MS2 Version 3.0 Power Issue

[Porsche650]

I bought this megasquirt unit from a guy that had it on his MR2 and supposedly ran fine. The other day I just tried to see if the leds would light up using my friends setup on his mustang. He has a MS2 version 3.57 wired to a relay board and the car runs. When i tried mine the Led's would blink quickly and then go out and the fuel pump would continually run and the injectors opened and flooded the motor (he was pissed about that) even had turn the engine by hand to see if it would push the fuel out. Also the more times I disconnect and reconnect the power the led's blink and go out quicker and quicker to a point where its just a glimpse. Any idea on where to start in the MS or a reference link? I do not have a simulator at the moment, I bought this thinking it would just work.

[Matt Cramer]

First question - what does it do when you try connecting a laptop to it? You can remove the fuel pump fuse to avoid flooding the engine for this test.

Second question - how is its RPM input and ignition output wired up?

[kjones6039]

MR2 and supposedly ran fine. The other day I just tried to see if the leds would light up using my friends setup on his mustang.

I am not surprised that unplugging from the MR2 and plugging into a totally different car would cause this kind of problem.

Yet another great argument for owning a Stimulator IMO.

Ken

[Porsche650]

First question - what does it do when you try connecting a laptop to it? You can remove the fuel pump fuse to avoid flooding the engine for this test.

Second question - how is its RPM input and ignition output wired up?

In all honesty I did not try to do too much to try and get it to connect? I tried connecting to the same com port that his mustang just recently connected to and it could not connect. I just figured something might be wrong since the flickering light was a bit odd. My friends MS needed to be loaded with all firmware and used MS download to install .abs file but never acted like this.

The wiring was done as per the website install for a Mustang with stock TFI Ignition(http://www.DIYAutoTune.com/tech_article ... ng_5_0.htm). The actual unit will not be going into my friends car nor a mustang it will be for a Fiat and I plan to use Ford edis system.

MR2 and supposedly ran fine. The other day I just tried to see if the leds would light up using my friends setup on his mustang.

I am not surprised that unplugging from the MR2 and plugging into a totally different car would cause this kind of problem.

Yet another great argument for owning a Stimulator IMO.

Ken

I understand the Mr2 would have a different ignition or maybe something else different from the mustangs setup but I wasn't trying to start the car just connect to tunerstudio.
What would be so difference?

[Porsche650]

First question - what does it do when you try connecting a laptop to it? You can remove the fuel pump fuse to avoid flooding the engine for this test.

Second question - how is its RPM input and ignition output wired up?

Honestly i did not try much to make ms connect to tuner. It was previously connected to the mustangs MS2 and Tunerstudio, so i just disconnected that and connected mine and when i did, it could not connect and could not find the com port. Once MS failed to connect and the lights dimmed i decided not to mess with the unit and ask advice.

The mustang is wired as per (http://www.DIYAutoTune.com/tech_article ... ng_5_0.htm) using the stock tfi ignition system.
My friends Mustang starts and runs so there seems to be no reason that i can see why my MS will not connect.

MR2 and supposedly ran fine. The other day I just tried to see if the leds would light up using my friends setup on his mustang.

I am not surprised that unplugging from the MR2 and plugging into a totally different car would cause this kind of problem.

Yet another great argument for owning a Stimulator IMO.

Ken

Even though its a different car and I am sure some electronics or ignitions used would be different from the mr2 to the mustang but what would be the difference? I wasn't trying to start the car just connect it to tuner to make sure it worked.

When my buddy with the mustang installed his megasquirt, he had to install the .abs file and jump the daughter board and install the firmware the leds never blinked and went out or anything nutty like this.

I think after reading this I will try the MS2 on the mustang again and this time remove the fuel pump fuse and see if i reload the .abs

[trakkies]

I agree with Ken about getting a stim - but for simple test purposes why not just buy a DB37 connector and fit a power in and ground lead to it. it will run happily from a PP3 9 volt battery or small wall wart. If running from a car battery or other high current source, fit a 2 amp fuse.

[Matt Cramer]

Try a different communications test. To do this check, you'll need the program portcheck.exe, which comes with most MegaTune versions, including the one on the DIYAutoTune.com website. You'll find it in the MegaTune2.25 folder. If you don't have a copy, download it here:

http://www.DIYAutoTune.com/downloads/tu ... tCheck.zip

Power up the Megasquirt and connect it to your PC. You do not need to open the case and should not put the boot jumper in place for this test. Close MegaTune if it's running, and run the portcheck.exe program. When this program starts, it will scan the available COM ports.

If the port it's scanning is not connected to a working Megasquirt, or it's on the wrong speed, it'll say "No connection made." If it's on the right port and right speed, it will give you the version of the Megasquirt firmware that's on the Megasquirt. Note that some Megasquirt firmware versions will look like earlier versions with this test - for example, 029V identifies it as 029Q. This is for backwards compatibility.

If you get a port where it replies with "S" or something else that doesn't look like a firmware version, this port is probably a fake COM port that echos back everything that's typed.

Please post the results you get from this test, preferably as a screen shot.

[Porsche650]

Sounds good I will try that tomarro when i have access to the car.

[Porsche650]

I didn't want to wait so I tried what trakkies said and hooked my DB37 plug to power off pin 28 with an 1 amp fuse and ground pin 19,18,17,9,8,7. The system blinked the leds like usual but once i tried what matt said using port check it finally found the MS and tuner connected to it. Thanks for your help with that but I am still puzzled with these leds blinking on then off and not staying on. Is this going to be a problem?

Also the firmware is MS2 Rev. 2.300 and my buddies is MS2Extra Serial324 would there be a reason to upgrade? Also update the Monitor.V?.???.abs.S19 file (http://www.megamanual.com/ms2/revisions.htm)

What would be the latest ini file and abs.s19 file if so.

The megasquirt is an older version thats why i ask MS2 Version 3.0 2005 Bowling and Grippo is the board and the processor saids MS2 Version 3.01 2005 Bowling and Grippo.

[kjones6039]

Thanks for your help with that but I am still puzzled with these leds blinking on then off and not staying on. Is this going to be a problem?

Keep in mind, that the led's are not power indicators. They are indicators for various functions. (ie. INJ, WUE, ACCEL etc.) You would not expect to see them functioning until MS receives viable inputs (tach, clt, tps etc.)from the car or a stim. Seeing them light momentarily at boot up is normal.

What would be the latest ini file and abs.s19 file if so.

Assuming you want B&G code.... The latest is 2.920, and can be found here, along with instructions on loading the code:

http://www.megamanual.com/ms2/code.htm

Ken

[Porsche650]

Is there a limitation on the .ini file (the firmware)? Being thats its an older board. Not sure if it works like computers where you have win95,win98,win2000,winxp,win vista,etc and the program trying to install will only work for the old Operating Systems of windows or the new win 7 and 8 or all of them. I wouldn't want to upgrade and end up with problems because i installed a firmware that will not support the older processor.

[kjones6039]

According to the subject line, you have "MS2 Version 3.0"

If this is correct, you can load any B&G or Extra firmware intended for MS2.

I have TS loaded on 3 different machines, including Windows XP Pro, Win 7 and Win 8. All work well!

Hope that helps.

Ken

[trakkies]

I've got TS on an ancient Win98SE laptop - with a serial port - and it works, but crashes when logging. Probably not enough memory.

[Porsche650]

ok sounds good.