intermitent miss

[turboram]

I have a ms2 3.57 with an internal coil driver running a msd 7al box and I was wandering if there was any noise issues with the internal driver that would cause a miss? I scoped the crank signal and it never dropped out but the ms rpms go zero for a split second at the miss.any ideas or should I try an external driver? Im running a hall effect crank trigger

[turboram]

also the miss is less severe and less frequent with the alternator unhooked.running code 2.88

[Matt Cramer]

This is probably an input problem instead of an output problem. What sort of sensor are you using for RPM input?

[turboram]

the sensor is a dodge magnum hall affect crank sensor

[Matt Cramer]

Are you using the stock Magnum trigger wheel too?

[turboram]

NO the trigger wheel is a 24-1 homemade as part of the balancer (made it in my buddys mill)

[Matt Cramer]

Let me know what firmware you're running and I will see what diagnostic tools you can use to troubleshoot this.

Also, if you post your MSQ file, I can have a look at your settings.

[The Benz Master]

i had a similar problem who ended up being a cold solder on the crank sensor circuit... you still have the welded in jumper wires with 3.57?