jnfurniss Posted July 9, 2023 Report Share Posted July 9, 2023 I have a 350z and I bought a G4x Xtreme. I calibrated the MAP, calibrated the TPS(which at WOT is only 95.6 %) I went in and calibrated the triggers as said on section 6.7 of the owners manual. When I turn the car on after about 3-5 seconds the idle gets very sporadic. Eventually dieing. I can hold RPMs steady and all is fine. Just curious if I missed something along the way when setting everything up. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 9, 2023 Report Share Posted July 9, 2023 Do a short PC log showing the behaviour and attach that and a copy of your tune here. Have you tried adjusting the master fuel? https://youtu.be/_P1LRANeO4A Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 9, 2023 Author Report Share Posted July 9, 2023 11 minutes ago, Adamw said: Do a short PC log showing the behaviour and attach that and a copy of your tune here. Have you tried adjusting the master fuel? https://youtu.be/_P1LRANeO4A I don't really have a tune other than the base tune that is installed on the ECU. I have adjusted the master fuel and i can get it so the car will not die. However, it still jumps from about 900rpm to 1750rpm. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 9, 2023 Report Share Posted July 9, 2023 32 minutes ago, jnfurniss said: I don't really have a tune other than the base tune that is installed on the ECU. That's what I want, the tune file from your ecu and a log. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 9, 2023 Author Report Share Posted July 9, 2023 42 minutes ago, Adamw said: That's what I want, the tune file from your ecu and a log. jack 350z start up tune.pclx Jack's 350z start up log.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 9, 2023 Report Share Posted July 9, 2023 Ok, the problem is the idle control integral is too high, but it also looks like your APS hasn't been calibrated, so you should first do that and a TPS cal. In E-throttle settings, set e-throttle mode to set-up mode. Go to >E-throttle 1>Throttle position sensor and run through the calibration, then go to >accelerator position sensor and do its calibration. Set E-throttle mode back to On when done. Do a store. Go to idle speed control and change the APS lockout to 1.0% and the integral gain to 0.05. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 33 minutes ago, Adamw said: Ok, the problem is the idle control integral is too high, but it also looks like your APS hasn't been calibrated, so you should first do that and a TPS cal. In E-throttle settings, set e-throttle mode to set-up mode. Go to >E-throttle 1>Throttle position sensor and run through the calibration, then go to >accelerator position sensor and do its calibration. Set E-throttle mode back to On when done. Do a store. Go to idle speed control and change the APS lockout to 1.0% and the integral gain to 0.05. With AdamW changes.llgx 38 minutes ago, Adamw said: Ok, the problem is the idle control integral is too high, but it also looks like your APS hasn't been calibrated, so you should first do that and a TPS cal. In E-throttle settings, set e-throttle mode to set-up mode. Go to >E-throttle 1>Throttle position sensor and run through the calibration, then go to >accelerator position sensor and do its calibration. Set E-throttle mode back to On when done. Do a store. Go to idle speed control and change the APS lockout to 1.0% and the integral gain to 0.05. With AdamW changes2.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 You havent calibrated your APS, it is still showing 1.1% at rest, it should be zero. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 24 minutes ago, Adamw said: You havent calibrated your APS, it is still showing 1.1% at rest, it should be zero. before you said to set it to 1% 1 hour ago, Adamw said: Ok, the problem is the idle control integral is too high, but it also looks like your APS hasn't been calibrated, so you should first do that and a TPS cal. In E-throttle settings, set e-throttle mode to set-up mode. Go to >E-throttle 1>Throttle position sensor and run through the calibration, then go to >accelerator position sensor and do its calibration. Set E-throttle mode back to On when done. Do a store. Go to idle speed control and change the APS lockout to 1.0% and the integral gain to 0.05. I my APS/TPS lockout to 1% as mentioned here. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 The idle APS lockout is the value of pedal position that is used to determine if the engine is idling or not. This is a fixed value that you set and should be around 1%. It has nothing to do with calibrating the sensor. You need to calibrate the actual pedal position sensor as I suggested above. The APS should read 0% when your foot is off the pedal and 100% when you press the pedal to the floor. Yours is currently reading 1.1% when your foot is off so idle is never going to work. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 4 minutes ago, Adamw said: The idle APS lockout is the value of pedal position that is used to determine if the engine is idling or not. This is a fixed value that you set and should be around 1%. It has nothing to do with calibrating the sensor. You need to calibrate the actual pedal position sensor as I suggested above. The APS should read 0% when your foot is off the pedal and 100% when you press the pedal to the floor. Yours is currently reading 1.1% when your foot is off so idle is never going to work. Just did everything mentioned above. Here is a new file update. With AdamW changes2.llgx 2 minutes ago, jnfurniss said: Just did everything mentioned above. Here is a new file update. With AdamW changes2.llgx 918.53 kB · 0 downloads Jack's 350z start up log.llgx 4 minutes ago, jnfurniss said: Just did everything mentioned above. Here is a new file update. With AdamW changes2.llgx Jack's 350z start up log.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 Your APS is still showing 1.1% in that log. I wonder if there is a maybe ground issue causing the APS voltage to change a little when the engine is running. Can you do another log, but this time start the log recording before you start the engine, then start the engine and continue logging for say a further 20 secs. Attach log and your most recent tune. You can temporarily set your idle control APS/TPS lockout to 2% for now so idle control works, it would just be better to get that smaller for drivability. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 Okay. My laptop just died so it might be tomorrow. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 26 minutes ago, Adamw said: Your APS is still showing 1.1% in that log. I wonder if there is a maybe ground issue causing the APS voltage to change a little when the engine is running. Can you do another log, but this time start the log recording before you start the engine, then start the engine and continue logging for say a further 20 secs. Attach log and your most recent tune. You can temporarily set your idle control APS/TPS lockout to 2% for now so idle control works, it would just be better to get that smaller for drivability. Jack's 350z start up log.llgx 27 minutes ago, Adamw said: Your APS is still showing 1.1% in that log. I wonder if there is a maybe ground issue causing the APS voltage to change a little when the engine is running. Can you do another log, but this time start the log recording before you start the engine, then start the engine and continue logging for say a further 20 secs. Attach log and your most recent tune. You can temporarily set your idle control APS/TPS lockout to 2% for now so idle control works, it would just be better to get that smaller for drivability. 1 minute ago, jnfurniss said: Jack's 350z start up log.llgx 1.53 MB · 0 downloads The log is too large to share. The one I uploaded is the wrong file. Ignore that one. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 You only get a limited attachment allowance, you can share the file using onedrive/google drive/dropbox or similar Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 10 minutes ago, Adamw said: You only get a limited attachment allowance, you can share the file using onedrive/google drive/dropbox or similar Jack's 350z start up log.llgxJack's 350z start up log.llgx With AdamW changes2.llgx Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 https://drive.google.com/file/d/1TOroK6Xc_bDUEsPkD2XPwiI3a2F11QIl/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 Your drive link is restricted, right click on it in drive and go back into the sharing settings and change it to the option that is something like "anyone with link" Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 10, 2023 Author Report Share Posted July 10, 2023 11 hours ago, Adamw said: Your drive link is restricted, right click on it in drive and go back into the sharing settings and change it to the option that is something like "anyone with link" changed it. https://drive.google.com/file/d/1TOroK6Xc_bDUEsPkD2XPwiI3a2F11QIl/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 10, 2023 Report Share Posted July 10, 2023 It appears to be ok in that log. APS is now at zero. It just needs tuning now. Quote Link to comment Share on other sites More sharing options...
jnfurniss Posted July 11, 2023 Author Report Share Posted July 11, 2023 2 hours ago, Adamw said: It appears to be ok in that log. APS is now at zero. It just needs tuning now. By what I have sent, are you able to see why my Lambda is pegged at 1.354. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 11, 2023 Report Share Posted July 11, 2023 The lambda shows 1.303. AN Volt 1 is showing 4.95V, so that is what the gauge is outputting. Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted July 11, 2023 Report Share Posted July 11, 2023 Or Sensor 5v output has been wired into An1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.