Toliski Posted October 14, 2017 Report Share Posted October 14, 2017 Hello guys i have a problem. I try to make my fuel map better i make my idle better the car runs good not fine but good. Suddenly as i go for drive yesterday when i push the clutch pedal the engine stop. I try once nothing second nothing the third it start and everything was fine again. Today it make the same thing. I make a log but in the log its only the 'shut down time' not the 'start again time' because i make the key off key on. at the last 20-30 secs the problem occurs i try to start with no throttle half throttle and full throttle but nothing. Then i make key off and the Ecu disconected so the log stops. but after that everything was fine. Can you see any mistakes? Toyota Celica ST205.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 15, 2017 Report Share Posted October 15, 2017 In the area near the end where you are cranking with the half throttle/full throttle, the RPM is showing zero. That could be a trigger arming threshold setting or possibly wiring/hardware. So we can check arming threseholds, can you do a triggerscope while cranking and attach here. Disconnect coil or something so engine doesnt start. Open up the triggerscope screen with ECU online. Have someone crank the engine and while cranking click the "capture" button, keep cranking until the waveform is drawn. Save it as a log file. Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 15, 2017 Author Report Share Posted October 15, 2017 1 hour ago, Adamw said: In the area near the end where you are cranking with the half throttle/full throttle, the RPM is showing zero. That could be a trigger arming threshold setting or possibly wiring/hardware. So we can check arming threseholds, can you do a triggerscope while cranking and attach here. Disconnect coil or something so engine doesnt start. Open up the triggerscope screen with ECU online. Have someone crank the engine and while cranking click the "capture" button, keep cranking until the waveform is drawn. Save it as a log file. I try it later and I send it here. Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 16, 2017 Author Report Share Posted October 16, 2017 On 15/10/2017 at 11:33 AM, Adamw said: In the area near the end where you are cranking with the half throttle/full throttle, the RPM is showing zero. That could be a trigger arming threshold setting or possibly wiring/hardware. So we can check arming threseholds, can you do a triggerscope while cranking and attach here. Disconnect coil or something so engine doesnt start. Open up the triggerscope screen with ECU online. Have someone crank the engine and while cranking click the "capture" button, keep cranking until the waveform is drawn. Save it as a log file. Well i dont know if i make it right so i make 4 logs. 1st capture.llg 2nd capture.llg 3rd capture.llg 4rth capture.llg Quote Link to comment Share on other sites More sharing options...
CamB Posted October 16, 2017 Report Share Posted October 16, 2017 What sort of cranking speed? Perhaps your arming thresholds are a little high at 1000rpm, particularly if its cranking faster when warm than cold (presumably its ok starting cold, and this is only an issue restarting hot). Also not clear if you are looking for advice on why it stalled on clutch in. You might benefit from using the idle ignition table. Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 16, 2017 Author Report Share Posted October 16, 2017 5 minutes ago, CamB said: What sort of cranking speed? Perhaps your arming thresholds are a little high at 1000rpm, particularly if its cranking faster when warm than cold (presumably its ok starting cold, and this is only an issue restarting hot). Also not clear if you are looking for advice on why it stalled on clutch in. You might benefit from using the idle ignition table. I don't understand the reason of trigger scope. I make it because Adamw ask me to do it but i don't understand if i capture it right. The engine is cold at the logs. It's anything wrong with trigger scope? Quote Link to comment Share on other sites More sharing options...
Simon Posted October 16, 2017 Report Share Posted October 16, 2017 Those loges were at cranking speed? Toliski 1 Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 17, 2017 Report Share Posted October 17, 2017 5 hours ago, Toliski said: I don't understand the reason of trigger scope. I make it because Adamw ask me to do it but i don't understand if i capture it right. The engine is cold at the logs. It's anything wrong with trigger scope? Your triggerscopes look like they would work ok with your current settings but I would probably make a small change to the trigger 2 arming threshold table just to give us a little more margin of error. Try it like this: I suggest for the next little while that you carry your laptop around with you, then if it ever doesnt start again you can connect laptop and do a quick triggerscope which may show us what the problem is. Toliski 1 Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 17, 2017 Author Report Share Posted October 17, 2017 7 hours ago, Simon said: Those loges were at cranking speed? Yes they are! 3 hours ago, Adamw said: Your triggerscopes look like they would work ok with your current settings but I would probably make a small change to the trigger 2 arming threshold table just to give us a little more margin of error. Try it like this: I suggest for the next little while that you carry your laptop around with you, then if it ever doesnt start again you can connect laptop and do a quick triggerscope which may show us what the problem is. ok i write the new settings and i wait!!! thanks guys! Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 17, 2017 Author Report Share Posted October 17, 2017 18 hours ago, Adamw said: Your triggerscopes look like they would work ok with your current settings but I would probably make a small change to the trigger 2 arming threshold table just to give us a little more margin of error. Try it like this: I suggest for the next little while that you carry your laptop around with you, then if it ever doesnt start again you can connect laptop and do a quick triggerscope which may show us what the problem is. Well i make this change but i notice when i start my engine from stone cold it works with 3 cylinders for a while. After a 30 secs it works fine again. The change that we made has to do with that? Or its an other thing? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 18, 2017 Report Share Posted October 18, 2017 3 hours ago, Toliski said: The change that we made has to do with that? Or its an other thing? Possibly. You can always change the thresholds back to what they were originally then if it improves you know that is the problem. Quote Link to comment Share on other sites More sharing options...
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