s14 rb25 swap no key power - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Okidamage · 09-13-2012, 04:12 AM

alright guys im a little new here but not to cars. I just completed a rb25 swap into my s14 kouki with a plug and play harness. But when i turn the key i get no power and the starter wont turnover. the accessorys work but thats it as for the engine i grounded the crap out of it and still nothing. I checked all fuse's and all grounds and plugs but yet still nothing. The dummy lights wont turn on and also the fuel pump dosent turn on. So im at a loss here dose anyone know whats going on with it possibly?

stealthsr20 · 09-13-2012, 04:33 AM

If your check engine light isnt coming on when you turn the key to the on posistion the ecu either isnt getting power or is junk. If you have access to another ecu try swapping them.

Sent from my SCH-R760 using Tapatalk 2

Okidamage · 09-13-2012, 06:07 AM

Sadly enough i also tried that and its still got nothing going on.

Okidamage · 09-14-2012, 06:04 AM

so update ecu isnt getting power.

Michaelwinne · 09-14-2012, 10:24 PM

I'm having a similar problem in my S13. Engine turns over, fuel pump primes but ECU doesn't light up and I have no spark

nyc240sx · 10-08-2012, 04:14 PM

I am tired of this crap i turn the key numerous times iam not getting any crank i am trying to prime the motor but no response from the starter..The ecu light comes on steady red so it seems like its getting power. I got the harness from carl h couple of years ago now i am thinking about getting a new harness from wiring specialties... I changed relays its still the same..How many grounds should i have on the motor..what i have currently is the block grounded, intake manifold grounded, head ground on exhaust side to firewall. alternator ground, does the starter need a ground wire? or its just the power and the one wire connector
any help appreciated

Okidamage · 10-11-2012, 10:27 PM

I ended up getting mine started make sure that the cable going to the starter (not the power but the little black connector) is connected, check your f4 harness for any cuts near connector. Also check to make sure the power going to the starter is conected firmly, while doing this trace it and check where it conects to the fuse box and make sure that, that is also tight. Also if you have wire in or previously had a turbo timer ether depsose of the pos. or make sure that there is nothing there causing a shortage. Pretty much to sum it all up make sure all of your wires are intact and are conected properly and tight. Mine ended out being the ignition switch had a shortage due to the turbo timer harness. Also there is no ground for the starter.

nyc240sx · 10-12-2012, 12:14 AM

i had the battery sitting wrong in the box and i didnt look when i connected the + and - wires created some big sparks.. before when i would connect the cables the correct way i would see a lil spark when putting negative cable on negative terminal now i am not seeing any of that somethings not right i have my engine bay fuse box in the trunk

stealthsr20 · 10-17-2012, 07:28 AM

Ouch ..... You may be ok... but you definitely popped some things...
I wish you luck.

09-13-2012, 04:12 AM	#1
Okidamage Leaky Injector Join Date: May 2012 Location: Anchorage Alaska Posts: 120 Trader Rating: (4) Feedback Score: 4 reviews	s14 rb25 swap no key power alright guys im a little new here but not to cars. I just completed a rb25 swap into my s14 kouki with a plug and play harness. But when i turn the key i get no power and the starter wont turnover. the accessorys work but thats it as for the engine i grounded the crap out of it and still nothing. I checked all fuse's and all grounds and plugs but yet still nothing. The dummy lights wont turn on and also the fuel pump dosent turn on. So im at a loss here dose anyone know whats going on with it possibly?

09-13-2012, 04:33 AM	#2
stealthsr20 Zilvia Member Join Date: Nov 2008 Location: oklahoma Age: 37 Posts: 256 Trader Rating: (3) Feedback Score: 3 reviews	If your check engine light isnt coming on when you turn the key to the on posistion the ecu either isnt getting power or is junk. If you have access to another ecu try swapping them. Sent from my SCH-R760 using Tapatalk 2 __________________ "You always getting emotional after a gunfight"

10-08-2012, 04:14 PM	#6
nyc240sx Zilvia FREAK! Join Date: Jul 2009 Location: new york city bitch Age: 38 Posts: 1,022 Trader Rating: (14) Feedback Score: 14 reviews	rb25 not cranking when turn the key to on I am tired of this crap i turn the key numerous times iam not getting any crank i am trying to prime the motor but no response from the starter..The ecu light comes on steady red so it seems like its getting power. I got the harness from carl h couple of years ago now i am thinking about getting a new harness from wiring specialties... I changed relays its still the same..How many grounds should i have on the motor..what i have currently is the block grounded, intake manifold grounded, head ground on exhaust side to firewall. alternator ground, does the starter need a ground wire? or its just the power and the one wire connector any help appreciated

10-17-2012, 07:28 AM	#9
stealthsr20 Zilvia Member Join Date: Nov 2008 Location: oklahoma Age: 37 Posts: 256 Trader Rating: (3) Feedback Score: 3 reviews	Ouch ..... You may be ok... but you definitely popped some things... I wish you luck. __________________ "You always getting emotional after a gunfight"

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09-13-2012, 06:07 AM	#3
Okidamage Leaky Injector Join Date: May 2012 Location: Anchorage Alaska Posts: 120 Trader Rating: (4) Feedback Score: 4 reviews	Sadly enough i also tried that and its still got nothing going on.

09-14-2012, 06:04 AM	#4
Okidamage Leaky Injector Join Date: May 2012 Location: Anchorage Alaska Posts: 120 Trader Rating: (4) Feedback Score: 4 reviews	so update ecu isnt getting power.

09-14-2012, 10:24 PM	#5
Michaelwinne Zilvia Junkie Join Date: Dec 2011 Location: Hurlburt Field, Florida Age: 33 Posts: 447 Trader Rating: (12) Feedback Score: 12 reviews	I'm having a similar problem in my S13. Engine turns over, fuel pump primes but ECU doesn't light up and I have no spark

10-11-2012, 10:27 PM	#7
Okidamage Leaky Injector Join Date: May 2012 Location: Anchorage Alaska Posts: 120 Trader Rating: (4) Feedback Score: 4 reviews	I ended up getting mine started make sure that the cable going to the starter (not the power but the little black connector) is connected, check your f4 harness for any cuts near connector. Also check to make sure the power going to the starter is conected firmly, while doing this trace it and check where it conects to the fuse box and make sure that, that is also tight. Also if you have wire in or previously had a turbo timer ether depsose of the pos. or make sure that there is nothing there causing a shortage. Pretty much to sum it all up make sure all of your wires are intact and are conected properly and tight. Mine ended out being the ignition switch had a shortage due to the turbo timer harness. Also there is no ground for the starter.

10-12-2012, 12:14 AM	#8
nyc240sx Zilvia FREAK! Join Date: Jul 2009 Location: new york city bitch Age: 38 Posts: 1,022 Trader Rating: (14) Feedback Score: 14 reviews	i had the battery sitting wrong in the box and i didnt look when i connected the + and - wires created some big sparks.. before when i would connect the cables the correct way i would see a lil spark when putting negative cable on negative terminal now i am not seeing any of that somethings not right i have my engine bay fuse box in the trunk