Need help: Idle controller keeps ICV open after transmission load

oleksiyko

Weird... May be somerhing wrong with ICV? Try to clean it.

JHM

ICV position 60 is actually almost fully open. Normally RPM should jump up to 3000.

drippytess

Maybe there is a misunderstanding here. I wanted to say the I just had to play around with the minimum position on 60°(degrees celsius). Also, there is no problem with the idle now, and with the ICV.

My question would point to these three questions:

So I just have to recalibrate the TPS and the CLT, right? (to remove the KJet ECU completely)
What if I do not enable the lambda adaptation? Will it hurt at all?
I tried to adjust the ful correction on idle, because my car is running rich on idle. The problem is, that the more I lean out the mixture at idle, the leaner it will be under load as well. So it will be good on idle, but lean under load with the same amout.

-Or what if I don't touch the corrections (I use the calibration from the firmware I did not modify it) and enable the adaptation?

Thanks!

JHM

Both corrections are interdependent. You should always adjust them both at the time, starting with the correction at load.

oleksiyko

TPS, CLT, ICV that controls by Invent and you can detach KJet ECU.
What corrections do you have now?

drippytess

oleksiyko
Thank you!
I have no correction atm. On idle the lambda is about -8, -10, under load it is -2, 2.

oleksiyko

Em... I meant something rlse... What do you have here:

drippytess

oleksiyko
Currently 0, I did not set anything up. But when the car is idling the lambda correction is around -8. Under load it is around 0.

oleksiyko

Make corrections described here:
https://invent-labs.com/jetronic/docs/en/setup/firststart.html#preparing-for-adjustment
Then switch-on lambda adaptation. That's all.

drippytess

oleksiyko
Okay, thanks! My question would be: What happens if I don’t make any corrections at all. What if I just enable the lambda control without any correction?

oleksiyko

The mixture will be rich or lean all the time.

drippytess

oleksiyko
I think it is not true because I have the lambda control enabled, so based on the lambda sensor the mixture will be adjusted. Just the labda adaptation feature is not enabled. Am I right?

JHM

drippytess
You can skip some or even all of the steps from the manual. However, you won't achieve the best possible EFI operation. That's it.

oleksiyko

drippytess Lambda is good for mixture only in static load (same RPM and engine load), in dynamic load (variable RPM and engine load) lambda is very slow for good mixture.

drippytess

Thanks for the explanation!
I'm planning to do the Ingnition Control, because I had not time to deal with it yet. I'm afraid to do it only because of the hall sensor installation. I can not lift up my car. Will I be able to do it from the engine bay? Also, it it not clear for me yet, how you connected the rpm signal to the instrument cluster and to the Invent ECu at the same time. Did you use any type of diode or something? Or how did you managed to do it?
Thanks!

oleksiyko

Yes, you can change hall sensor from engine bay.
In this topic https://invent-labs.com/forum/d/31-invent-jetronic-ignition-control-for-mercedes/89 mesage no.88 I described how to do distributor like in Audi.
RPM signal for tacho, fuel pump relay and ignition coil I took from "emul" wire.

drippytess

oleksiyko
Sorry, but I don't really understand this. Why do I need to do that? I don't want to do phased injection. I just want to use Invent to control the Ignition. I just have to replace the crankshaft sensor with a hall type, rifht? That was my question as well above.
Thanks for helping me!

oleksiyko

drippytess Of course you must not to do so. I just offered couple desisions for you. What to choose depend with you. So, if you want crankshaft sensor, then make ignition with it, connect ignition coil, tacho and fuel pump relay to "emul" wire. That's all.😁

drippytess

Okay, thanks for the useful infos!
Does the EZL module control the fuel pump relay? Which cable did you connect to the EMUL wire from the fuel pump relay? Also, where can I find the tacho's cable? Is it possible to change the crackshaft sensor without lifting the car up, or taking the whole throttle body off of the engine?
Did you just connected all the cabled directly to the EMUL and that was all?
Thanks again!

oleksiyko

Old name of this wires is "TD".
Just connect "Emul" wire and control wire of ignition coil to this terrminal. About crankshaft sensor: I detached it when intake pipe was detached, so can not to say how it will with.

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