2020 Great. Thanks Lee. I will give them a shout. Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 5, 2020 Author Share Posted February 5, 2020 Ecutechnologies were unable to repair my ECU, although they were good otherwise. so.... I am looking for a used ECU - of course it has to be the right one for N/A Auto. I am told that the part is not available new anymore. Any other ideas? Quote Link to comment Share on other sites More sharing options...
SPG Posted February 6, 2020 Share Posted February 6, 2020 Keron perhaps? Quote Link to comment Share on other sites More sharing options...
Scooter Posted February 6, 2020 Share Posted February 6, 2020 any other ideas? pm Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 6, 2020 Author Share Posted February 6, 2020 Thanks. Search ongoing. Quote Link to comment Share on other sites More sharing options...
Dave Posted February 8, 2020 Share Posted February 8, 2020 Thanks Lee. Can anyone recommend an ECU repair specialist from experience? Mines gone twice now took it to my local computer repair guy replaced the caps re lacquered the board cause it leaked ,charged me 20quid happy days, ecu specialist wanted 70 plus parts . Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 8, 2020 Author Share Posted February 8, 2020 Mines gone twice now took it to my local computer repair guy replaced the caps re lacquered the board cause it leaked ,charged me 20quid happy days, ecu specialist wanted 70 plus parts . That's so much cheaper than I am being quoted. Maybe for a different level of repair? I have had it rejected as unrepairable one - They would have charged about £120. I have two new quotes based on pictures of the damaged area in mine. One is $300 (USA) and £250 from a UK ECU repairer. I have not yet found a used working replacement, but have heard of one that may be available for £250. Based only on other ECUs available, I would have thought it worth more like £125? Anyway, my thinking at the moment is that I would rather get mine repaired thoroughly as surely all the used one will suffer the same fate eventually? Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 20, 2020 Author Share Posted February 20, 2020 I have now had my ECU repaired by Avilec Ltd on the Isle of Wight. Total cost £312 - gulp. Apparently multiple capacitors had to be replaced and tracks repaired. In the month I have been looking, I have only heard of the possibility of one used ECU - and that was £250. Any used ECU is likely to need repair if not done already. This repair comes with a 2 year guarantee, which seems quite reasonable. Quote Link to comment Share on other sites More sharing options...
Phil-M Posted February 24, 2020 Share Posted February 24, 2020 I'm in a similar situation with an NA Manual. Car wouldnt start after being stood a while. Diagnosed as ECU. Got a 2nd hand replacement £150 delivered (seen some sell for £100 and some asking £250..!!) Anyway replacement ECU fitted car started but not running right. Idles at 2k rpm ish. Misfire etc.. If te ecu is in its place the car wont start. If hold it vertically the car starts. Had all wiring checked out and it seems ok and prblem coming back to a faulty (used) ECU. Apparently not sending a signal to the MAP sensor either. 1 Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 24, 2020 Author Share Posted February 24, 2020 In my limited experience the common issue is one of the capacitors leaking. If you open up the ECU I think you can see the leak(s) and consequent damage. Some failures seem to be easier to repair than others. I think you should be able to get your unit tested with a good level of certainty of diagnosis. Quote Link to comment Share on other sites More sharing options...
Konrad Posted February 25, 2020 Share Posted February 25, 2020 (edited) I'm in a similar situation with an NA Manual. Car wouldnt start after being stood a while. Diagnosed as ECU. Got a 2nd hand replacement £150 delivered (seen some sell for £100 and some asking £250..!!) Anyway replacement ECU fitted car started but not running right. Idles at 2k rpm ish. Misfire etc.. If te ecu is in its place the car wont start. If hold it vertically the car starts. Had all wiring checked out and it seems ok and prblem coming back to a faulty (used) ECU. Apparently not sending a signal to the MAP sensor either. If 2 different ECU's giving similar problems, it can be more to do with wiring than anything else, especially if you need to hold it up for it to work. ECU inside is solid circuits, so should not make any difference what position it is on. If it idles at 2k its probably overfuelling, hence pops from exhaust, which might be mistaken with misfire. Also - Supra normally idles high when cold. Have you checked temperature sensor - one which feeds back to ECU? Is it still idle at 2k rpms when hot? Have you done pin test to pull out fault codes? I've got NA auto and NA manual ECU's here, both were working fine, only took them out when I was doing engine swaps to TT and later to V8. Edited February 25, 2020 by Konrad (see edit history) Quote Link to comment Share on other sites More sharing options...
Phil-M Posted February 26, 2020 Share Posted February 26, 2020 Mechanic checked it out and said no signal to map sensor hence idling high and running quite rich. !st ECU wouldnt start the car 2nd does but with issues. I'd possibly be interested in buying the NA Manual ECU off you however just going to see if I get hold of anyone to check the wiring before buying. Will PM you Quote Link to comment Share on other sites More sharing options...
tintinmt Posted February 26, 2020 Author Share Posted February 26, 2020 I think I would still get yours checked by an ECU specialist. At least open them up and have a look for leaking capacitors. Quote Link to comment Share on other sites More sharing options...
Dave Posted March 1, 2020 Share Posted March 1, 2020 I read a post on FB that N/A Auto ECUs particularly are prone to failure. What would the options be if an ECU failed? Are new parts available? Is refurbishment possible? Would an aftermarket engine management system be a better option? This the guy I used he is very good and very reasonable he also does 3D printing which is reasonable to give him a ring ,I’ve already spoken to him about helping club members out http://pcs-llanelli.co.uk/ Quote Link to comment Share on other sites More sharing options...
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