stroker Posted September 11, 2018 Report Share Posted September 11, 2018 hi i have a problem with our engine at wot 4000 - 4100 rpm ... Suddenly cutoff with backfire ! ... when i check datalog i found something wrong with injector duty cycle jump to 400% and rpm to 24801 ! note: - rpm limit set at 5500 - map limit OFF also timing drop to 3 deg Quote Link to comment Share on other sites More sharing options...
Drexal Posted September 11, 2018 Report Share Posted September 11, 2018 Would be very helpful if you could attach a copy of the data log and current map Quote Link to comment Share on other sites More sharing options...
stroker Posted September 11, 2018 Author Report Share Posted September 11, 2018 also when i got this problem at same time i got trigger error log and file 2.llg old.pclr Quote Link to comment Share on other sites More sharing options...
Drexal Posted September 11, 2018 Report Share Posted September 11, 2018 I think your on the right track to answering your own question. If it had a trigger error than clearly that would cause some erratic issues with the RPM and Injector duty cycle. I'll have a look at the log and map when I get home. Any more information on engine / trigger setup ect? Quote Link to comment Share on other sites More sharing options...
stroker Posted September 11, 2018 Author Report Share Posted September 11, 2018 suzuki engine v6 .... 36 - 2 trigger ... waste spark ( atom ) also there another problem after drive car for 1 hour or less ... engine sound like 5 cylinder work only and lean on lambda ( 1.30 - 1.40 ) ... after wait 2 or 3 hour ... start very well ! Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted September 11, 2018 Report Share Posted September 11, 2018 Trigger scope IS THE ONLY WAY to diagnose trigger issues. Quote Link to comment Share on other sites More sharing options...
stroker Posted September 12, 2018 Author Report Share Posted September 12, 2018 @Ducie54 how is work and what i need ? do you have link for tools or info about that Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted September 12, 2018 Report Share Posted September 12, 2018 2 channel oscilloscope is the tool. You can plug them into either tablets or laptops. Quote Link to comment Share on other sites More sharing options...
stroker Posted September 12, 2018 Author Report Share Posted September 12, 2018 do you have a link for them ? Quote Link to comment Share on other sites More sharing options...
stroker Posted September 12, 2018 Author Report Share Posted September 12, 2018 I'm sure the problem is something else! not trigger ... check file plz Quote Link to comment Share on other sites More sharing options...
cj Posted September 12, 2018 Report Share Posted September 12, 2018 Your trigger error counter only goes up during the 1/2 second or so where your RPM jumps to an unrealistic value. Its almost certain you have triggering problems at this time. The trigger errors do not increase for the other 15 seconds of the log so its not that your trigger settings are incorrect, but more likely you have some sort of noise in the signal or maybe the crank sensor wired up backwards. A few of the toyota's run 36-2 reluctor triggers and if you have them wired backwards you get triggering issues just after 4000rpm, exactly like you are seeing here. Did you also have some kind of misfire about 3700rpm? your map signal moves by a couple points and the RPM looks to jump around by a couple hundred RPM as well. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 12, 2018 Report Share Posted September 12, 2018 As per Ducie's comment you need an oscilloscope to properly diagnose your trigger issue. It could be arming threshold, incorrect polarity or noise, an oscilloscope will show which of those it is. If you dont have one it will probably be best to go to a local auto electrician and get them to do a capture of the crank sensor signal for you. Quote Link to comment Share on other sites More sharing options...
stroker Posted September 12, 2018 Author Report Share Posted September 12, 2018 5 hours ago, cj said: Your trigger error counter only goes up during the 1/2 second or so where your RPM jumps to an unrealistic value. Its almost certain you have triggering problems at this time. The trigger errors do not increase for the other 15 seconds of the log so its not that your trigger settings are incorrect, but more likely you have some sort of noise in the signal or maybe the crank sensor wired up backwards. A few of the toyota's run 36-2 reluctor triggers and if you have them wired backwards you get triggering issues just after 4000rpm, exactly like you are seeing here. Did you also have some kind of misfire about 3700rpm? your map signal moves by a couple points and the RPM looks to jump around by a couple hundred RPM as well. yes it's toyota trigger .. no misfire note: when i use ecu customer ( that was tuned by another tuner .. there no problem at this point ( extremely rich ) ) 3 hours ago, Adamw said: As per Ducie's comment you need an oscilloscope to properly diagnose your trigger issue. It could be arming threshold, incorrect polarity or noise, an oscilloscope will show which of those it is. If you dont have one it will probably be best to go to a local auto electrician and get them to do a capture of the crank sensor signal for you. i try to increase arming threshold but same things ! ... maybe should be decrease 0 = 0.5 / 1000 = 1 / 2000 = 1.5 / 3000 = 2 / 4000 = 2.5 / 5000 = 3 / 6000 = 3 / 7000 = 3 Quote Link to comment Share on other sites More sharing options...
stroker Posted September 13, 2018 Author Report Share Posted September 13, 2018 Any another idea ? Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted September 13, 2018 Report Share Posted September 13, 2018 Maybe your flux capacitor is bad, Adam should be able to run you through how to test it. Quote Link to comment Share on other sites More sharing options...
Simon Posted September 13, 2018 Report Share Posted September 13, 2018 You are going to have to get a scope on to the trigger signals to see what is going on other wise we are just guessing. Quote Link to comment Share on other sites More sharing options...
stroker Posted September 13, 2018 Author Report Share Posted September 13, 2018 Guys Give us some perfect tool i can use for scope signal I found this tool : https://www.amazon.com/Oscilloscope-Multimeter-LIUMY-Professional-Scopemeter/dp/B071F1H3PG/ref=zg_bs_393269011_1?_encoding=UTF8&psc=1&refRID=TV3MFSWJAZ3F6EF1JJKK Quote Link to comment Share on other sites More sharing options...
Simon Posted September 14, 2018 Report Share Posted September 14, 2018 Pico Scope work well and we have sold these in the past. But there are many others out now. Others might pitch in with what they have found good. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 14, 2018 Report Share Posted September 14, 2018 If you want something cheap that will do this one job then a basic single channel one will do fine. I have had a play with one of these before and thought it was decent, Velleman PCSU01, USD$50: https://www.ebay.com/itm/272705051775 Or that one you linked to on Amazon looks ok, I just havent used one. If you want something a bit more useful to keep in your cupboard for future diagnostics, then a 2 channel gives much more opportunity. The Owon VDS1022 is about the best of the cheap ones that I have seen, about USD$80: https://www.ebay.com/itm/302320538379 Quote Link to comment Share on other sites More sharing options...
stroker Posted September 16, 2018 Author Report Share Posted September 16, 2018 On 9/14/2018 at 9:42 AM, Adamw said: If you want something cheap that will do this one job then a basic single channel one will do fine. I have had a play with one of these before and thought it was decent, Velleman PCSU01, USD$50: https://www.ebay.com/itm/272705051775 Or that one you linked to on Amazon looks ok, I just havent used one. If you want something a bit more useful to keep in your cupboard for future diagnostics, then a 2 channel gives much more opportunity. The Owon VDS1022 is about the best of the cheap ones that I have seen, about USD$80: https://www.ebay.com/itm/302320538379 ok i will buy Owon VDS1022 but if there specisfic tool you prefer plz mention it ! Quote Link to comment Share on other sites More sharing options...
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