RB20 Swapped S13 problem. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Randomhero40 · 09-08-2014, 12:18 AM

Hey ya'll. New to the forums. So if this is posted in the wrong spot, I apologize. Please move it to the correct location if need be.

Anyways, I'm having a problem with my car, and I'm looking to see if someone can help me figure it out. I've got a 93 240 hatch with an RB20DET swap. The swap was done by the previous owner, not by me. The car is my daily, and I've had it around 3 months, without any problems until now.

About a week ago, I was driving, and the car gave a sputter. I stopped at a stoplight a little after, and the car died on me. However, it started right back up. Its done this a few more times over the course over the last week. The "Sputter" seems to be getting worse though. When it does it, I get no throttle response. I can mash on the gas, but the car just loses speed. At first it would sputter and catch allowing me to keep driving, but now when it does it I have to pull over and let the car die. And at first the car would start right back up, but now it takes a minute before it'll start again. The car also has an idling problem, where the idle likes to fluctuate up and sometimes down while in neutral. Not sure if that could be related or a separate problem.

Anyone have input on whats causing this? I've replaced the fuel pump with a 255 and it didn't solve it. Have spark plugs ordered and when they get here I'll put them in. If that doesn't work my next things to replace are the MAF and TPS.

XMcEvilson · 09-08-2014, 01:16 AM

is it all stock? I would guess coil packs

Randomhero40 · 09-08-2014, 01:47 AM

Yeah. All stock except for the air intake.

TwoForDeh · 09-10-2014, 04:58 PM

Sounds like it could be coil packs or a boost leak or even a fuel issue

lamgee · 09-10-2014, 05:24 PM

sounds like ignition problem. most likely coilpacks died. easy to troubleshoot. unplug one each time and start the car - you will see which one works or doesnt. if you have consult cable - read the code. should show 21 if ignition. also ignition module can die if all coilpacks dont act consistent. spark plugs just unscrew and read. rb motors like ls coils swap. read on gtrcanada how its done - never worry about sputter or hesitation again. oh and get rid of 255. rb dont like walbro. good luck

edit: my phone bad

Yellow4g63 · 09-11-2014, 12:21 PM

Could be fuel pump too.

90GTpony · 09-11-2014, 02:10 PM

More than likely a coil pack issue. They very commonly go out because of the heat and age. Could also be a Vacuum/Boost leak.

OBEEWON · 09-11-2014, 02:22 PM

My money is on a fuel pump.
Where do you buy your gas?
High ethanol kills fuel pumps.

09-08-2014, 12:18 AM	#1
Randomhero40 Join Date: Sep 2014 Location: GA Age: 30 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	RB20 Swapped S13 problem. Hey ya'll. New to the forums. So if this is posted in the wrong spot, I apologize. Please move it to the correct location if need be. Anyways, I'm having a problem with my car, and I'm looking to see if someone can help me figure it out. I've got a 93 240 hatch with an RB20DET swap. The swap was done by the previous owner, not by me. The car is my daily, and I've had it around 3 months, without any problems until now. About a week ago, I was driving, and the car gave a sputter. I stopped at a stoplight a little after, and the car died on me. However, it started right back up. Its done this a few more times over the course over the last week. The "Sputter" seems to be getting worse though. When it does it, I get no throttle response. I can mash on the gas, but the car just loses speed. At first it would sputter and catch allowing me to keep driving, but now when it does it I have to pull over and let the car die. And at first the car would start right back up, but now it takes a minute before it'll start again. The car also has an idling problem, where the idle likes to fluctuate up and sometimes down while in neutral. Not sure if that could be related or a separate problem. Anyone have input on whats causing this? I've replaced the fuel pump with a 255 and it didn't solve it. Have spark plugs ordered and when they get here I'll put them in. If that doesn't work my next things to replace are the MAF and TPS.

09-11-2014, 12:21 PM	#6
Yellow4g63 Zilvia FREAK! Join Date: Jan 2003 Location: Socal Posts: 1,454 Trader Rating: (5) Feedback Score: 5 reviews	Could be fuel pump too. __________________ 95 240sx RB20 415whp 91 Nx2000 VVL yo

09-11-2014, 02:22 PM	#8
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	My money is on a fuel pump. Where do you buy your gas? High ethanol kills fuel pumps. __________________

09-08-2014, 01:16 AM	#2
XMcEvilson Zilvia Member Join Date: Jun 2008 Location: Houston, Texas Age: 37 Posts: 207 Trader Rating: (0) Feedback Score: 0 reviews	is it all stock? I would guess coil packs

09-08-2014, 01:47 AM	#3
Randomhero40 Join Date: Sep 2014 Location: GA Age: 30 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Yeah. All stock except for the air intake.

09-10-2014, 04:58 PM	#4
TwoForDeh Zilvia Junkie Join Date: Feb 2013 Location: NH Posts: 426 Trader Rating: (0) Feedback Score: 0 reviews	Sounds like it could be coil packs or a boost leak or even a fuel issue

09-10-2014, 05:24 PM	#5
lamgee Join Date: Aug 2014 Location: Planet Earth Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	sounds like ignition problem. most likely coilpacks died. easy to troubleshoot. unplug one each time and start the car - you will see which one works or doesnt. if you have consult cable - read the code. should show 21 if ignition. also ignition module can die if all coilpacks dont act consistent. spark plugs just unscrew and read. rb motors like ls coils swap. read on gtrcanada how its done - never worry about sputter or hesitation again. oh and get rid of 255. rb dont like walbro. good luck edit: my phone bad

09-11-2014, 02:10 PM	#7
90GTpony Join Date: Mar 2010 Location: cary, nc Age: 36 Posts: 38 Trader Rating: (2) Feedback Score: 2 reviews	More than likely a coil pack issue. They very commonly go out because of the heat and age. Could also be a Vacuum/Boost leak.