initial start up after swap-HELP - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

devonkyle77 · 10-20-2008, 06:35 PM

i was told my multiple people just to make contact with the tip of the plug to the head.

96Turbo · 10-20-2008, 07:01 PM

that works too....

devonkyle77 · 10-20-2008, 07:18 PM

i am very confident in the wiring btw, it was done by phase2. how do i confirm ecu is getting power? i assumed since windows and lights worked that ecu worked.

broken240sx · 10-20-2008, 07:25 PM

On s13 there is a ground at the back of the valve cover that is pretty well hidden between the head and the firewall. That's what prevented me from getting spark when I did my swap.

devonkyle77 · 10-20-2008, 07:29 PM

its part of the coilpack harness, right?

96Turbo · 10-20-2008, 07:47 PM

basically, just ground the shit out of ur engine. Here's what i've got:

4 gauge ground from the block to frame rail

8 gauge ground from intake manifold to chassis

8 gauge ground from head (above exhaust manifold) to firewall

No problems for me. It seems like a lot of problems are caused just by grounding issues.

devonkyle77 · 10-20-2008, 08:15 PM

you seriously think its a grounding issue over ignitor?
alright, whatever. ill do it.

sbc · 10-20-2008, 08:47 PM

Unless I missed it, you didnt confirm that you are getting fuel? As far as grounds there is...

the coil pack harness ground which I have grounded to the head
the ecu grounds to the back intake manifold (2 grounds right next to each other)
the ground that connects to the spade on the firewall
maf ground which isn't really relevant right now
the ground on the passenger shock tower ( i believe grounds the alternator?)
and one more ground that should be up by your abs which i cant think of now.

Adding more grounds cant hurt really so you might as well. If I'm forgetting any then someone chime in.

devonkyle77 · 10-20-2008, 09:22 PM

Quote:

Originally Posted by sbc

Unless I missed it, you didnt confirm that you are getting fuel? As far as grounds there is...

the coil pack harness ground which I have grounded to the head
the ecu grounds to the back intake manifold (2 grounds right next to each other)
the ground that connects to the spade on the firewall
maf ground which isn't really relevant right now
the ground on the passenger shock tower ( i believe grounds the alternator?)
and one more ground that should be up by your abs which i cant think of now.

Adding more grounds cant hurt really so you might as well. If I'm forgetting any then someone chime in.

yes, i am getting fuel. furthermore, i know i have all those grounds except im not sure about the last two. i dont have abs though. and i know there is a ground on my intake manifold on the front as well, very large gauge wire.

devonkyle77 · 10-24-2008, 10:44 AM

when i was messing around with the ecu, i noticed a few things. in this first picture it looks like a relay is missing. or perhaps i have it plugged into the wrong place, because the empty spot looks just like the occupied spot. how do i know?

and this here, i found this plug just hanging out under my passenger side carpet. it looks like the harness goes to the back of the car running parallel to the door sill. it was not plugged in...i am concerned.

devonkyle77 · 10-31-2008, 08:05 PM

correction. not getting fuel. fuel pump is not priming

sbc · 11-01-2008, 12:43 PM

If the fuel pump isnt priming make sure the big white plug (F4?) is properly plugged in with the clip in lock position. Its down there right by the firewall and the relays on the passenger side. It may seem snug but it MUST be locked.

Edit
If you need I'll try get pictures of mine down there. Its an s14sr in a 97 so it should help.

devonkyle77 · 11-01-2008, 02:18 PM

its locked.............

96Turbo · 11-01-2008, 02:58 PM

use a test light and check the wire that goes back to the fuel pump at a few points. Start at the back by the pump, and if there's no voltage then work your way back towards the dash and maybe you'll find a problem with the connection, or wire, or somethin...

good luck!

so does that mean you're getting spark now?

devonkyle77 · 11-01-2008, 03:01 PM

no fuel or spark.

96Turbo · 11-01-2008, 03:50 PM

is your ecu getting power? That's what it sounds like to me.

I don't know about as much about SR's...but see if there's an LED on the ECU or somethin to verify it's getting powered on. That would also explain no power to the fuel pump (as it's controlled through the ECU).

that's strange you're having these kind of problems with a professional wiring job...

sbc · 11-01-2008, 05:19 PM

Lets get a better picture of those 2 white plugs. I just took a look at mine and I definitely have 2 white plugs that are connected behind what I believe is the F4 plug. Also I do not have any empty relays. There should be 4 relays from what I remember.

96Turbo · 11-01-2008, 05:24 PM

^agreed. I bet one of those empty relay holders is supposed to be powering your ECU

SpuGen · 11-02-2008, 06:21 PM

Im having the same problems.
Except I hear my fuel pump humming.

10-20-2008, 06:35 PM	#31
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	i was told my multiple people just to make contact with the tip of the plug to the head. __________________ WTB-NARDI wheel & NRG 2.8 QR

10-20-2008, 07:18 PM	#33
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	i am very confident in the wiring btw, it was done by phase2. how do i confirm ecu is getting power? i assumed since windows and lights worked that ecu worked. __________________ WTB-NARDI wheel & NRG 2.8 QR

10-20-2008, 07:29 PM	#35
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	its part of the coilpack harness, right? __________________ WTB-NARDI wheel & NRG 2.8 QR

10-20-2008, 08:15 PM	#37
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	you seriously think its a grounding issue over ignitor? alright, whatever. ill do it. __________________ WTB-NARDI wheel & NRG 2.8 QR

10-24-2008, 10:44 AM	#40
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	when i was messing around with the ecu, i noticed a few things. in this first picture it looks like a relay is missing. or perhaps i have it plugged into the wrong place, because the empty spot looks just like the occupied spot. how do i know? and this here, i found this plug just hanging out under my passenger side carpet. it looks like the harness goes to the back of the car running parallel to the door sill. it was not plugged in...i am concerned. __________________ WTB-NARDI wheel & NRG 2.8 QR

10-20-2008, 07:01 PM	#32
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 32 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	that works too....

10-20-2008, 07:25 PM	#34
broken240sx Leaky Injector Join Date: Jul 2005 Location: new york Posts: 111 Trader Rating: (0) Feedback Score: 0 reviews	On s13 there is a ground at the back of the valve cover that is pretty well hidden between the head and the firewall. That's what prevented me from getting spark when I did my swap.

10-20-2008, 07:47 PM	#36
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 32 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	basically, just ground the shit out of ur engine. Here's what i've got: 4 gauge ground from the block to frame rail 8 gauge ground from intake manifold to chassis 8 gauge ground from head (above exhaust manifold) to firewall No problems for me. It seems like a lot of problems are caused just by grounding issues.

10-20-2008, 08:47 PM	#38
sbc Leaky Injector Join Date: Jul 2005 Location: Canada Posts: 75 Trader Rating: (2) Feedback Score: 2 reviews	Unless I missed it, you didnt confirm that you are getting fuel? As far as grounds there is... the coil pack harness ground which I have grounded to the head the ecu grounds to the back intake manifold (2 grounds right next to each other) the ground that connects to the spade on the firewall maf ground which isn't really relevant right now the ground on the passenger shock tower ( i believe grounds the alternator?) and one more ground that should be up by your abs which i cant think of now. Adding more grounds cant hurt really so you might as well. If I'm forgetting any then someone chime in.

10-31-2008, 08:05 PM	#41
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	correction. not getting fuel. fuel pump is not priming __________________ WTB-NARDI wheel & NRG 2.8 QR

11-01-2008, 12:43 PM	#42
sbc Leaky Injector Join Date: Jul 2005 Location: Canada Posts: 75 Trader Rating: (2) Feedback Score: 2 reviews	If the fuel pump isnt priming make sure the big white plug (F4?) is properly plugged in with the clip in lock position. Its down there right by the firewall and the relays on the passenger side. It may seem snug but it MUST be locked. Edit If you need I'll try get pictures of mine down there. Its an s14sr in a 97 so it should help.

11-01-2008, 02:18 PM	#43
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	its locked............. __________________ WTB-NARDI wheel & NRG 2.8 QR

11-01-2008, 02:58 PM	#44
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 32 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	use a test light and check the wire that goes back to the fuel pump at a few points. Start at the back by the pump, and if there's no voltage then work your way back towards the dash and maybe you'll find a problem with the connection, or wire, or somethin... good luck! so does that mean you're getting spark now?

11-01-2008, 03:01 PM	#45
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 37 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	no fuel or spark. __________________ WTB-NARDI wheel & NRG 2.8 QR

11-01-2008, 03:50 PM	#46
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 32 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	is your ecu getting power? That's what it sounds like to me. I don't know about as much about SR's...but see if there's an LED on the ECU or somethin to verify it's getting powered on. That would also explain no power to the fuel pump (as it's controlled through the ECU). that's strange you're having these kind of problems with a professional wiring job...

11-01-2008, 05:19 PM	#47
sbc Leaky Injector Join Date: Jul 2005 Location: Canada Posts: 75 Trader Rating: (2) Feedback Score: 2 reviews	Lets get a better picture of those 2 white plugs. I just took a look at mine and I definitely have 2 white plugs that are connected behind what I believe is the F4 plug. Also I do not have any empty relays. There should be 4 relays from what I remember.

11-01-2008, 05:24 PM	#48
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 32 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	^agreed. I bet one of those empty relay holders is supposed to be powering your ECU

11-02-2008, 06:21 PM	#49
SpuGen Leaky Injector Join Date: Jun 2007 Location: Vancouver BC Posts: 109 Trader Rating: (2) Feedback Score: 2 reviews	Im having the same problems. Except I hear my fuel pump humming.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode