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ZOHAN
09-01-2014, 11:14 PM
Helped a friend with a motor swap, bought it with a blown motor. We've got it cranking and assuming fuel, but not getting spark. Pulled off the icm plug, got 12v from the left (red) wire, white is next (should pulse when cranked over correct? But its not) Then black (ground) and cant remember the forth. Any ideas of troubleshooting or a good write up?

Sahara54
09-02-2014, 12:21 AM
White wire should pulse 1-4 VAC when cranking, If i remember right that's the signal wire from the opti. There should be 2 12v wires for the Coil, ground and white signal.

Opti Test is alil more than halfway down
http://shbox.com/1/4th_gen_tech2.html

ZOHAN
09-02-2014, 01:30 AM
Ok, im on course. Id think its not the opti because its brand new. But prob worth a test

Sahara54
09-02-2014, 02:26 AM
Did you use a new opti harness too?

ZOHAN
09-02-2014, 10:34 AM
Yup. Brand new, came with the opti.