Sr wont run with MAF plugged in. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

GumbyS13 · 04-19-2016, 06:53 PM

So i recently did swapped a S13 red top into my s13, everything works properly but it wont run with the Maf plugged in. It wont even start. When unplugged it itll start fine and run great (obviously in limp mode) but the minute the connector touches the plug the car dies. Now i have 2 known working maf sensors (ones from a single cam ka, and ones a z32) and i have a brand new Wiring Specialties pro harness, and have tried 3 different ecus. ...same problem. I have triple checked for Boost/vacuum leaks and have found nothing. I can even put my hand over the intake while the car is running and itll choke out the car and itll die. Im at a complete loss here and cannot for the life of me figure this out. Any help or input would be GREATLY appreciated.

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Lil_D · 04-19-2016, 07:00 PM

your maf might not be getting power check the wiring at the ecu and trace it to the maf plug

GumbyS13 · 04-19-2016, 07:13 PM

Ill double check, but last time i checked all the wiring checked out at the plug.

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GumbyS13 · 04-20-2016, 04:55 PM

So i got 12v to the power wire, however my signal wire is getting .002 volts any reason why?

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keaning · 04-20-2016, 07:22 PM

The 4 pin connector goes like this
A. No pin
B. 12v
C. Negative
D. Signal
If you have power and ground, then pull the sensor out and clean it, otherwise try a different maf because z32 is completely different and probably won't run good at all

89'sil40coupe · 12-15-2016, 05:45 PM

any updates man? just got my redtop in my s13 and it starts and runs fine with the maf unplugged but as soon as i plug it in it starts idling really weird and eventually dies. car has a brand new wiring specialties pro harness. any help would be appreciated

keaning · 12-15-2016, 05:48 PM

I'd try cleaning the maf and if that doesn't help try a different one, it might be bad

04-19-2016, 06:53 PM	#1
GumbyS13 Leaky Injector Join Date: Apr 2012 Location: Ct Posts: 58 Trader Rating: (0) Feedback Score: 0 reviews	Sr wont run with MAF plugged in. So i recently did swapped a S13 red top into my s13, everything works properly but it wont run with the Maf plugged in. It wont even start. When unplugged it itll start fine and run great (obviously in limp mode) but the minute the connector touches the plug the car dies. Now i have 2 known working maf sensors (ones from a single cam ka, and ones a z32) and i have a brand new Wiring Specialties pro harness, and have tried 3 different ecus. ...same problem. I have triple checked for Boost/vacuum leaks and have found nothing. I can even put my hand over the intake while the car is running and itll choke out the car and itll die. Im at a complete loss here and cannot for the life of me figure this out. Any help or input would be GREATLY appreciated. Sent from my SM-N920P using Tapatalk

04-19-2016, 07:00 PM	#2
Lil_D Zilvia Addict Join Date: Nov 2010 Location: The Bay Area Age: 28 Posts: 733 Trader Rating: (5) Feedback Score: 5 reviews	your maf might not be getting power check the wiring at the ecu and trace it to the maf plug __________________ @lild415

12-15-2016, 05:45 PM	#6
89'sil40coupe Leaky Injector Join Date: Dec 2009 Location: athens, tn Age: 31 Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	any updates man? just got my redtop in my s13 and it starts and runs fine with the maf unplugged but as soon as i plug it in it starts idling really weird and eventually dies. car has a brand new wiring specialties pro harness. any help would be appreciated __________________ 93' sr sil-40

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04-19-2016, 07:13 PM	#3
GumbyS13 Leaky Injector Join Date: Apr 2012 Location: Ct Posts: 58 Trader Rating: (0) Feedback Score: 0 reviews	Ill double check, but last time i checked all the wiring checked out at the plug. Sent from my SM-N920P using Tapatalk

04-20-2016, 04:55 PM	#4
GumbyS13 Leaky Injector Join Date: Apr 2012 Location: Ct Posts: 58 Trader Rating: (0) Feedback Score: 0 reviews	So i got 12v to the power wire, however my signal wire is getting .002 volts any reason why? Sent from my SM-N920P using Tapatalk

04-20-2016, 07:22 PM	#5
keaning Join Date: Aug 2011 Location: washington Age: 27 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	The 4 pin connector goes like this A. No pin B. 12v C. Negative D. Signal If you have power and ground, then pull the sensor out and clean it, otherwise try a different maf because z32 is completely different and probably won't run good at all

12-15-2016, 05:48 PM	#7
keaning Join Date: Aug 2011 Location: washington Age: 27 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	I'd try cleaning the maf and if that doesn't help try a different one, it might be bad