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-   -   Help trouble shoot my problem. (http://www.the370z.com/forced-induction/89433-help-trouble-shoot-my-problem.html)

Tombonombona 05-04-2014 09:54 AM

Quote:

Originally Posted by 1slow370 (Post 2805523)
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.

blackonorange 05-04-2014 03:13 PM

We can with mine tom but I'm not home... For a whilr yet

Tombonombona 05-04-2014 05:51 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 06:30 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 07:01 PM

Quote:

Originally Posted by Jordo! (Post 2806558)
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 07:41 PM

Quote:

Originally Posted by Tombonombona (Post 2806546)
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 10:25 PM

Quote:

Originally Posted by Gary Evans (Post 2806590)
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 01:59 AM

Quote:

Originally Posted by Tombonombona (Post 2806672)
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 06:30 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 05-13-2014 11:41 PM

Told ya

Nissanboy 05-14-2014 12:06 AM

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

Jordo! 05-14-2014 02:59 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 06:28 AM

Quote:

Originally Posted by Nissanboy (Post 2817765)
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 06:40 AM

Quote:

Originally Posted by jwick (Post 2817909)
His problems started before that. I completely agree that custom tunes are far superior but keep your bashing to facts

:iagree:


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 06:58 AM

Quote:

Originally Posted by Chuck33079 (Post 2817932)
:iagree:


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 :iagree:.

1slow370 05-14-2014 11:36 AM

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

Tombonombona 05-14-2014 08:36 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?

DCNISMO 05-14-2014 10:36 PM

All that fuel has gone to your cats when it would not run. I'm thinking your cats are clogged up. Plugs got fouled gradually or an O2 sensor went bad so the fuel was not burned properly and it got dumped to your cats, they got clogged up. Or an O2 sensor went bad and that clogged up the cats. I had that happen on an Integra many moons ago, the extra fuel actually ate through the cats and turned them into straight pipes. It failed inspection, but not by much…took it to MIdas and they showed me what it looked like when they took it off.

Tombonombona 05-14-2014 10:39 PM

Quote:

Originally Posted by DCNISMO (Post 2819102)
All that fuel has gone to your cats when it would not run. I'm thinking your cats are clogged up. Plugs got fouled gradually or an O2 sensor went bad so the fuel was not burned properly and it got dumped to your cats, they got clogged up. Or an O2 sensor went bad and that clogged up the cats. I had that happen on an Integra many moons ago, the extra fuel actually ate through the cats and turned them into straight pipes. It failed inspection, but not by much…took it to MIdas and they showed me what it looked like when they took it off.

So you are saying is I am basically turning into a catless car? haha sweet money saved lol

DCNISMO 05-15-2014 07:37 AM

The cat in my Integra was holed out due to an O2 sensor going bad and dumping fuel into it. But at start-up it would shake and then go to a back-up mode in the ECU and not read the sensor and then it ran fine. The check light would come on. But yes, the extra fuel just cored that thing out. Funny thing is, it just barely failed MD emissions even with really not having a catalytic converter in it. This was a 1987 Integra though. I traded it for a Type-R back in the day. What a sweet car that was.

batboyvaj 11-07-2014 03:59 PM

So was it just the plugs that was causing the issue?

TKomodo 11-10-2014 09:09 AM

Quote:

Originally Posted by jwick (Post 2799634)
I would also suggest a long pair of needle nose pliers (double hinged for narrow openings if you can find them) as the socket gets stuck on the plug most the time and you have to fish it out.

use electrical tape around the socket and extension to prevent the socket from separating from the extension and you won't have to fish the socket out


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