MSPNP2 no spark

[Digitalwave]

Have fun tuning!

[slothonaleash]

The ignition issue was solved with a new MS. After taking a bunch of fuel out of the low end of the VE table, I am now up and running :)

Thanks guys!

[varg]

RE: coil getting really hot
The ignition output setting "going high" might be incorrect for your unit, going low would probably fix that issue.

As for it idling rich and misfiring when you rev it, make sure your req fuel value is correct. If it is, scale the VE table until it runs right, assuming the base tune is any good it should run well enough to drive and tune after that. I doubt you can upload logs or msq files to this forum, you'll have to use a third party service like google drive.

[Digitalwave]

It's obviously hard to diagnose something like this over the internet, but if all things are configured properly, then it could just be that it's untuned. If it's idling that rich, it could be a rich misfire (which shows up as lean on the wideband, as it's only reading oxygen). It's time to start tuning, I think. Check your plugs and see if they are fouling.

[slothonaleash]

My VR signal is good according to this:

https://www.diyautotune.com/support/tech/other/megasquirt-vr/

Lots of small bars followed by a bar three times the size of the small bars--all uninterrupted.

My AFR at idle is 11.0.. pig rich right. When I apply throttle, it immediately breaks up and I peg full lean.

I hate to sound uneducated, but how do I go about posting the MSQ file?

Thanks a million for your time by the way; this is why I proudly sport a r3v sticker on my car, for better or for worse...

[Digitalwave]

M20B25 should be a 60-2 (60 minus 2, 2 teeth missing) crank wheel and your tooth #1 angle should be 84* give or take a degree or so. You'll need to lock the timing to test with a timing light (try 0* or 10* of fixed timing, then set your timing gun accordingly). I've never heard of other setups on M20B25's, unless something aftermarket was installed.

How is your VR signal? Are you having any sync loss? You can verify this using the tooth logger. Are you already doing tuning? What is your AFR like? You might want to try posting your full MSQ file here.

[slothonaleash]

I bought an MsPNP2 from diyautotune and my car fired right up...

Next problem!

I'm confused about my trigger wheel. After some research i have found that there are a couple of wheels that fit the M20: one with a missing tooth #1 angle at 84* and one at 324*. I have been having issues with my car having a terrible misfire at low/medium rpm. I tried to verify my base timing with tooth #1 angle at 84* and it looks like I am WAY off. I noticed that my trigger wheel has its missing teeth at what looks like 355* or something stupid. They are literally JUST before the TDC mark on the wheel. What is going on here?

[Digitalwave]

It's possible something is bad in your hardware/wiring, and it's burning up the ignition drivers.

[slothonaleash]

Aaaaaaaand I got it back from repair. Still no spark. Plugged the stock DME back in, got spark. Ready to push this thing into the river. What could be causing this?? The guy said he tested it before sending it out and it worked fine.

[slothonaleash]

Ignition driver failure in the MS. I should have it back from repair soon! I NEED TO DRIVE THIS THING.

[Digitalwave]

Keep us posted. I bet it fires right up when you get it back.

[slothonaleash]

I'd send it back to whomever you bought it from to be repaired or replaced. It can be tested properly with a stim, instead of just arbitrarily replacing parts.

I appreciate your hand holding through this process! :D I sent it back for testing. I will update when I get some results!

[Digitalwave]

I'd send it back to whomever you bought it from to be repaired or replaced. It can be tested properly with a stim, instead of just arbitrarily replacing parts.

[slothonaleash]

Haha yes! Thank you for your troubleshooting expertise! So what do I do? Change the spark transistor? Send the MS out to whodwho?

[Digitalwave]

It sounds like you have a hardware problem.

I would be looking for a hardware issue in the PNP