MS2 AFR TARGET FAIL

daniel_insemsa · Post by **daniel_insemsa** » Wed Apr 12, 2017 3:51 pm

HI, i have fail in the afr target, always is un 14.0. and tune analyze live therefore it does not work well.

thanks

kjones6039 · Post by **kjones6039** » Wed Apr 12, 2017 5:06 pm

When I try to load your MSQ it appears to be empty.

As far as your log goes, jacking the throttle 6-7 times in about 3 seconds makes it a bit difficult to visualize whats going on.

Ken

hybrid · Post by **hybrid** » Wed Apr 12, 2017 10:06 pm

Have you calibrated AFR table?

daniel_insemsa · Post by **daniel_insemsa** » Wed Apr 12, 2017 10:11 pm

yes, but in the AFR TABLE 1 , i have target of 12.8 a WOT and 14.7 to idle, but el AFR1 TARGET in tune analyze live is always is 14.0, not change.

rickb794 · Post by **rickb794** » Thu Apr 13, 2017 7:18 am

You have "don't include AFR target" set?

General settings tab.

kjones6039 · Post by **kjones6039** » Thu Apr 13, 2017 7:35 am

rickb794 wrote:You have "don't include AFR target" set?

That'll do it!

Ken

daniel_insemsa · Post by **daniel_insemsa** » Fri Apr 14, 2017 7:50 pm

yes, i change to "incluide AFRtarget". but the problem remains the same.

MS/Extra 3.4.2.

rickb794 · Post by **rickb794** » Sat Apr 15, 2017 1:15 pm

After a burn and a power cycle?

Sent from my SM-G900V using Tapatalk

seijirou · Post by **seijirou** » Wed Apr 19, 2017 7:22 pm

incorporate AFR target does not change what the AFR target is, it changes the fuel calculation such that changing the AFR target table will cause an immediate change in fuel for the corresponding cells rather than "simply" a change in the AFR target for that vector.

Can you screen shot this please? Turn megasquirt on with TS connected, go to fuel settings then click fuel calculations summary and screenshot that please. Also do you have a stimulator?

slow_hemi6 · Post by **slow_hemi6** » Wed Apr 19, 2017 7:58 pm

Your msq is showing EGO control as Disabled.

daniel_insemsa · Post by **daniel_insemsa** » Sat May 06, 2017 9:07 pm

this is the problem, with afr target when the engine is run.

seijirou · Post by **seijirou** » Sat May 06, 2017 9:34 pm

I'm surprised but I think it's because EGO control is disabled. The 14.0 value is hard-coded in the MSQ, however it's hard-coded in mine too and my AFR Target works but I always have EGO control turned on. If I don't want EGO control to do anything I set step size to 0.

Make the changes yourself or you can try MSQ attached.

rickb794 · Post by **rickb794** » Sun May 07, 2017 9:03 am

In the MSQ posted previously the EGO is disabled.

The MS has no idea what the exhaust looks like how can it make corrections?

Do you have a wideband installed?

Have you calibrated the sensor? Under the "tools" drop down menu, "Calibrate AFR Table"?

Please use screen captures rather than cell phone pics, to make things readable.

daniel_insemsa · Post by **daniel_insemsa** » Mon May 08, 2017 7:58 am

seijirou wrote:I'm surprised but I think it's because EGO control is disabled. The 14.0 value is hard-coded in the MSQ, however it's hard-coded in mine too and my AFR Target works but I always have EGO control turned on. If I don't want EGO control to do anything I set step size to 0.

Make the changes yourself or you can try MSQ attached.

thanks, work well.

Megasquirt Support Forum (MSEXTRA)

MS2 AFR TARGET FAIL

MS2 AFR TARGET FAIL

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