rb no spark please help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

401imports · 03-27-2012, 11:27 AM

ok so i have a rb25 s2 motor in my s13. the motor was pulled from a rx7 and was sold to me. motor ran and started fine in the fd but when i put it in my car im getting no spark. i have a plug n play harness i got from ws and using the same ecu as the kid was using in the rx7. now im getting power and ground from my coils but no pulse. could it be a ground issue? remember the motor started and ran fine in the rx7 so im sure the sensors and ecu is fine. but im not sure wht could be the problem. any ideas or thoughts would help. i need to get this car running asap. please help thanks.

401imports · 03-27-2012, 11:30 AM

also want to throw this out there... the ecu has no mounting bracket but where the mounting bracket should be, looks to be some kid of leads. like if i open the ecu the leads go into the ecu and kinda look like a ground but not sure. so idk if i need to ground the ecu itself by bolting it down... i just dont have the bracket but if needed ill rig somthing

ch1873857 · 03-27-2012, 11:41 AM

wiring or ground. has to be. theres no ignitor on s2 motors so.... ive known quite a few faulty wsp harnesses but not the plug and play premade ones..

401imports · 03-27-2012, 11:47 AM

yea its the pre made one. i didnt send my old one in so... ground u think?

03-27-2012, 11:27 AM	#1
401imports Zilvia Member Join Date: May 2010 Location: rhode island Age: 31 Posts: 173 Trader Rating: (2) Feedback Score: 2 reviews	rb no spark please help ok so i have a rb25 s2 motor in my s13. the motor was pulled from a rx7 and was sold to me. motor ran and started fine in the fd but when i put it in my car im getting no spark. i have a plug n play harness i got from ws and using the same ecu as the kid was using in the rx7. now im getting power and ground from my coils but no pulse. could it be a ground issue? remember the motor started and ran fine in the rx7 so im sure the sensors and ecu is fine. but im not sure wht could be the problem. any ideas or thoughts would help. i need to get this car running asap. please help thanks.

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03-27-2012, 11:30 AM	#2
401imports Zilvia Member Join Date: May 2010 Location: rhode island Age: 31 Posts: 173 Trader Rating: (2) Feedback Score: 2 reviews	also want to throw this out there... the ecu has no mounting bracket but where the mounting bracket should be, looks to be some kid of leads. like if i open the ecu the leads go into the ecu and kinda look like a ground but not sure. so idk if i need to ground the ecu itself by bolting it down... i just dont have the bracket but if needed ill rig somthing

03-27-2012, 11:41 AM	#3
ch1873857 Nissanaholic! Join Date: Sep 2003 Location: Andrews Air Force Base Posts: 1,905 Trader Rating: (1) Feedback Score: 1 reviews	wiring or ground. has to be. theres no ignitor on s2 motors so.... ive known quite a few faulty wsp harnesses but not the plug and play premade ones..

03-27-2012, 11:47 AM	#4
401imports Zilvia Member Join Date: May 2010 Location: rhode island Age: 31 Posts: 173 Trader Rating: (2) Feedback Score: 2 reviews	yea its the pre made one. i didnt send my old one in so... ground u think?