Help trouble shoot my problem.

Tombonombona · 04-30-2014, 11:10 AM

It's hard to say. Cipher wouldn't pick up any of those codes. It took my buddies professional reader to pick up on it... And I could only get that good reader onto it after I had put on a safe map, and by then it wasn't starting no matter what map is on it, stock or the safe one. And I can't even think of what mechanical issue could be wrog, I've gone over everything. I'm just running out of ideas.

Chuck33079 · 04-30-2014, 11:13 AM

So you're getting fuel, you've got spark. I'm out of ideas unless the ecu is just bricked. The 2800 rpm at idle thing is really odd.

Tombonombona · 04-30-2014, 11:14 AM

Yeah. It's got myself, my dad, and my mechanical genius friend all stumped

1slow370 · 04-30-2014, 12:15 PM

At this point it is really starting to like the ecu is smoked. unless can is shorted that is the only other thing mentioned under u1024. Sorry.

Nissan Electronics

Chuck33079 · 04-30-2014, 12:16 PM

But can an ECU/CAN fail gradually?

Tombonombona · 04-30-2014, 12:22 PM

Quote:

Originally Posted by Chuck33079

But can an ECU/CAN fail gradually?

Exactly... I know it is not unheard for a reflashed program to lose a couple ones or zeros somewhere. So maybe it dropped a portion of its program, but not enough to make it altogether quit, just enough for it to get confused.

1slow370 · 04-30-2014, 03:30 PM

if it is cracked solder connections that are causing the failure yes. does computer ram fail gradually? Just a catch all though it doesn't mean something else isnt wrong or something is overloading a circuit in the ecu that causes the failure, or there is another condition that is giving the ecu the same symptoms of sensing a communication error with the vvel module. that is why Nissan Electronics

Tombonombona · 05-02-2014, 02:25 PM

Kind of sucks that it seems like I'm the only person to have this problem.. Woohoo having a big expensive boat anchor in the garage.

Jordo! · 05-02-2014, 05:19 PM

Could be a bricked ECU or a blown VVEL sensor.

Have you tried flashing a "back to stock" ROM on there? Also, make sure the ROM file is the correct one for your ECU.

If the injectors are larger and the intake plumbing is different with your set up, it will run pretty roughly, but should still turn over unless bricked.

Tombonombona · 05-02-2014, 07:18 PM

Quote:

Originally Posted by Jordo!

Could be a bricked ECU or a blown VVEL sensor.

Have you tried flashing a "back to stock" ROM on there? Also, make sure the ROM file is the correct one for your ECU.

If the injectors are larger and the intake plumbing is different with your set up, it will run pretty roughly, but should still turn over unless bricked.

I've flashed it back to stock with one for my ecu... All it does is just crank. I guess I can try a VVEL sensor replacement maybe.

1slow370 · 05-03-2014, 03:51 PM

if you have a buddy with a 370z unmarry your cable, flash his with the nats disabled and see if it will start your car. if it does you need an ecu.

Tombonombona · 05-04-2014, 09:54 AM

Quote:

Originally Posted by 1slow370

if you have a buddy with a 370z unmarry your cable, flash his with the nats disabled and see if it will start your car. if it does you need an ecu.

So I'm not quite clear on this. I unmarry my cable ( which is just to put it back to stock I think ). Find someone elses car and flash it, then see if my car starts? I don't understand.

1slow370 · 05-04-2014, 01:07 PM

Yes you take the ecu out of ur buddies car put it in yours flash the ecu with the nats disable box active so it can start your car and see if it works then you know your ecu was bad.

Sent from my HTCONE using Tapatalk

1slow370 · 05-04-2014, 01:08 PM

Then put thier ecu back to stock and go buy yourself a new one.

Sent from my HTCONE using Tapatalk

Tombonombona · 05-04-2014, 02:50 PM

Oh ok I got it now. Didn't know you meant pull out a buddies ecu.... Now if only I knew someone with a 370 that I could do that with.

04-30-2014, 11:10 AM	#1 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 15	It's hard to say. Cipher wouldn't pick up any of those codes. It took my buddies professional reader to pick up on it... And I could only get that good reader onto it after I had put on a safe map, and by then it wasn't starting no matter what map is on it, stock or the safe one. And I can't even think of what mechanical issue could be wrog, I've gone over everything. I'm just running out of ideas. __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

04-30-2014, 11:13 AM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29540	So you're getting fuel, you've got spark. I'm out of ideas unless the ecu is just bricked. The 2800 rpm at idle thing is really odd. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-30-2014, 11:14 AM	#3 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 15	Yeah. It's got myself, my dad, and my mechanical genius friend all stumped __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

04-30-2014, 12:15 PM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	At this point it is really starting to like the ecu is smoked. unless can is shorted that is the only other thing mentioned under u1024. Sorry. Nissan Electronics Chuck33079 likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

04-30-2014, 12:16 PM	#5 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29540	But can an ECU/CAN fail gradually? __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-30-2014, 03:30 PM	#7 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	if it is cracked solder connections that are causing the failure yes. does computer ram fail gradually? Just a catch all though it doesn't mean something else isnt wrong or something is overloading a circuit in the ecu that causes the failure, or there is another condition that is giving the ecu the same symptoms of sensing a communication error with the vvel module. that is why Nissan Electronics __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 04-30-2014 at 03:33 PM.

05-02-2014, 02:25 PM	#8 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 15	Kind of sucks that it seems like I'm the only person to have this problem.. Woohoo having a big expensive boat anchor in the garage. __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

05-02-2014, 05:19 PM	#9 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 419	Could be a bricked ECU or a blown VVEL sensor. Have you tried flashing a "back to stock" ROM on there? Also, make sure the ROM file is the correct one for your ECU. If the injectors are larger and the intake plumbing is different with your set up, it will run pretty roughly, but should still turn over unless bricked. __________________ Enjoy it. Destroy it.

05-03-2014, 03:51 PM	#11 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	if you have a buddy with a 370z unmarry your cable, flash his with the nats disabled and see if it will start your car. if it does you need an ecu. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-04-2014, 01:07 PM	#13 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	Yes you take the ecu out of ur buddies car put it in yours flash the ecu with the nats disable box active so it can start your car and see if it works then you know your ecu was bad. Sent from my HTCONE using Tapatalk __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-04-2014, 01:08 PM	#14 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	Then put thier ecu back to stock and go buy yourself a new one. Sent from my HTCONE using Tapatalk __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-04-2014, 02:50 PM	#15 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 15	Oh ok I got it now. Didn't know you meant pull out a buddies ecu.... Now if only I knew someone with a 370 that I could do that with. __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

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