- Tue Jun 22, 2021 8:13 am
#51262
Hey guys, it's me again... unfortunately .. can't get a break...
Had this problem a while ago when the car felt like it was running on 3 cylinders ..out of 4.. and going really lean... it came out of nowhere and was gone just the same... nothing changed same settings everything... completely forgot about it for a couple of months... and now something similar where it is going slightly lean 1 AFR point almost can't feel it at normal driving except idle where it starts to break up as it does not like over 15:1 Afr.
First time I did not get a chance to troubleshoot because it basically happened one time and went away.. But this time I went straight and swapped the ecu for the old one and everything is fine... swap the speeduino and it runs rougher and a little leaner but not as bad , maybe 0.5 AFR (it's very inconsistent but it's not going away this time) .....
Speeduino is on 0.4.3 board running seq injection and wasted spark
The old megasquirt ecu is running batch injection and wasted spark
Could this still be the injectors acting up even tough it runs fine on the old ecu (but being batch fire it somehow masks the problem)? Or is there something wrong with my mega 2560 board? ( I ordered another mega board for a spare and will test this)
Would posting the tune help any? I have to stress that there was no change made in the tune to cause this... the car ran fine in the morning and than in the evening this happened...
Had this problem a while ago when the car felt like it was running on 3 cylinders ..out of 4.. and going really lean... it came out of nowhere and was gone just the same... nothing changed same settings everything... completely forgot about it for a couple of months... and now something similar where it is going slightly lean 1 AFR point almost can't feel it at normal driving except idle where it starts to break up as it does not like over 15:1 Afr.
First time I did not get a chance to troubleshoot because it basically happened one time and went away.. But this time I went straight and swapped the ecu for the old one and everything is fine... swap the speeduino and it runs rougher and a little leaner but not as bad , maybe 0.5 AFR (it's very inconsistent but it's not going away this time) .....
Speeduino is on 0.4.3 board running seq injection and wasted spark
The old megasquirt ecu is running batch injection and wasted spark
Could this still be the injectors acting up even tough it runs fine on the old ecu (but being batch fire it somehow masks the problem)? Or is there something wrong with my mega 2560 board? ( I ordered another mega board for a spare and will test this)
Would posting the tune help any? I have to stress that there was no change made in the tune to cause this... the car ran fine in the morning and than in the evening this happened...