Sr20det Swap problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silvildo72 · 07-01-2012, 09:55 AM

So im putting a Black top s13 SR in my 1989 240 I tried to started yesterday and it just cranks it dosnt start, I realized that the engine is getting no fuel because the fuel pump is not priming and the fuel pump is not priming because The ECU is getting no power

everything is connected properly, except for this plug coming from the fuse box which I don't know where it connects. If anyone knows where it goes or can give me any advice it would be very appreciated.

*wangan_cruiser* · 07-01-2012, 01:15 PM

check the wires where all the splices might be a break.

*brndck* · 07-01-2012, 01:33 PM

the plug in your photo looks like one of the a/c plugs.
what you need to do is find the ecu pinout for the ecu your using (#62? j5?) they're easy to find on google, then get a power probe or voltmeter and check all the powers and grounds at the ecu. in my experience with #62 ecus there is a ground for the egi relay that doesn't work always. i've had excellent success clipping that wire at the ecu and then running the relay ground to a manual switch. also doubles as an excellent kill switch.

silvildo72 · 07-02-2012, 03:17 PM

Alright so I checked my ecu (#62) at pin 38,47 (ECCS Power) im getting 8-10V, at pin 39 and 48 ( ECCS Ground) there is continuity and pin 46 ( ECCS Backup power) theres 11V. So it should be good? I checked all my fuses and relays and there all getting 12v exept for the EGI pump which gets nothing, could it be the only problem? But my ECU's red light wont turn on.

godsmack · 07-02-2012, 04:46 PM

is your ecu grounded properly?

KiLLeR2001 · 07-02-2012, 04:49 PM

Check fuel pump 10A fuse. Check the black w/ pink stripe wire. That's the signal wire from ECU to EGI relay.

silvildo72 · 07-02-2012, 05:14 PM

how is the ecu suposed to be grounded? the 10a fuse is good, i checked the wire and the conection is closed so thats good

KiLLeR2001 · 07-02-2012, 05:50 PM

Verify that all power and all ground wires have continuity. There could be a possibility that you have a fried ECU if everything checks out and it still won't power on.

silvildo72 · 07-02-2012, 05:59 PM

They all have continuity, and I have 2 ECU's one is a stock #62 and the other one is a chipped #62 and both of them the red light dont turn on when I turn the key on the on position. I really hope i dont have 2 fried ecu's haha

kouki-silver-silvia98 · 07-27-2012, 06:38 PM

ground the computer case to the body with all the other ground wires, im having the same problem, i had to plice into a wire from the body harness to the ecu 12v and then i got power to the ecu and then it cranked over and started but everything when haywire. all the relays started fluttering and now it wont start again but im puttint a s15 motor with a zanki harness and zanki ecu into a kouki n/a.

07-01-2012, 09:55 AM	#1
silvildo72 Leaky Injector Join Date: Aug 2010 Location: Ottawa Age: 33 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	Sr20det Swap problem So im putting a Black top s13 SR in my 1989 240 I tried to started yesterday and it just cranks it dosnt start, I realized that the engine is getting no fuel because the fuel pump is not priming and the fuel pump is not priming because The ECU is getting no power everything is connected properly, except for this plug coming from the fuse box which I don't know where it connects. If anyone knows where it goes or can give me any advice it would be very appreciated.

07-02-2012, 05:50 PM	#8
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Verify that all power and all ground wires have continuity. There could be a possibility that you have a fried ECU if everything checks out and it still won't power on. __________________

07-01-2012, 01:15 PM	#2
wangan_cruiser kouki man Join Date: Apr 2006 Location: downtown oakland,ca Age: 40 Posts: 3,539 Trader Rating: (36) Feedback Score: 36 reviews	check the wires where all the splices might be a break.

07-02-2012, 03:17 PM	#4
silvildo72 Leaky Injector Join Date: Aug 2010 Location: Ottawa Age: 33 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	Alright so I checked my ecu (#62) at pin 38,47 (ECCS Power) im getting 8-10V, at pin 39 and 48 ( ECCS Ground) there is continuity and pin 46 ( ECCS Backup power) theres 11V. So it should be good? I checked all my fuses and relays and there all getting 12v exept for the EGI pump which gets nothing, could it be the only problem? But my ECU's red light wont turn on.

07-02-2012, 04:46 PM	#5
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 39 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	is your ecu grounded properly?

07-02-2012, 04:49 PM	#6
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Check fuel pump 10A fuse. Check the black w/ pink stripe wire. That's the signal wire from ECU to EGI relay. __________________

07-02-2012, 05:14 PM	#7
silvildo72 Leaky Injector Join Date: Aug 2010 Location: Ottawa Age: 33 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	how is the ecu suposed to be grounded? the 10a fuse is good, i checked the wire and the conection is closed so thats good

07-02-2012, 05:59 PM	#9
silvildo72 Leaky Injector Join Date: Aug 2010 Location: Ottawa Age: 33 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	They all have continuity, and I have 2 ECU's one is a stock #62 and the other one is a chipped #62 and both of them the red light dont turn on when I turn the key on the on position. I really hope i dont have 2 fried ecu's haha

07-27-2012, 06:38 PM	#10
kouki-silver-silvia98 Join Date: Jul 2012 Location: japan Age: 42 Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	ground the computer case to the body with all the other ground wires, im having the same problem, i had to plice into a wire from the body harness to the ecu 12v and then i got power to the ecu and then it cranked over and started but everything when haywire. all the relays started fluttering and now it wont start again but im puttint a s15 motor with a zanki harness and zanki ecu into a kouki n/a.