low revs when starting
Moderators: jsmcortina, muythaibxr
low revs when starting
Hello, update to 36-2 in crankshaft sensor. now when starting the car. directly at 600rpm. Before, it went up to 1200rpm when cold and reduced the revolutions, with higher temperatures, can someone help me with my tune. what has changed?? Thanks in advance
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- CurrentTune.msq
- (273.92 KiB) Downloaded 8 times
Re: low revs when starting
Post a data log that was taken with the current tune. We need that to see what's going on.
Re: low revs when starting
If the engine temperature rises, the revs increase and the AFR is set to 14.3. sorry for my English
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- start.mlg
- (701.11 KiB) Downloaded 8 times
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- start2.mlg
- (724.72 KiB) Downloaded 7 times
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- 2024-03-26_16.48.52.mlg
- (643.55 KiB) Downloaded 6 times
Re: low revs when starting
Ok, Let's look at the log, your log says your engine "is in cruise state", not in an "idle state". The reason is that your TPS is at 1.2% and under your engine state settings idle is set to less than 1%. The fix is simple, because your "closed loop idle settings" are using the "initial value table" and your "initial value table" is set to all zeros. This means that when you try to start it, it doesn't have any idle air and is getting all of it's air from the TPS which is opened too far.
My suggestion is to make your "closed loop initial value table" look like the manual, close your TPS, recalibrate your TPS and it should work. If you have a RPM flair up on start up lower the values in the "closed loop initial value table".
My suggestion is to make your "closed loop initial value table" look like the manual, close your TPS, recalibrate your TPS and it should work. If you have a RPM flair up on start up lower the values in the "closed loop initial value table".
Re: low revs when starting
Hello, and thanks for the help. TPS gauge And adjust the ilde map, but if I modify I don't notice a difference, now it starts at 1300rpm and goes down to 850rpm, it takes about 8 seconds. I would like 1100rpm when starting
- Attachments
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- start mod.mlg
- (985.53 KiB) Downloaded 5 times
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- CurrentTune.msq
- (286 KiB) Downloaded 4 times
Re: low revs when starting
Under "idle cranking duty/Steps", I would lower all the steps by 20 and see if that is better.
Joe
Joe
Re: low revs when starting
thanks for your help, now it is correct