S14 SR help please...... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

CRZSWAP · 02-11-2008, 02:21 PM

I have a Zenki S14 that I recently swapped a Kouki S14 SR20DET motor in. I had Yury from HeavyThrottle do the harness for me. After we completed the swap, we are not getting fuel or spark when we turn the key. We manually grounded the pump at the the fuel pump relay and the pump then cuts on but the car still will not start because it has no spark.
We assumed then that it was an ECU problem so I tried my ECU (which has a NA code) in my buddies S13 redtop car (which has a 63 ECU code) and my NA ECU cranks his car right up. So we then tried his 63 ECU in my car and still have the same problem with no fuel or spark.
We have checked all plugs to make sure they are connected, checked all fuses and relays and cheked the CAS. We have not set the timing on the car yet but that shouldnt matter as far as fuel and spark.Please help if possible

khilgers · 02-11-2008, 02:33 PM

bad ignitor?

MavericStephenc · 02-11-2008, 02:35 PM

check for bad ignitor chips.

CRZSWAP · 02-11-2008, 02:39 PM

Nope ignitor is fine.....even tried it in another buddies car. Any more suggestions?

sbanzer123 · 02-11-2008, 02:43 PM

check your grounds

CRZSWAP · 02-11-2008, 04:17 PM

everything seems to be grounded.....I am lost...

CRZSWAP · 02-12-2008, 06:09 PM

Well I am being told that there is no way that my S14 ECU should plug into my buddies S13 SR. supposedly the to harnesses are not compatible? Which would mean that someone had to switch my harness and ECU on my motor with a a S13 harness and ECU before I bought it. But my ECU has a NA code which is a code for a S14 ECU and it plugs right in to my buddies S13 redtop.

WTF??

kamikazekid · 02-12-2008, 06:25 PM

Quote:

Originally Posted by CRZSWAP

Well I am being told that there is no way that my S14 ECU should plug into my buddies S13 SR. supposedly the to harnesses are not compatible? Which would mean that someone had to switch my harness and ECU on my motor with a a S13 harness and ECU before I bought it. But my ECU has a NA code which is a code for a S14 ECU and it plugs right in to my buddies S13 redtop.

WTF??

sounds like its the problem. Ive heard of people getting sr's pieced together. people just grab parts from different sr's and give it to you as a whole swap. try to get a hold of an s-14 ecu and harness ( I know, easier said than done) and try that. you could have an S-14 black top with an S-13 harness and ECU.

CRZSWAP · 02-12-2008, 06:57 PM

Quote:

Originally Posted by kamikazekid

sounds like its the problem. Ive heard of people getting sr's pieced together. people just grab parts from different sr's and give it to you as a whole swap. try to get a hold of an s-14 ecu and harness ( I know, easier said than done) and try that. you could have an S-14 black top with an S-13 harness and ECU.

Well the only thing is, like I said, my ECU has a NA code which would be the right ECU for my S14 Kouki SR.That would mean that they had to swap the stickers on the ECU as well and that is highly unlikely.

CRZSWAP · 02-12-2008, 10:15 PM

Is there a specific way to tell what year motor S14 SR I have?

CRZSWAP · 02-13-2008, 10:29 AM

Wow....anyone please>?

MavericStephenc · 02-13-2008, 10:53 AM

I have an s14 sr and my ecu code sticker is WC.

WC is from a 94-98 S14 Silvia.
J4 is from a 97-98 180sx Type X 5speed.
62 is from a 91-93 180sx or S13 Silvia 5 speed
61,63 is from a 91-93 180sx or S13 Silvia automatic.
E5 is from a 94-96 180sx black top 5 speed.
E6 is from a 94-96 180sx blacktop automatic.

Edited by Kevin for readability.

scperformance · 02-13-2008, 03:32 PM

Quote:

Originally Posted by MavericStephenc

I have an s14 sr and my ecu code sticker is WC. E5 is from a 94-96 180sx black top 5 speed. E6 is from a 94-96 180sx blacktop automatic. WC is from a 94-98 S14 Silvia. 62 is from a 91-93 180sx or S13 Silvia 5 speed. 61,63 is from a 91-93 180sx or S13 Silvia automatic. J4 is from a 97-98 180sx Type X 5speed.

So then which ECU is a NA then? I thought 95-96 SR carried WC and another "W" code like WE i think and 97-98 SRs carried NA and NB ECUs.

Right????

CRZSWAP · 02-13-2008, 09:24 PM

Quote:

Originally Posted by scperformance

So then which ECU is a NA then? I thought 95-96 SR carried WC and another "W" code like WE i think and 97-98 SRs carried NA and NB ECUs.

Right????

Thats what I was told as well and I did some researching and found other people with 98 S14 SR motors with a NA ECU just like me.

Mattlanta · 02-14-2008, 01:14 PM

Quote:

Originally Posted by CRZSWAP

Thats what I was told as well and I did some researching and found other people with 98 S14 SR motors with a NA ECU just like me.

I have the same setup... 1995 S14 chassis and a 1998 S14 SR from a Kouki half cut I have. The correct code for the ECU is NA, so unless someone changed the ECU sticker (which would be totally retarded) then you have the right ECU. Checking with a friend's car is perfect, but the part I don't understand is how your NA ECU ran your friend's red top!??

The problem I ran into with my swap was the same as yours and I found the issue was in my wiring. The fuel pump and start signal wires can get messed up because they have the same colors as other wires and can get confused. Once I took apart my harness and found where each wire was going I was able to get it right and presto!...3 months later mind you

Figure out why your ECU worked in your buddies red top and then if you have the right ECU and harness, and everything else you mentioned, I would have to believe your problem is in the wiring. Where did you get your ECU and original harness from?

MavericStephenc · 02-14-2008, 01:27 PM

I believe that na is just a reference for wiring. as stated on apexis' website, and instructions for wiring their electronics up it shows the s14 ecu as being an n3-a wiring format for the pin out.

http://www.apexi-usa.com/pdfWiring/16.pdf

take note of the pin layout and how its set into the coding (N3-A, N4-A)

also this may help
http://240sxmotoring.com/srwiecupiand.html

Z U L8R · 02-14-2008, 01:44 PM

the NA wiring is different than the WC. i just went over a friend's NA wiring cause he was having problems with his s14. it is different as far as wiring it into the f4/f3 plug.

s13 sr and s14 sr ignitors are the same.

if you were anywhere near GA i would recheck your wiring, but you may wanna try a cam angle sensor. or you can do this.

borrow a cam angle sensor, leave yours bolted in. plug the test cas into your harness. turn the key to the ON position, spin the cam angle sensor and see if you're getting spark. if you are, then plug it into yours and see if you're not, if you're not, then you know the cas is bad without taking yours out and having to reset your timing.

there is a little black ground wire with an eyelet on the subharness that goes to the coil packs, you might wanna take a test light and see if your coil packs are A getting power to them with the key ON, B getting ground to them at all times, C getting ground pulses from the ecu while you're cranking it to the signal wires coded as "E" on your coil pack.

there's not much free info out there on the internet on the s14 WC wiring and there's even less on the NA. if you're still stuck send me a pm.

Dave =]

Mattlanta · 02-14-2008, 01:53 PM

Quote:

Originally Posted by Z U L8R

the NA wiring is different than the WC. i just went over a friend's NA wiring cause he was having problems with his s14. it is different as far as wiring it into the f4/f3 plug.

s13 sr and s14 sr ignitors are the same.

if you were anywhere near GA i would recheck your wiring, but you may wanna try a cam angle sensor. or you can do this.

borrow a cam angle sensor, leave yours bolted in. plug the test cas into your harness. turn the key to the ON position, spin the cam angle sensor and see if you're getting spark. if you are, then plug it into yours and see if you're not, if you're not, then you know the cas is bad without taking yours out and having to reset your timing.

there is a little black ground wire with an eyelet on the subharness that goes to the coil packs, you might wanna take a test light and see if your coil packs are A getting power to them with the key ON, B getting ground to them at all times, C getting ground pulses from the ecu while you're cranking it to the signal wires coded as "E" on your coil pack.

there's not much free info out there on the internet on the s14 WC wiring and there's even less on the NA. if you're still stuck send me a pm.

Dave =]

FYI, when I said I found the problem in the wiring with my swap, it was actually Z U L8R who found the last problem!!! He got mine going in one day!!! Trust me, follow his advice and you'll be running in no time!

Z U L8R · 02-14-2008, 02:27 PM

thx matt =] (matt has an s14 with an NA ecu)

lemme know when u get ur ac lines made.

gl crz,
Dave

CRZSWAP · 02-14-2008, 03:02 PM

Wow you guys are already life savers. Those are actually some of the first logical explanations as to why I might not be able to get it running other than the "Check your Fuses" and "Check for bad Grounds" suggestions I keep getting and I have gone over all that little stuff like a thousand times. I am going to pick up the car tomorrow from a shop in Spartanburg SC and I live in Columbia SC so I will check the CAS when I get it. As far as the harness, I sent it back to Yury(heavythrottle) so he could double check the wiring on it.

Ill let you guys know something tomorrow.

BTW- Im not far from Georgia at all and if it takes me making the drive for someone who actually has knowledge on my swap and could possibly get it running, Ill tow it to you in a heart beat! It has been swapped for 2 months now and no one can get it running.

Z U L8R · 02-14-2008, 09:07 PM

np lemme know man,
Dave =]

CRZSWAP · 02-14-2008, 09:37 PM

Quote:

Originally Posted by Z U L8R

np lemme know man,
Dave =]

Where are u located in GA?

eek · 02-15-2008, 12:18 AM

NA ECU is for s14 Kouki sr20det motors 97-98 ( i have a 98 blacktop sr i pulled out of RHD kouki) that has a NA ecu
WC ECU is s14 sr20det Zenki motors.

Wiring is different for both ecus. I would hit up yuri and have him verify that the harness is wired up for a NA ecu.

Good luck tho, hopefully u can find out the prob. I think i also have the fsm for the s14 kouki. Let me know if u need it.

Z U L8R · 02-15-2008, 06:59 AM

Roswell/Marietta...GA =]

seven.62 · 02-15-2008, 11:37 AM

be sure to check that when your ignition is set to on that your start signal wire is receving 12vlts (orange wire), also can you hear your ecu and fuel pump relays are clicking on? this will help you track down the problem. check that your cas and igniter is reciving voltage from the ecu. feel free to pm me as i have had the same problem when i was getting my swap done and i know how much of a bitch it can be when the damn thing just wont start. there are only certain signals that the ecu needs to see before it gives the okay for the injectors to fire and spark. Also i hope you have a multimeter to test these things because it will definately speed this up.

CRZSWAP · 02-25-2008, 10:00 PM

I just wanted to update.....I am just waiting on Yury to re-check the harness and send it back to me, then hopefully I can get it running. Hopefully he finds the prob in the wiring.

CRZSWAP · 03-05-2008, 10:09 AM

Still waiting on my harness from Yury.........

sblack13 · 03-06-2008, 12:30 AM

he did the same thing to me. I paid $300 for a nice wrap job, worst money i've ever spent. Only to get in the car turn key and viola no ecu power or fuel pump power unless you grounded them or jumped the relays manually. I had a kouki harness, I unloomed it half the wiring was wrong. So I did it myself.

*jspecusa* · 03-06-2008, 01:30 AM

FYI the reason why we don't carry s14 sr ecu,maf, or harness is because people don't understand all 3 have to be matching so if you piece together the swap then you have more problem then saving money.
zenki S14 sr ecu, harness, and maf all have to be the same
kouki s14 sr ecu, harness, and maf all have to be the same
if one of them is wrong then you''ll have a problem.
also make sure your chasis is original a 5 speed not auto.
good luck,

sam

CRZSWAP · 03-06-2008, 10:32 AM

Quote:

Originally Posted by sblack13

he did the same thing to me. I paid $300 for a nice wrap job, worst money i've ever spent. Only to get in the car turn key and viola no ecu power or fuel pump power unless you grounded them or jumped the relays manually. I had a kouki harness, I unloomed it half the wiring was wrong. So I did it myself.

well thats nice to know....I thought it was just me because I have only heard good things about his work but mine is def messed up. When I originally sent the harness to him, he said it would take 10-12 business days and it took him over a month! So I was not too happy from that. Then I get the harness in, and the car wont run so we tried everything we knew possible for troubleshooting but still had no luck. So then I took the car to a "SR specialty shop" and the tried everything and tested everything and told me the prob had to be in the harness. So then I called Yury(a month ago) and told him everything and he said he had a good idea what the problem could be and told me to ship him the harness back to fix it. Now he has had it for over 3weeks again. Between all the time, the 100$ labor bill from the shop, and the money spent on shipping the harness to him, I am getting very aggravated with the service! The motor has been in the car for 3 months and it is still not running because of this harness issue!

02-11-2008, 02:21 PM	#1
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	S14 SR help please...... I have a Zenki S14 that I recently swapped a Kouki S14 SR20DET motor in. I had Yury from HeavyThrottle do the harness for me. After we completed the swap, we are not getting fuel or spark when we turn the key. We manually grounded the pump at the the fuel pump relay and the pump then cuts on but the car still will not start because it has no spark. We assumed then that it was an ECU problem so I tried my ECU (which has a NA code) in my buddies S13 redtop car (which has a 63 ECU code) and my NA ECU cranks his car right up. So we then tried his 63 ECU in my car and still have the same problem with no fuel or spark. We have checked all plugs to make sure they are connected, checked all fuses and relays and cheked the CAS. We have not set the timing on the car yet but that shouldnt matter as far as fuel and spark.Please help if possible

02-11-2008, 02:35 PM	#3
MavericStephenc Zilvia Addict Join Date: Aug 2006 Location: salem mass. Age: 37 Posts: 830 Trader Rating: (0) Feedback Score: 0 reviews	check for bad ignitor chips. __________________ That kind of attitude is SHIT. People with that kind of complacent outlook on law and government are the bane of this country's existence. -Thesquidd Boycott Berkeley and code pink

02-12-2008, 10:15 PM	#10
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Is there a specific way to tell what year motor S14 SR I have? Last edited by CRZSWAP; 02-13-2008 at 12:28 AM..

02-13-2008, 10:53 AM	#12
MavericStephenc Zilvia Addict Join Date: Aug 2006 Location: salem mass. Age: 37 Posts: 830 Trader Rating: (0) Feedback Score: 0 reviews	I have an s14 sr and my ecu code sticker is WC. WC is from a 94-98 S14 Silvia. J4 is from a 97-98 180sx Type X 5speed. 62 is from a 91-93 180sx or S13 Silvia 5 speed 61,63 is from a 91-93 180sx or S13 Silvia automatic. E5 is from a 94-96 180sx black top 5 speed. E6 is from a 94-96 180sx blacktop automatic. Edited by Kevin for readability. __________________ That kind of attitude is SHIT. People with that kind of complacent outlook on law and government are the bane of this country's existence. -Thesquidd Boycott Berkeley and code pink

02-14-2008, 01:27 PM	#16
MavericStephenc Zilvia Addict Join Date: Aug 2006 Location: salem mass. Age: 37 Posts: 830 Trader Rating: (0) Feedback Score: 0 reviews	I believe that na is just a reference for wiring. as stated on apexis' website, and instructions for wiring their electronics up it shows the s14 ecu as being an n3-a wiring format for the pin out. http://www.apexi-usa.com/pdfWiring/16.pdf take note of the pin layout and how its set into the coding (N3-A, N4-A) also this may help http://240sxmotoring.com/srwiecupiand.html __________________ That kind of attitude is SHIT. People with that kind of complacent outlook on law and government are the bane of this country's existence. -Thesquidd Boycott Berkeley and code pink

02-11-2008, 02:33 PM	#2
khilgers Zilvia Addict Join Date: Oct 2005 Location: Twin Cities Age: 44 Posts: 893 Trader Rating: (0) Rides Gallery: khilgers Feedback Score: 0 reviews	bad ignitor?

02-11-2008, 02:39 PM	#4
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Nope ignitor is fine.....even tried it in another buddies car. Any more suggestions?

02-11-2008, 02:43 PM	#5
sbanzer123 Zilvia Junkie Join Date: Aug 2006 Location: Buffalo, NY Age: 36 Posts: 534 Trader Rating: (6) Feedback Score: 6 reviews	check your grounds

02-11-2008, 04:17 PM	#6
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	everything seems to be grounded.....I am lost...

02-12-2008, 06:09 PM	#7
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Well I am being told that there is no way that my S14 ECU should plug into my buddies S13 SR. supposedly the to harnesses are not compatible? Which would mean that someone had to switch my harness and ECU on my motor with a a S13 harness and ECU before I bought it. But my ECU has a NA code which is a code for a S14 ECU and it plugs right in to my buddies S13 redtop. WTF??

02-13-2008, 10:29 AM	#11
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Wow....anyone please>?

02-14-2008, 01:44 PM	#17
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	the NA wiring is different than the WC. i just went over a friend's NA wiring cause he was having problems with his s14. it is different as far as wiring it into the f4/f3 plug. s13 sr and s14 sr ignitors are the same. if you were anywhere near GA i would recheck your wiring, but you may wanna try a cam angle sensor. or you can do this. borrow a cam angle sensor, leave yours bolted in. plug the test cas into your harness. turn the key to the ON position, spin the cam angle sensor and see if you're getting spark. if you are, then plug it into yours and see if you're not, if you're not, then you know the cas is bad without taking yours out and having to reset your timing. there is a little black ground wire with an eyelet on the subharness that goes to the coil packs, you might wanna take a test light and see if your coil packs are A getting power to them with the key ON, B getting ground to them at all times, C getting ground pulses from the ecu while you're cranking it to the signal wires coded as "E" on your coil pack. there's not much free info out there on the internet on the s14 WC wiring and there's even less on the NA. if you're still stuck send me a pm. Dave =] __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-14-2008, 02:27 PM	#19
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	thx matt =] (matt has an s14 with an NA ecu) lemme know when u get ur ac lines made. gl crz, Dave __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-14-2008, 03:02 PM	#20
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Wow you guys are already life savers. Those are actually some of the first logical explanations as to why I might not be able to get it running other than the "Check your Fuses" and "Check for bad Grounds" suggestions I keep getting and I have gone over all that little stuff like a thousand times. I am going to pick up the car tomorrow from a shop in Spartanburg SC and I live in Columbia SC so I will check the CAS when I get it. As far as the harness, I sent it back to Yury(heavythrottle) so he could double check the wiring on it. Ill let you guys know something tomorrow. BTW- Im not far from Georgia at all and if it takes me making the drive for someone who actually has knowledge on my swap and could possibly get it running, Ill tow it to you in a heart beat! It has been swapped for 2 months now and no one can get it running.

02-14-2008, 09:07 PM	#21
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	np lemme know man, Dave =] __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-15-2008, 12:18 AM	#23
eek Zilvia FREAK! Join Date: Feb 2004 Location: California Age: 44 Posts: 1,025 Trader Rating: (29) Feedback Score: 29 reviews	NA ECU is for s14 Kouki sr20det motors 97-98 ( i have a 98 blacktop sr i pulled out of RHD kouki) that has a NA ecu WC ECU is s14 sr20det Zenki motors. Wiring is different for both ecus. I would hit up yuri and have him verify that the harness is wired up for a NA ecu. Good luck tho, hopefully u can find out the prob. I think i also have the fsm for the s14 kouki. Let me know if u need it.

02-15-2008, 06:59 AM	#24
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	Roswell/Marietta...GA =] __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-15-2008, 11:37 AM	#25
seven.62 Zilvia Member Join Date: Oct 2006 Location: new orleans Age: 41 Posts: 165 Trader Rating: (1) Feedback Score: 1 reviews	be sure to check that when your ignition is set to on that your start signal wire is receving 12vlts (orange wire), also can you hear your ecu and fuel pump relays are clicking on? this will help you track down the problem. check that your cas and igniter is reciving voltage from the ecu. feel free to pm me as i have had the same problem when i was getting my swap done and i know how much of a bitch it can be when the damn thing just wont start. there are only certain signals that the ecu needs to see before it gives the okay for the injectors to fire and spark. Also i hope you have a multimeter to test these things because it will definately speed this up. __________________ thats no dome, bit@h go HOME!

02-25-2008, 10:00 PM	#26
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	I just wanted to update.....I am just waiting on Yury to re-check the harness and send it back to me, then hopefully I can get it running. Hopefully he finds the prob in the wiring.

03-05-2008, 10:09 AM	#27
CRZSWAP Zilvia Member Join Date: Aug 2007 Location: Cola. SC Posts: 245 Trader Rating: (5) Feedback Score: 5 reviews	Still waiting on my harness from Yury.........

03-06-2008, 12:30 AM	#28
sblack13 Zilvia FREAK! Join Date: May 2005 Location: Seattle Age: 38 Posts: 1,016 Trader Rating: (10) Feedback Score: 10 reviews	he did the same thing to me. I paid $300 for a nice wrap job, worst money i've ever spent. Only to get in the car turn key and viola no ecu power or fuel pump power unless you grounded them or jumped the relays manually. I had a kouki harness, I unloomed it half the wiring was wrong. So I did it myself.

03-06-2008, 01:30 AM	#29
jspecusa Premium Member Join Date: Feb 2002 Location: socal Posts: 1,339 Trader Rating: (7) Feedback Score: 7 reviews	FYI the reason why we don't carry s14 sr ecu,maf, or harness is because people don't understand all 3 have to be matching so if you piece together the swap then you have more problem then saving money. zenki S14 sr ecu, harness, and maf all have to be the same kouki s14 sr ecu, harness, and maf all have to be the same if one of them is wrong then you''ll have a problem. also make sure your chasis is original a 5 speed not auto. good luck, sam __________________ Nissan Japan: "road to happiness has many curves" Jdmlivin: "Jdm is dead, the yen is crazy"