randy 77zt Posted November 15, 2009 Share Posted November 15, 2009 car has been in the garage for 3 years while i have been fiddling with engines and changing parts to make it run correctly.after blaming an engine loss on my homemade ignition system(hall effect sensor on the flywheel-81 zxt dizzy) i decided to goto chevy lsx coils.got that working but had 3 injectors inop.but i changed to a new harness between the ecm and the relay board it it seemed to run ok except on boost.so i wired some light bulbs up to the injector curcuits -hung them on the rear view mirror and went for a drive.when thwe car went into its bucking thing i noticed 1 of the lights going in and out.so i decided to open up the ms ecm(was opened up before for the lsx coil driver resistors) and took a good look and the solder joints on the injector driver transistors.found 1 that was never soldered-just stuck into the board and bolted to the case end.funny-i used to daily drive this car 50 miles a day.after the repair-i test drove and the lights stayed on -but now i have to get some tuning done.hopefully i will get some horsepower and not lose my good new stroker motor-l28et with vg30dett pistons and diesel crank. Quote Link to comment Share on other sites More sharing options...
trippintl0 Posted November 18, 2009 Share Posted November 18, 2009 Good job on the troubleshooting! So, where'd you get the MS from? Quote Link to comment Share on other sites More sharing options...
Len Posted November 19, 2009 Share Posted November 19, 2009 Cool Randy!...hopefully you can get it back on the racetrack again.. Quote Link to comment Share on other sites More sharing options...
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