How does it work????.....

[Jenko]

Hi,

In this case, your screenshots only show you opening the throttle 11% according to the gauge, but you first load bin starts at 20. That's why it didn't jump to the next load bin.

Did you run through the TPS calibration routine (accessed through the 'Tools' Menu)

Also, the TPS support under 3.1 will require you to re-cast your load axis from 0 to 100% TPS. You can probably quickly change them to 10,20,30,40...etc. for testing purposes and then circle back to do some fine-tuning.

I did run through the calibration....however, maybe I did not do it correctly, I went throught the 'set throttle closeed and click ok, then set throttle open and click ok'...did that, however, could you run through what you do after that?....do you need to save the file....an idiots guide would be useful for someone like me ....

Many thanks....Seems we are getting there

Paul.

[brentp]

Once you go through the TPS calibration routine it automatically updates the controller with the new calibration data. I'm suspecting it might be something surrounding the electrical interface with the TPS.

I would recommend measuring the voltage feeding back to the MJLJ on the TPS input line using a volt meter. As you open the throttle you should see the voltage rise steadily. Ideally you would have a low voltage between 0 - 1.5 V when closed, and a high voltage (4-5v) when at wide open throttle. If you can, measure this voltage and report back with your findings.

Regards,

[Jenko]

OK thanks Brent...I will check this and report back...cheers..Paul.

[Jenko]

Once you go through the TPS calibration routine it automatically updates the controller with the new calibration data. I'm suspecting it might be something surrounding the electrical interface with the TPS.

I would recommend measuring the voltage feeding back to the MJLJ on the TPS input line using a volt meter. As you open the throttle you should see the voltage rise steadily. Ideally you would have a low voltage between 0 - 1.5 V when closed, and a high voltage (4-5v) when at wide open throttle. If you can, measure this voltage and report back with your findings.

Regards,

Hi,

Ok checked this today...With MJ powered on (but engine not running), I see 0.4v on a closed throttle, and 3.3v on an open throttle...this is measured from sweep of the TPS, and ground on the car........Is this enough, or should I adjust the TPS, so I get over 4v on open throttle?....Any thing else I should check?....

Thanks.

Paul.

[brentp]

that should be sufficient.

try running through the calibration again, but try using the 3.1.2 version of the configurator, I fixed a problem around tps calibration. Not sure if this is the cause of your problem but it's worth trying. download it in the usual place.

Once you re-calibrate, do this:

save the calibration data to a text file and then paste that contents of that file here in a message.

[Jenko]

that should be sufficient.

try running through the calibration again, but try using the 3.1.2 version of the configurator, I fixed a problem around tps calibration. Not sure if this is the cause of your problem but it's worth trying. download it in the usual place.

Once you re-calibrate, do this:

save the calibration data to a text file and then paste that contents of that file here in a message.

Hi Again,

OK, I've run through the TPS cal again and for the hell of it changed my TPS position so I now get 1v at closed throttle, and 4v at full open...............

Alas, my load bins still stay the same, when I blip the throttle and print screen it shows the tps at below 20 and the revs up at 5000rpm, but this is just because the revs take time to settle and the TPS is an instant reading....I can confirm that the TPS% gauge does show the full sweep of throttle.....

There is a link below to the pic of the TPS cal screen which shows the point at where the bin changes......

http://i34.photobucket.com/albums/d102/ ... PSpic1.jpg

Must admit, I'm stumped.....I can only think this is software related?????.....But I just can't see why it doesnot change when the config software clearly is showing the TPS% gauge is moving, so MJ is certainly seeing the TPS............


A quick thought, I grounded the TPS to the MJ as per instructions, does that also need grounding to the chassis?.....

Thanks...

Paul.

P.S. I'll try the new software, hopefully tomorrow...

[brentp]

(re-edit)

Regarding your TPS grounding question, here's the spiffy new wiring diagram for the V3 MJLJ:
http://www.autosportlabs.net/index.php? ... g_the_MJLJ



I do not think it's a software issue. The software is simply reporting the values coming back from controller representing the runtime data stream. The Load value reported by the TPS gauge is independent of the load 'bin' value shown on the grid- this is by design.

Can you do the following:

1. Please post your ignition configuration file as an attachment to this thread? just save the '.mjlj' file and attach it here.
2. Please also attach your saved TPS calibration file.
3. Perform a short 'datalogging' session, (Under file menu) and attach that file as well.

4. Finally, but still important, can you get a screen shot showing the TPS load gauge registering *higher* than 50- say 55-60%, yet still showing the load bin locked on the first row?


We'll get to the bottom of this.

[brentp]

Paul,

One more things- since you're running TPS, try organizing your bins like the following screen capture, and then try to re-create what you see here.

[Jenko]

(re-edit)

Regarding your TPS grounding question, here's the spiffy new wiring diagram for the V3 MJLJ:
http://www.autosportlabs.net/index.php? ... g_the_MJLJ



I do not think it's a software issue. The software is simply reporting the values coming back from controller representing the runtime data stream. The Load value reported by the TPS gauge is independent of the load 'bin' value shown on the grid- this is by design.

Can you do the following:

1. Please post your ignition configuration file as an attachment to this thread? just save the '.mjlj' file and attach it here.
2. Please also attach your saved TPS calibration file.
3. Perform a short 'datalogging' session, (Under file menu) and attach that file as well.

4. Finally, but still important, can you get a screen shot showing the TPS load gauge registering *higher* than 50- say 55-60%, yet still showing the load bin locked on the first row?


We'll get to the bottom of this.

Hi Brent....

OK, todays update.......

Check TPS wiring - Seems fine....

So back to the files.....

See attched, hope they are of some use.....

Seems there is some movement over the load bins but again, I'm not sure if this is what is expected, I cant take a picture with the load bin simply moved down to the next number with low revs.....


Anyway, there is a load of info here to digest.....I'll attach the datalog, on the next post, as I can only attach 3 files at a time...

Again, thanks for your help

Paul.

[Jenko]

Here is the datalog....It's in excel format, as I can't attach CSV files...

Cheers.

Paul.

[brentp]

Thanks, Paul. I'll look at these.

One quick thing. You changed the load bins to 0,10,20,30... but your attached MJLJ config file shows

mapBins=20,50,60,70,100,135,160,180,200,230

Your screen capture looks like the controller values were out of sync with the controller. with the TPS at 29% and the load bin on the 2nd row it looks like the controller still had your old load bins.

After changing the load bins in the software did you send the updated configuration to the controller? (pressing the "down arrow button" on the tool bar) and then hit "flash" (the icon to the right that looks like a chip). Make sure the values stick in the controller by turning the power off, then on, and then re-fetch the controller configuration.

We should've covered this earlier, but here's how the load bins work- the load bin won't change until the load passes the threshold for that row: if your load bins are

0,10,20,30,40,50,60,70,80,90

and the TPS says 15, it will be on the 2nd load bin. if TPS is 25%, it will be on the 3rd load bin, and so on. the controller uses linear interpolation, so the advance changes smoothly across your specified range.

Please experiment with it some more, and make sure your controller has been updated with the new load bins. You should see the load bins following that pattern described above.


Thanks,
Brent

[Jenko]

Thanks, Paul. I'll look at these.

One quick thing. You changed the load bins to 0,10,20,30... but your attached MJLJ config file shows

mapBins=20,50,60,70,100,135,160,180,200,230

Your screen capture looks like the controller values were out of sync with the controller. with the TPS at 29% and the load bin on the 2nd row it looks like the controller still had your old load bins.

After changing the load bins in the software did you send the updated configuration to the controller? (pressing the "down arrow button" on the tool bar) and then hit "flash" (the icon to the right that looks like a chip). Make sure the values stick in the controller by turning the power off, then on, and then re-fetch the controller configuration.

We should've covered this earlier, but here's how the load bins work- the load bin won't change until the load passes the threshold for that row: if your load bins are

0,10,20,30,40,50,60,70,80,90

and the TPS says 15, it will be on the 2nd load bin. if TPS is 25%, it will be on the 3rd load bin, and so on. the controller uses linear interpolation, so the advance changes smoothly across your specified range.

Please experiment with it some more, and make sure your controller has been updated with the new load bins. You should see the load bins following that pattern described above.


Thanks,
Brent

Hiya,

Apologies for the confusion....I may have taken the config file before I changed the load bins....But, point taken, I will double check this.........

I think it would be interesting to actually drive the car and get a friend to take a screen shot under full load, and see what it shows.........But I will do some more fault finding tomorrow......

Thanks again...

Paul.

[Jenko]

Right then.....I think it's working

I re-loaded the load bins today, And actually took the car for a spin up the road....Guess what...Everything seemed to work. Load bins were changing as expected.......

Car is running rough at the moment but I think this may have nothing to do with MJ...I think I may have an ht lead / carb issue.........So, watch this space

Thanks so far for the fantastic support

Paul...

[brentp]

Glad you have it working, and you're welcome. I only regret we were not able to home in on the solution faster.

[Jenko]

And just to confirm...the reason for the rough running was faulty HT leads....A new set and the problem is cured..........Car now runs very smoothly indeed............Fantastic.....I'll post some maps when I get chance to put the car on the rolling road

Cheers.

Paul.