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supershanesta

MS2 L28ET Stopped sparking

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I was just pulling my 240z out of the driveway and it died. I originally thought I might be low on gas but it turns out I am not getting spark. I connected my computer and it senses rpm. I can test the injectors and even hear the clicking in the cabin when doing a spark test but it's not creating a spark on the distributor. 
 
Do you have steps I could follow with a multimeter to figure out the exact issue?
 
MS2 3.0 L28et. Single coil to stock distributor setup.
 
Thanks,
 
Shane

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Start from the beginning.

 

You hear it sparking,  but not creating spark on the distributor?  The distributor is the first place the spark will jump. Check your distributor cap/rotor.

 

You pulled the plugs, grounded them and tested for visual spark at the plugs themselves?

 

megasquirt is really great for troubleshooting with its test functions.

 

 

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NO hes hearing the injectors click not dizzy.

Could be a bunch of reasons Here are some I would check in this order.

 

Could be no power to the coil simple check with a light. IF YES check this.... Relay, Fuse, Physical connection. IF NO PROCEED to next

 

Coil Wire to dizzy nice and snug. if yes continue

 

COIL is bad How to check- Check FSM there are resistance test. IF good proceed.


bad connection between COIL (NEG) to transistor source external / internal pin36 Ohm out.

 

Bad transistor external / internal ( I doubt it )

 

If I had to guess its the BIP transistor touching the heat sink/too much thermal paste. Assembly guide as for using metal screw i use the nylon there. IF it is this you still learned something like trouble shooting flow chart.

 

Goodluck

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