Hello,
Yesterday i finally got my car running with my MS2. (The project was "sleeping" for a while).
Everything works fine except for the AFR that does not seem to update.
I'm using the folowing:
- V3.0 board
- MS2 running 2.891 firmware
- Innovate LC1 wideband lambda sonde
After some searching i unmounted the MS2 from the car and tested it again with the stimulator.
When testing it some furder it seems that the initial reading i'm getting is correct but it is never updated.
So when i start the MS the reading is correct but when i turn the o2 pot the value does not change untill i restart the MS2, then the correct value is shown.
It seems that the correct voltage is reaching the MS2 daughterboard but somewhere down the line something goes wrong.
Does anybody have any experience with this issue?
O2/AFR not updating correctly
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If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
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The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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TuXRuleZ.be
- MegaSquirt Newbie
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Matt Cramer
- Super Squirter
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Re: O2/AFR not updating correctly
It sounds like there's something wrong with the sampling or lag settings. Could you post a copy of your MSQ file?
Also, AFR does not update at zero RPM. The sampling is keyed to RPM.
Also, AFR does not update at zero RPM. The sampling is keyed to RPM.
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TuXRuleZ.be
- MegaSquirt Newbie
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- Joined: Thu Jan 29, 2009 8:53 am
Re: O2/AFR not updating correctly
Thanks for the reply,
I did not know the sampling was triggered by the tach signals and as i'm using the negative coil trigger mechanism i had to reinstall the jumper over the zener diode first to make it work with the stim again.
Now it is updating correctly using the stim so i know there is probably not much wrong with my board or daughterboard.
There is however still the fact that the afr does not update correctly when installed in the car.
As you can see in the attached log file it sporadicly jumps around and seems almost act like a narrowband sensor (however i'm sure the LC1 is configured correctly and the correct output is wired to the ecu). When measuring the voltage on the relaybord you can see this move smoothly up and down unlike the data in the log.
I will be checking the relayboard and cable to the ecu tomorrow (as it is close to midnight here) to see where it goes wrong.
Anyway i have also attached my MSQ file should there still be something wrong.
I did not know the sampling was triggered by the tach signals and as i'm using the negative coil trigger mechanism i had to reinstall the jumper over the zener diode first to make it work with the stim again.
Now it is updating correctly using the stim so i know there is probably not much wrong with my board or daughterboard.
There is however still the fact that the afr does not update correctly when installed in the car.
As you can see in the attached log file it sporadicly jumps around and seems almost act like a narrowband sensor (however i'm sure the LC1 is configured correctly and the correct output is wired to the ecu). When measuring the voltage on the relaybord you can see this move smoothly up and down unlike the data in the log.
I will be checking the relayboard and cable to the ecu tomorrow (as it is close to midnight here) to see where it goes wrong.
Anyway i have also attached my MSQ file should there still be something wrong.
You do not have the required permissions to view the files attached to this post.
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TuXRuleZ.be
- MegaSquirt Newbie
- Posts: 3
- Joined: Thu Jan 29, 2009 8:53 am
Re: O2/AFR not updating correctly
I don't know what went wrong however i tested the relayboard and everything seemed fine.
When i connected the ms again and fired up the car i was getting correct readings.
There probably was a bad connection or something.
Thanks anyway.
When i connected the ms again and fired up the car i was getting correct readings.
There probably was a bad connection or something.
Thanks anyway.