Throttle Cut at 3500 RPM

ban25 · 07-31-2016, 12:05 AM

I've just gotten my car back and I've been putting breakin mileage on it, but I've run into a curious issue. Once the car has been driven a short distance, roughly 9 miles or so, the throttle will cut off at precisely 3500 RPM for roughly 2-3 seconds. There are no other error indications and no DTCs. If I restart the car, it will provide full range of throttle for another several miles before again cutting off at 3500 RPM.

My car is tuned with EcuTek, so one thought I had was that this is Valet Mode kicking in. However, I'm not on the valet mapping, so all should be normal. That said, I haven't driven the car in 7 months and don't even really remember how to turn valet mode off, if it is on.

Another theory is severe limp mode, but again, there's no SES light and my oil temperature is reading 180F.

Any thoughts?

Cheers,

-Brian

lj909 · 07-31-2016, 02:38 AM

Does it cut or does it start bliping like launch mode? I had a software glitch like this where launch would activate while driving. My tuner had a patch file to fix it.

ban25 · 07-31-2016, 02:57 AM

Quote:

Originally Posted by lj909

Does it cut or does it start bliping like launch mode? I had a software glitch like this where launch would activate while driving. My tuner had a patch file to fix it.

It's a full on cut, but that's a good point. I haven't stayed on the throttle to see if it'll blip like on launch mode. I'll try that tomorrow...

ban25 · 08-01-2016, 09:50 PM

This issue went away as mysteriously as it appeared. Unfortunately, now the car refuses to start -- I suspect the fuel pump (hopefully the OEM one didn't break!).

Nismodean · 07-18-2019, 10:55 PM

I've been having that exact same issue since 2011! It's so random when it happens and it always go away after the car is off for a bit. My car has no tune with only headers and exhaust added. ANY info to help diagnose this would be greatly appreciated!

cv129 · 07-19-2019, 12:10 AM

Quote:

Originally Posted by Nismodean

I've been having that exact same issue since 2011! It's so random when it happens and it always go away after the car is off for a bit. My car has no tune with only headers and exhaust added. ANY info to help diagnose this would be greatly appreciated!

FYI, op has since had a complete rebuild and then sold his car. Good luck, hope some other members can help you on this.

07-31-2016, 12:05 AM	#1 (permalink)
ban25 Enthusiast Member Join Date: Nov 2009 Location: SF, CA Posts: 339 Drives: 17 C7 Z06 M7 Rep Power: 66	Throttle Cut at 3500 RPM I've just gotten my car back and I've been putting breakin mileage on it, but I've run into a curious issue. Once the car has been driven a short distance, roughly 9 miles or so, the throttle will cut off at precisely 3500 RPM for roughly 2-3 seconds. There are no other error indications and no DTCs. If I restart the car, it will provide full range of throttle for another several miles before again cutting off at 3500 RPM. My car is tuned with EcuTek, so one thought I had was that this is Valet Mode kicking in. However, I'm not on the valet mapping, so all should be normal. That said, I haven't driven the car in 7 months and don't even really remember how to turn valet mode off, if it is on. Another theory is severe limp mode, but again, there's no SES light and my oil temperature is reading 180F. Any thoughts? Cheers, -Brian __________________ 2017 Corvette Z06 7MT \| 1LE \| Stage 3 \| DSCSport

07-31-2016, 02:38 AM	#2 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 12	Does it cut or does it start bliping like launch mode? I had a software glitch like this where launch would activate while driving. My tuner had a patch file to fix it. __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

08-01-2016, 09:50 PM	#4 (permalink)
ban25 Enthusiast Member Join Date: Nov 2009 Location: SF, CA Posts: 339 Drives: 17 C7 Z06 M7 Rep Power: 66	This issue went away as mysteriously as it appeared. Unfortunately, now the car refuses to start -- I suspect the fuel pump (hopefully the OEM one didn't break!). __________________ 2017 Corvette Z06 7MT \| 1LE \| Stage 3 \| DSCSport

07-18-2019, 10:55 PM	#5 (permalink)
Nismodean Enthusiast Member Join Date: Oct 2010 Location: Washington Posts: 313 Drives: 2009 RIP Now 2012 Rep Power: 15	I've been having that exact same issue since 2011! It's so random when it happens and it always go away after the car is off for a bit. My car has no tune with only headers and exhaust added. ANY info to help diagnose this would be greatly appreciated! __________________ The Truth, it hurts sometimes. FI LTH & FI CF CBE. This is a 370Z forum, if I want to fling poo at another brand of car and your feelings get hurt, then you're hanging out in the wrong forum (cry elsewhere).

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