Megasquirt Support Forum (MSEXTRA)

I have an MS3 system with 3.57 main board, MS3 and MS3x boards. I have the engine running but I have a very severe engine miss fire. I two MS3x boards and have used both. I have good steady pulse on 6 cylinders at the DB37 connector on the MS3x board. On the SprkA pin I get no pulse with my Oscillos...

jsmcortina wrote:Yes. This is covered in the manual.

James

James, Thanks. I am still having problems finding this info in the manual.

Bill

Checking my COP wiring with my timing light, it seems that the coil output from MS3x needs to be wired in the following manner. My firing order 1,3,7,2,6,5,4,8 SPKA - Coil #1 SPKB - Second Coil in the firing order, Coil 3 SPKC - Third Coil in the firing order, Coil 7 etc. Is this the case? Second Qu...

jsmcortina wrote:There are a couple of options shown in the MS3 ignition manual.

James

Could I use two of the Bosch 0 227 100 211 units on my 8 cyl.

Is this ignition box available?

Jean, Could you let me know where in the manual to find a good option to run a http://www.diyautotune.com/catalog/ign6-sixtower-coil-pack-p-430.html or similar with a ms3/ms3x setup please? (The various options can sometimes be a little overwhelming when read as a whole!) Thanks Craig Craig, If you...

What do invision as a coil driver setup? I am going to use driver cards I purchased from Glen's Garage. The problem here is that I will have to use another case and that just is not neat.

I have two projects where I will need coil drivers.

Thanks,

Bill

jsmcortina wrote:Did you connect your coils directly to the MS3X card?

If yes then you could easily have damaged the logic driver chip. You might be lucky.

James

I did, Hope I got lucky. I will find out today.

Thanks again,

Bill

I missed that.

Thanks,

Bill

I am trying to setup my MS3, MS3x for sequential fuel and spark. I have pulses at the fuel injectors but no pulse at the coils. I have the 12 volts at the coils but not ground, My test light will not flash. I have attached my msq file and a screen shot of the composite logger. What is the location o...

I am a bit embarrassed to let you know what I found wrong. However, someone may make the same mistake. I had the wires from both the cam sensor and crank sensor reversed. When I changed them I now have RPM. I still do not have pulse at neither plugs nor injectors. I have not check all my possible er...

These really sound like harness problems. Ken I agree with you but my test do not confirm that fact. I also have the DYI MS3x harness. I have check the contunity from where my harness goes through the firewall to the connector pin on the MS3x board. I have been unable to cause the connection to be ...

The composit logger and the trigger have show signal breifly a couple of times. Most of the time they are blank. I suspect that that I have a bad connection somewhere and am not getting both the cam and crank signal to the cpu. I have been unable to find the bad connection. Sometimes when I jiggle t...

Where on the MS3 board can I check both the cam and crank signals?

Thanks,

Bill

I seem to be having problems with my MS3x board. I have checked and double checked my wiring. I am getting a good signal at Pin 1 of U7 on the MS3X card. The RPM in tuner studio is very erratic. Some times I will have starting RPM of 230. The next time I try it will be 0. Then sometimes it will star...

James, I do want to run full sequential on the fuel and coils. I have both the injectors and coils connected to the MS3x board. "In that case you should be setting that the injector outputs are on MS3X - not V3." I am haveing a brain Fa___ and cannot find the injector output settings. Wher...

I changed the injector setting from full sequential to semi sequential.

I still do not get an rpm reading. The RPM will go up to 175 then fall back to zero.

I get no reading in any of the loggers, composit, tooth, or trigger.

What do I do next?

Thanks again for everyone's help.

Bill

I noticed this time that the RPMs would go up to 150 then drop back to 0.

Good signal at Pin 1 of U7 on the MS3X card. No RPM, must still have a configuration problem. Do not have the config error now.

Still do not have anything in the composite logger or trigger logger.

Thanks,

Bill

To answer James' question, I see nothing in the composite logger or trigger logger. I checked the signal at Pins 3 and 4 on jumper J1 and get a very good signal out of the crank VR conditioner. I get a good signal on Pin 32 of the DB37 on the MS3X board, the cam input. I have been unable to determin...

I have turned all four pots fullly counter clockwise but no change. I will try your suggestion.

Thanks,

Bill