328e46ess Posted July 23, 2021 Report Share Posted July 23, 2021 Hi I previously wrote about some throttle issues with my supercharged Bmw E46 328 on hte facebook page. I have done some logging and hopes that someone can give me some guidens. While holding even throttle the pedal starts to vibrate and becomes a bit harder too push down, like there is some kind of resistance. And while idleing the car gives throttle by itself with out me even touching the pedal. I have attached three logs and the fault codes Log 2021-07-23 7_02_09 pm.llg Log 2021-07-23 7_05_10 pm run 2.llg Log 2021-07-23 10_19_09 pm run 3.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 23, 2021 Report Share Posted July 23, 2021 Your PID is poorly tuned, the throttle control gets an oscilation in it so TP bounces back and forwards, not settling on target, Throttle shuts down once the TP/Target error accumulator reaches 100. If you attach your tune I can possibly suggest some changes, otherwise it should go back to the tuner. Quote Link to comment Share on other sites More sharing options...
328e46ess Posted July 24, 2021 Author Report Share Posted July 24, 2021 15 hours ago, Adamw said: Your PID is poorly tuned, the throttle control gets an oscilation in it so TP bounces back and forwards, not settling on target, Throttle shuts down once the TP/Target error accumulator reaches 100. If you attach your tune I can possibly suggest some changes, otherwise it should go back to the tuner. See attached tune Olsen e46 328 TS2.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 24, 2021 Report Share Posted July 24, 2021 I would change aux 9 to 500Hz and try the M52 throttle PID settings from the help file as a starting point. Quote Link to comment Share on other sites More sharing options...
328e46ess Posted January 8, 2022 Author Report Share Posted January 8, 2022 I have bought everything I need to convert and install M52 dbw. Had a look at all the connectors and pins an most og the pins are taken. Aux 9 and 10 are taken. Those two need to be used in order to install and get the dbw body working. I do not know what is wired in at those locations. Not many An Volt pins available either. Possible to wire the dbw body to different aux inputs, or move the wires that no goes to aux 9 and 10 to other aux inputs? Added pick plug A Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 8, 2022 Report Share Posted January 8, 2022 So is this a different car to the one this post was originally about? Quote Link to comment Share on other sites More sharing options...
328e46ess Posted January 8, 2022 Author Report Share Posted January 8, 2022 Same car Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 8, 2022 Report Share Posted January 8, 2022 But it already had DBW in your earlier posts. So why do you now say you are converting to DBW? Can you explain better what you are doing? Quote Link to comment Share on other sites More sharing options...
328e46ess Posted January 8, 2022 Author Report Share Posted January 8, 2022 What I posted i 2021 was issues with cabel throttle. I am trying to convert to dbw to get ridd of the issues. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 8, 2022 Report Share Posted January 8, 2022 No, your logs and map above clearly show it is already DBW. The issue with the throttle bouncing around and shutting off is due to poor PID tuning. 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.