sr20 s13 help please - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silhaydy · 02-14-2016, 03:27 PM

So i just traded my car for a sil80 with a blacktop sr20 and it drove fine yesterday which was the first day I got it. Today however, if i accelerate with over 50% throttle it seems, once the rpms get to around 3-3.5k it stops rising and the car will backfire and buck back and forth. Boost gauge is working fine and it does what it was doing when it drove normally but once i reach 3.5k or so rpm boost drops and the air fuel ratio gauge also cuts out and reads --- when that happens. I also have an apexi safc which i havent changed any settings on since I got it yesterday and it was fine then. Im not really sure what to do this is my first 240 and first turbocharged car so i dont have a ton of expeirience with this yet. If you guys can help me figure this out i would greatly appreciate it thanks. Sorry if i have spelling errors or grammar i tried my best....

Nissan87 · 02-19-2016, 04:56 PM

have you checked for boost leaks?

derass · 02-19-2016, 06:43 PM

Try disconnecting the knock sensor.

silverarrow27 · 02-19-2016, 06:56 PM

MAF or AFC settings

silhaydy · 02-19-2016, 10:50 PM

Thanks guys it got it figgured out i think the air flow sensor was unplugged a little bit...

derass · 02-20-2016, 01:42 AM

Does your connector have the metal retainer? It's strange that it would come undone.

silhaydy · 02-20-2016, 06:23 PM

Yea it looks just like that picture. It was loose but i plugged it back in and its been fine since.. Idk how it came undone either?

02-14-2016, 03:27 PM	#1
silhaydy Join Date: Feb 2016 Location: California Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	sr20 s13 help please So i just traded my car for a sil80 with a blacktop sr20 and it drove fine yesterday which was the first day I got it. Today however, if i accelerate with over 50% throttle it seems, once the rpms get to around 3-3.5k it stops rising and the car will backfire and buck back and forth. Boost gauge is working fine and it does what it was doing when it drove normally but once i reach 3.5k or so rpm boost drops and the air fuel ratio gauge also cuts out and reads --- when that happens. I also have an apexi safc which i havent changed any settings on since I got it yesterday and it was fine then. Im not really sure what to do this is my first 240 and first turbocharged car so i dont have a ton of expeirience with this yet. If you guys can help me figure this out i would greatly appreciate it thanks. Sorry if i have spelling errors or grammar i tried my best....

02-19-2016, 06:56 PM	#4
silverarrow27 Zilvia FREAK! Join Date: Oct 2005 Location: Banning, CA Posts: 1,428 Trader Rating: (11) Feedback Score: 11 reviews	MAF or AFC settings __________________ 1989 240sx XE\|2002 Frontier SC CC LB 4wd\|2011 Pathfinder LE V8 4wd

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02-19-2016, 04:56 PM	#2
Nissan87 Zilvia Member Join Date: Dec 2008 Location: SoCal/818 Age: 33 Posts: 222 Trader Rating: (11) Feedback Score: 11 reviews	have you checked for boost leaks?

02-19-2016, 06:43 PM	#3
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 33 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	Try disconnecting the knock sensor.

02-19-2016, 10:50 PM	#5
silhaydy Join Date: Feb 2016 Location: California Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Thanks guys it got it figgured out i think the air flow sensor was unplugged a little bit...

02-20-2016, 01:42 AM	#6
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 33 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	Does your connector have the metal retainer? It's strange that it would come undone.

02-20-2016, 06:23 PM	#7
silhaydy Join Date: Feb 2016 Location: California Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Yea it looks just like that picture. It was loose but i plugged it back in and its been fine since.. Idk how it came undone either?