Help trouble shoot my problem.

Tombonombona · 05-04-2014, 06:51 PM

I don't think its the ecu. I cleaned off a couple of the spark plugs and it tried to fire, albeit roughly and unsuccessfully... New plugs on order.

Jordo! · 05-04-2014, 07:30 PM

If the plugs are totally fouled, it's possible that this is the problem -- good luck.

I'm still leaning towards bricked ECU and or wrong ECU ROM flashed on there (assuming that can even happen -- don't know if it would just reject it if not a match).

1slow370 · 05-04-2014, 08:01 PM

Quote:

Originally Posted by Jordo!

If the plugs are totally fouled, it's possible that this is the problem -- good luck.

I'm still leaning towards bricked ECU and or wrong ECU ROM flashed on there (assuming that can even happen -- don't know if it would just reject it if not a match).

Wrong rom isn't an issue unless it is an auto rom on a manual or vice versa By that I mean it would still start if the NATS is happy or disabled.

Gary Evans · 05-04-2014, 08:41 PM

Quote:

Originally Posted by Tombonombona

I don't think its the ecu. I cleaned off a couple of the spark plugs and it tried to fire, albeit roughly and unsuccessfully... New plugs on order.

The ECU controls the spark. spark timing and fuel delivery.

Tombonombona · 05-04-2014, 11:25 PM

Quote:

Originally Posted by Gary Evans

The ECU controls the spark. spark timing and fuel delivery.

But if it was bricked, then wouldn't everything just cease to function?

Gary Evans · 05-05-2014, 02:59 AM

Quote:

Originally Posted by Tombonombona

But if it was bricked, then wouldn't everything just cease to function?

If "bricked" means totally destroyed then the answer is yes. The suggestion to swap it out may be the only way to know for sure.

Tombonombona · 05-13-2014, 07:30 PM

Update:

I changed out the plugs for R35 GTR plugs and it started right up. Lots of white smoke coming out the exhaust (not coolant, I know what that smells like, damn subarus) I think it was just all the built up fuel and such from trying to get it to start the last little while.

I had it run for a minute but right before I was going to shut it off ( 10 seconds or so ) the idle started to sound like it was just getting a touch rough.

blackonorange · 05-14-2014, 12:41 AM

Told ya

Nissanboy · 05-14-2014, 01:06 AM

I'd throw away that Jtran tune and get a custom tune at a shop

Jordo! · 05-14-2014, 03:59 AM

So just fouled plugs then? That's good news!

But why did they get so badly fouled? That means either a tuning issue or something is wildly off on the boost levels your ECU thinks are being run, so it's skewing pig rich under load.

jwick · 05-14-2014, 07:28 AM

Quote:

Originally Posted by Nissanboy

I'd throw away that Jtran tune and get a custom tune at a shop

His problems started before that. I completely agree that custom tunes are far superior but keep your bashing to facts

Chuck33079 · 05-14-2014, 07:40 AM

Quote:

Originally Posted by jwick

His problems started before that. I completely agree that custom tunes are far superior but keep your bashing to facts

Actually, wasn't he unable to get the car to run on the safe map JTran sent up there? So that had zero to do with his problem at all and the issue was fouled plugs and whatever fueling issue caused that kind of fouling?

jwick · 05-14-2014, 07:58 AM

Quote:

Originally Posted by Chuck33079

Actually, wasn't he unable to get the car to run on the safe map JTran sent up there? So that had zero to do with his problem at all and the issue was fouled plugs and whatever fueling issue caused that kind of fouling?

I know us engineers don't read too well but

.

1slow370 · 05-14-2014, 12:36 PM

"I write prints I don't read them" - every bad engineer ever

Tombonombona · 05-14-2014, 09:36 PM

I'm thinking of maybe putting it all back together. Putting some new fuel in it, taking it out and giving it a bit of a workout, get some nice high temps in the cats and such. Thought?

05-04-2014, 06:51 PM	#46 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 13	I don't think its the ecu. I cleaned off a couple of the spark plugs and it tried to fire, albeit roughly and unsuccessfully... New plugs on order. __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

05-04-2014, 07:30 PM	#47 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	If the plugs are totally fouled, it's possible that this is the problem -- good luck. I'm still leaning towards bricked ECU and or wrong ECU ROM flashed on there (assuming that can even happen -- don't know if it would just reject it if not a match). __________________ Enjoy it. Destroy it.

05-13-2014, 07:30 PM	#52 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 13	Update: I changed out the plugs for R35 GTR plugs and it started right up. Lots of white smoke coming out the exhaust (not coolant, I know what that smells like, damn subarus) I think it was just all the built up fuel and such from trying to get it to start the last little while. I had it run for a minute but right before I was going to shut it off ( 10 seconds or so ) the idle started to sound like it was just getting a touch rough. GaleForce likes this. __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

05-14-2014, 03:59 AM	#55 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	So just fouled plugs then? That's good news! But why did they get so badly fouled? That means either a tuning issue or something is wildly off on the boost levels your ECU thinks are being run, so it's skewing pig rich under load. __________________ Enjoy it. Destroy it.

05-14-2014, 12:36 PM	#59 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	"I write prints I don't read them" - every bad engineer ever __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-14-2014, 12:41 AM	#53 (permalink)
blackonorange A True Z Fanatic Join Date: Jul 2011 Location: Saskatchewan Posts: 1,078 Drives: 09 370z Rep Power: 16	Told ya

05-14-2014, 01:06 AM	#54 (permalink)
Nissanboy Enthusiast Member Join Date: Dec 2010 Location: H-Town Posts: 378 Drives: Too slow Rep Power: 14	I'd throw away that Jtran tune and get a custom tune at a shop

05-14-2014, 09:36 PM	#60 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 13	I'm thinking of maybe putting it all back together. Putting some new fuel in it, taking it out and giving it a bit of a workout, get some nice high temps in the cats and such. Thought? __________________ 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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