MSefi.com read only forum (Jan.15,2018)

Matt,

I re-traced all my grounds and found that I had the fan ground on the same lug as all the sensor grounds. So, I moved the fan ground over to the other side of the engine bay, and so far the problem seems to have been resolved. It isn't warm enough out tonight to get it very hot driving around ...

Thinking that maybe since I'd messed so much with my tune over time that it might be just generally out of whack, I started a fresh tune, using the MSII_base_code as a starting point. I very quickly got the basics set and got it running. I was able to manually turn the fan on (by changing the spare ...

I've done some additional testing and datalogging. Matt Cramer had replied via email - Matt, I've taken some timing out of the low RPM's - attached is my updated MSQ as well.

I've attached 2 datalogs:

1. In the 'first datalog', I have the engine running and then using the spare ports screen, I ...

I have a MS-II with 2.89 code on a 5.0L Mustang V8 in a Mazda B2200 pickup. I hadn't driven it for any amount of distance (more than 30 minutes or so) until recently. The trip consisted of highway driving, and then a bunch of stop and go city traffic. Once the truck was fully warmed up, I'd be ...

Matt,

I removed the O2 and calibrated it using the pushbutton method, then, for good measure, plugged it into the laptop and recalibrated it using the LM Programmer. The AFR ratio was set to 'custom' for some reason, so I reset it to Gasoline/14.7. I also, of course, put the terminator in the Input ...

Matt,

Thanks. In the Calibrate AFR table, I'd tried several WBO2 models listed (besides the innovate LC-1) to see if I would get the correct readout and all had similar problems - the LC-1 seemed the 'closest'. I'll check the wiring and grounds, and try recalibrating it as well and see where I get ...

Matt,

Thanks. I would certainly agree that TunerStudio is easier to use - I managed to figure out the duty cycle settings almost right away with it and completely missed them in MegaTune. I was concerned that it used a different (incompatible) format of MSQ from megatune, but I was able to open the ...

Matt, don't worry about it, I found the PWM Idle Duty Cycle settings, after testing TunerStudio and finding it in there (easily). I now have working PWM IAC. Of all the documentation I've read (megamanual numerous times), I don't seem to recall anywhere any mention of going to the PWM Idly Duty ...

Matt, Thanks. Where do I change the duty cycle settings for the IAC - is it in the Idle Control dialog in Megatune, or elsewhere? Sorry for the newbie sounding question.

Matt,

Here's my MSQ. Do you think it would hurt to try the wiring to the IAC the other way around?

I have a Ford 5.0L V8 (in a Mazda B2200 pickup) with a MS-II 3.0 w/relay board using Megatune 2.25 and no MSExtra. I can't seem to get the Ford PWM IAC to work. I've tried 2 different IAC's and I just don't seem to get a response. I have the fidle relay jumpered on the relay board. if I unplug the ...

I seem to have it sorted out. I only had IAC7 enabled, but it appeared to be just reversing the polarity for the 0 and 1 trigger (like Matt explained would happen if both were enabled). And, realizing that it was necessary to reboot the MS-II (by turning the ignition key off and back on) after any ...

Matt, thanks, I didn't know that. I had tried testing the voltage with just one spare port enabled, then just the other one, then both, and was getting 12V in all situations. Again, hopefully this weekend I'l test with my board (the spare port problem was with my son's MS-II) now the BIP373 has been ...

Matt, do you mean in the spare ports configuration settings in Megatune? If so, I've tested voltage with IAC2 enabled and disabled. And, I tried enabling/disabling IAC1 as well - I tried to test all different configurations I could - I tried with the power-on setting to 1 and to 0 for both ports etc ...

No, I'm running it to a 40A automotive relay, since the fan draws almost 20A, and the spare port outputs on the MS, I think, are only rated for .5A.

Any other things that I can check/verify? It would seem logical that it's the wiring on the MS-II board, since my previous board worked (with this ...

I'm having an issue with getting my spare ports to control my fan. Basically, I'm always getting 12V across S1-S2 (DB37 pin25, 27), and S3-S4 (DB37 pin 29, 31) on the relay board. I have the Power-on value set to 0 and the trigger value set to 1. The first variable is Coolant > 195 hysterisys 5 - no ...