I have a serious engine problem

Mike · 07-31-2010, 09:50 AM

serious, as in time sensitive

Car ran fine all day yesterday at ZCON autocross. This morning it has no power at all. It will rev all the way to redline in first gear, but I have the scan gauge hooked up to it and I'm not getting more than 15% on the TPS reading with the pedal all the way down. Have the battery disconnected now for a bit, then John from Z1 is going to hook the Osiris up to it in a little while.

I just hope I don't miss the track day tomorrow

oh yeah, no codes, no CEL

Chris@FsP · 07-31-2010, 10:23 AM

Have you tried to reset the ecu?

LateralG'z · 07-31-2010, 10:28 AM

Good luck with this, let us know what happened and how you fixed it

Mike · 07-31-2010, 10:43 AM

Quote:

Originally Posted by Chris@FsP

Have you tried to reset the ecu?

Only by disconecting the battery for an hour. No joy

Caravanshaka · 07-31-2010, 10:57 AM

Good luck with the fix, Mike

red6spd · 07-31-2010, 11:17 AM

Weird, Mass airflow problem???? Good luck and keep us posted.

One_Quick_Z · 07-31-2010, 02:14 PM

What is your oil temp/ you might be in limp mode/ or it sounds like the MAF do you have aftermarket intakes?

DAN

RCZ · 07-31-2010, 02:32 PM

Mike, you dont have to unplug it for an hour, you just have to unplug it and pump the brakes like 5 times. Sounds to me like an ecu glitch that will fix itself.

Mike · 07-31-2010, 03:55 PM

nope, nothing that easy.,
Fortunately, being at Zcon, I had the best minds from Z1, Forged, Injected, UpRev and Nissan Motorsports working on it, and noone has a clue what it could be. On one data logging run that Sharif did, while in second gear, it kept cycling between full and reduced power, leading the guy from UpRev to believe its a problem involving VVL, and that its probably a loose pin in the harness somewhere.

We reflashed the ECU with the stock tune, reflashed it with another Z1 customers tune and reflashed it back to stock. Did the accelerator pedal reset procedure, did the TB reset procedure and a few other things and nothing works.

Its gonna have to go the dealer and get hooked up to the consult-3 to go from here, but its not even throwing any codes. You would have thought they would have the consult at Nissan HQ, but apparently, they aren't allowed to have any tools there.

Mike · 07-31-2010, 03:57 PM

its back on the trailer, going home in the morning, no track day for me

On the bright side, I came in 9th overall in the autocross, and on street tires at that. Yoko AD-08s rock! They really behave like R compounds.

CBRich · 07-31-2010, 04:09 PM

Sucks to hear you had to miss track day. Please post the solution when you've got it. You never know who could be next.

fullmonty · 07-31-2010, 04:13 PM

That sucks man, I hope it works out for you!

LateralG'z · 07-31-2010, 05:11 PM

Good luck with finding the solution

Mike · 07-31-2010, 06:53 PM

Not going to miss the track day!!!! Sharing my good friend an zdayz CEO Bryan Settles beast of a 350z track car. It doesn't even have a dashboard!

Jordo! · 07-31-2010, 07:08 PM

Good luck. Sounds like the TPS crapped out or has a short.

07-31-2010, 09:50 AM	#1 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	I have a serious engine problem serious, as in time sensitive Car ran fine all day yesterday at ZCON autocross. This morning it has no power at all. It will rev all the way to redline in first gear, but I have the scan gauge hooked up to it and I'm not getting more than 15% on the TPS reading with the pedal all the way down. Have the battery disconnected now for a bit, then John from Z1 is going to hook the Osiris up to it in a little while. I just hope I don't miss the track day tomorrow oh yeah, no codes, no CEL __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968 Last edited by Mike; 07-31-2010 at 09:58 AM.

07-31-2010, 10:28 AM	#3 (permalink)
LateralG'z Track Member Join Date: Nov 2009 Location: Oklahoma Posts: 876 Drives: 370z Rep Power: 16	Good luck with this, let us know what happened and how you fixed it __________________ 2010 Mag Black, 6MT,

07-31-2010, 10:57 AM	#5 (permalink)
Caravanshaka I shake Caravans Join Date: Apr 2009 Location: north Dallas Posts: 9,517 Drives: everyone crazy Rep Power: 42	Good luck with the fix, Mike __________________ ____________________ PROJECT DiaD - Sold but not forgotten! The first testicular guard, the "Cup," was used in Hockey in 1874 and the first helmet was used in 1974. That means it only took 100 years for men to realize that in order to work the penis, the brain must remain whole.

07-31-2010, 11:17 AM	#6 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	Weird, Mass airflow problem???? Good luck and keep us posted. __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

07-31-2010, 02:14 PM	#7 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 218	What is your oil temp/ you might be in limp mode/ or it sounds like the MAF do you have aftermarket intakes? DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

07-31-2010, 10:23 AM	#2 (permalink)
Chris@FsP Enthusiast Member Join Date: Dec 2009 Location: Tulsa, OK Posts: 430 Drives: 2008 350Z TT Rep Power: 368	Have you tried to reset the ecu?

07-31-2010, 02:32 PM	#8 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	Mike, you dont have to unplug it for an hour, you just have to unplug it and pump the brakes like 5 times. Sounds to me like an ecu glitch that will fix itself.

07-31-2010, 03:55 PM	#9 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	nope, nothing that easy., Fortunately, being at Zcon, I had the best minds from Z1, Forged, Injected, UpRev and Nissan Motorsports working on it, and noone has a clue what it could be. On one data logging run that Sharif did, while in second gear, it kept cycling between full and reduced power, leading the guy from UpRev to believe its a problem involving VVL, and that its probably a loose pin in the harness somewhere. We reflashed the ECU with the stock tune, reflashed it with another Z1 customers tune and reflashed it back to stock. Did the accelerator pedal reset procedure, did the TB reset procedure and a few other things and nothing works. Its gonna have to go the dealer and get hooked up to the consult-3 to go from here, but its not even throwing any codes. You would have thought they would have the consult at Nissan HQ, but apparently, they aren't allowed to have any tools there. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

07-31-2010, 03:57 PM	#10 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	its back on the trailer, going home in the morning, no track day for me On the bright side, I came in 9th overall in the autocross, and on street tires at that. Yoko AD-08s rock! They really behave like R compounds. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

07-31-2010, 04:09 PM	#11 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	Sucks to hear you had to miss track day. Please post the solution when you've got it. You never know who could be next.

07-31-2010, 04:13 PM	#12 (permalink)
fullmonty A True Z Fanatic Join Date: Nov 2009 Location: Dirty Jersey Posts: 7,762 Drives: 370 Touring/Sport Rep Power: 33	That sucks man, I hope it works out for you! __________________

07-31-2010, 05:11 PM	#13 (permalink)
LateralG'z Track Member Join Date: Nov 2009 Location: Oklahoma Posts: 876 Drives: 370z Rep Power: 16	Good luck with finding the solution __________________ 2010 Mag Black, 6MT,

07-31-2010, 06:53 PM	#14 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	Not going to miss the track day!!!! Sharing my good friend an zdayz CEO Bryan Settles beast of a 350z track car. It doesn't even have a dashboard! __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

07-31-2010, 07:08 PM	#15 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	Good luck. Sounds like the TPS crapped out or has a short. __________________ Enjoy it. Destroy it.

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