david henningsson Posted January 6, 2011 Report Share Posted January 6, 2011 Hello. i mounted 6 vag (06b905115r) coils on my bmw m50 turbo. built in igniter. Pin1-12v Pin2- ecu ground. Pin3-ignition drive from ecu. Pin4-ground too engine. doing an ignition test and i hear the coils click but there are no spark at any of the coils when i have spark plugs too check it. WHY? i have rpm and trig 1 and 2 signal. about 180-210 rpm while cranking. Very thankful for quick response. With best regards David Henningsson, Henningssonmotorsport. Quote Link to comment Share on other sites More sharing options...
Rod Smart Posted January 6, 2011 Report Share Posted January 6, 2011 Do you have 'Spark Edge' set correctly? But more importantly, when testing, do you have the threads of the spark plug (while plugged in to the module) touching earth (same GND point as 'Pin-4' from the module) or the engine block? Check that you do have Pin-4 of the module returning to the Engine Block GND point cct of the device (confirms OP's pinouts) http://www.vems.hu/files/COILS_COPS_etc/vw_cop_06b905115e_sch.gif Quote Link to comment Share on other sites More sharing options...
david henningsson Posted January 7, 2011 Author Report Share Posted January 7, 2011 if i have the sparkedge wrong it doesnt click in the coil. ivé tried. ivé tried both without and with the spark plug touching ground. no difference. pin 4 and pin2 is grounded to enginge but in two different places. many other i have talked to only have the pin 4 grounded if the coils metal doesnt touch the sparkplug. and that works. i am going too draw 2 new ground plus 1 new engine ground from chassi just too be sure its not that. Quote Link to comment Share on other sites More sharing options...
david henningsson Posted January 7, 2011 Author Report Share Posted January 7, 2011 problem solved. weak ground on pin2. good spark and the car has started. Quote Link to comment Share on other sites More sharing options...
Jurgen Biggelaar Posted January 13, 2011 Report Share Posted January 13, 2011 Fantastic. Thanks for the update David. Jurgen Quote Link to comment Share on other sites More sharing options...
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