mckabe

I have a 90 Miata with 96 bp. 1.6 coil pack and 1.6 cas. Running Megasquirt pnp2 i fried one igniter when i first started it. Replaced it, drove 28 miles, shut it off for an hour went to restart and fried a second igniter. Also when it was running on all four when i would open the door the idle would kick up and partly surge. I have no tach, and interior lights do not turn on until the ignition is turned forward. All grounds seem good. Can any one help.

FAB

iTrader: (4)

What are your dwell settings? I'm not entirely familiar with MS but does it have variable trigger voltage to potentially drive some of the Toyota coils that require a 12v trigger?

I believe the Miata ignition module is designed to operate off of a 5v signal.

mckabe

Attached are some pictures of my settings.

TheScaryOne

iTrader: (3)

Not a MS guy, but maybe has something to do with this, combined with a wiring problem?
https://www.miataturbo.net/megasquir...circuit-33964/



mod edit.

Braineack

iTrader: (62)

sounds like you have a wiring issues that's causing havok. fix your wiring issue.

Matt Cramer

Spark output with an MSPNP Gen 2 needs to be set to Going High; you have it set to Going Low.

mckabe

So you think that is the problem? is the transistor mod for going inverted needed on the pnp 2

Braineack

iTrader: (62)

yes that's a problem. ( I didn't notice it before).

did you change it for any reason? Or were you randomly loading maps onto your MSPNP2?


stop reading about the transitor mod. you dont need to mod your MS, you need to correctly tune it so you dont break ****.

mckabe

I loaded a base map, no idea how that changed. I'll fix it tomorrow when I get my new igniter. Thanks for the help

Ben

iTrader: (33)

You loaded *what* base map?

Tune settings and project config appear to be from a different ECU.

mckabe

The 90-93 tune on the Megasquirt disk

mckabe

Do all the other settings look okay?

Ben

iTrader: (33)

Negative. We've never released a basemap with those settings. I just verified the current and all previous builds of our software.

You can download the most current basemaps here:
MegaSquirtPNP by DIYAutoTune.com

It also appears that you are using a project for a MS2, not a MSPNP. So it's quite obvious you're not using the setup from the included cd.

mckabe

well , reloaded the base map, adjusted timing, started and drove for a bit. I stopped for gas and when i went to restart it wouldn't start. No spark.

Matt Cramer

Please post a copy of the map pulled off the ECU.

Braineack

iTrader: (62)

did you really reload the "basemap" for someone else's ECU with the improper settings for YOUR ECU and expect it to work after it failed twice before?

mckabe

No, I reloaded the base map from the link posted above. Started from scratch.