MS3 Idle issue
#1
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Hi! i'ved got my car out 2 days ago w/reverant ms3, i'ved been autotuning fuel, things are going good so far! the car is pulling good!
But a have a few issue
The first one beeing that i can't start it unless i give it a bit of throttle
The second one is that when i get off of load, and put it into neutral(or clutch) the idle goes wayyy down to like 300rpm, and one of 3 time, it dies! the only way i can save it, is too give a bit of throttle before the rpm goes down, if i do this, the rpm goes back to idle no problem.
I was thinking it may be related, idle setting maybe.
Got a closed-loop idle setting screenshot, if that is for any help!
But a have a few issue
The first one beeing that i can't start it unless i give it a bit of throttle
The second one is that when i get off of load, and put it into neutral(or clutch) the idle goes wayyy down to like 300rpm, and one of 3 time, it dies! the only way i can save it, is too give a bit of throttle before the rpm goes down, if i do this, the rpm goes back to idle no problem.
I was thinking it may be related, idle setting maybe.
Got a closed-loop idle setting screenshot, if that is for any help!
#2
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1. sounds like you are injecting too much fuel during cranking
2. use last known value, make sure your fuel maps dont go lean in low load/rpm cells, allow overrun to inject fuel again around ~1800RPM.
3. tune PID
2. use last known value, make sure your fuel maps dont go lean in low load/rpm cells, allow overrun to inject fuel again around ~1800RPM.
3. tune PID
#7
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i had droop due to the fuel not being turned back on fast enough. the was mechanical latency from the rpm point i had set and when the afrs would register again. ramping upthe dashpot didn't help since no fuel was there to stabilize idle speed.
#10
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So i lowered fuel in the starting area in the VE table, plus "tuned" PID according to Megamanual, and switch a few ajustement you guys told me to try, now only waiting.
Now all i need is the temperature to cooperate! was about 55º sunday, now 25º and snowing -_-'. I'll give some update and some logs as soon as possible!
Now all i need is the temperature to cooperate! was about 55º sunday, now 25º and snowing -_-'. I'll give some update and some logs as soon as possible!
#11
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What firmware is the bug on? I think I'm on 1.2.0? But I haven't driven the car since like October, but will probably be actually paying attention to it soon.
But having a dashpot that works would acutally be nice.
#12
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Set the decay to zero and the dashpot stays as you'd expect it to. There's a bug where it actually removes duty rather than adds it, but you don't need/want any decay anyway so just disable it.
It's still present on the latest 1.2 release, no idea if 1.3 beta has fixed it, not tried it yet.
#14
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So i got thing dialed in better!
Quick tuned PID, put more fuel in the very low load under 2900rpm area.
Idle seems to be alot better, no more significant drop, the bieggest drop^i've seen was at about 650-700rpm!
Got some fuel off in the starting zone, seem to have help alot too!(see table below)
I noticed that, the engine wants to stall in idle when i get both windows up at the same time(power windows of course) is there a way to compensate for the draw of power?
Seriously thanks for the tips, seem to have help alot!
Quick tuned PID, put more fuel in the very low load under 2900rpm area.
Idle seems to be alot better, no more significant drop, the bieggest drop^i've seen was at about 650-700rpm!
Got some fuel off in the starting zone, seem to have help alot too!(see table below)
I noticed that, the engine wants to stall in idle when i get both windows up at the same time(power windows of course) is there a way to compensate for the draw of power?
Seriously thanks for the tips, seem to have help alot!