power cut during tight turns

HogmanZL1 · 03-01-2019, 01:59 PM

I'm wondering if this is traction control, non e-LSD (convertible), software, or other and asking for other opinions. I have never driven the coupe with the e-lsd so not sure how that compares other than the obvious electronic diff benefits.

example- turning right onto an on ramp, rolling into throttle pretty hard, and power stalls until im almost straight then power back on hard as expected. almost as if the engine is choked out. i am not noticing the traction control light coming on but will pay more attention next time it happens.

i know we have a lot of torque to manage, but it doesnt seem normal to have the power cut off completely like its doing to this degree. I have been guessing it was traction control trying to keep me from sliding out. my RPMs are probably pretty low 2-3k when this occurs. maybe it wont do it if more aggressive in higher rpms.

I dont know. just thought i would ask because its annoying sometimes.

thanks for your input.

2018ZL1 · 03-01-2019, 02:20 PM

Quote:

Originally Posted by HogmanZL1

I'm wondering if this is traction control, non e-LSD (convertible), software, or other and asking for other opinions. I have never driven the coupe with the e-lsd so not sure how that compares other than the obvious electronic diff benefits.

example- turning right onto an on ramp, rolling into throttle pretty hard, and power stalls until im almost straight then power back on hard as expected. almost as if the engine is choked out. i am not noticing the traction control light coming on but will pay more attention next time it happens.

i know we have a lot of torque to manage, but it doesnt seem normal to have the power cut off completely like its doing to this degree. I have been guessing it was traction control trying to keep me from sliding out. my RPMs are probably pretty low 2-3k when this occurs. maybe it wont do it if more aggressive in higher rpms.

I dont know. just thought i would ask because its annoying sometimes.

thanks for your input.

I wouldn't think the car would do this on its own... Have you had any mods done to the car? Maybe a wire is rubbing? larger tires? I saw something about a wire being chafed and they put out a recall on it. Something most definitely isnt right because a lot of guys track these cars and I guarantee we would be hearing about it!

Laststandard · 03-01-2019, 02:28 PM

What drive mode are you in?

HogmanZL1 · 03-01-2019, 03:09 PM

sport mode always. fully stock. new set of ps4's. i have a dealer 2 miles away and havent been in to ask them yet. need to try and see if i can replicate it or if its only random.

L98 Z28 · 03-01-2019, 03:11 PM

I have a convertible ZL1 and often turn left onto an on-ramp. The turn is about 90 degrees and has a few bumps. I get a delay before the car will accelerate. I have noticed the traction control light is on, but don't know if its always on when there is a delay. Would usually be in tour or sport mode. I've figured it was the bumps causing the car to think there was a loss of traction but will pay more attention in the future too.

HogmanZL1 · 03-01-2019, 03:19 PM

Quote:

Originally Posted by L98 Z28

I have a convertible ZL1 and often turn left onto an on-ramp. The turn is about 90 degrees and has a few bumps. I get a delay before the car will accelerate. I have noticed the traction control light is on, but don't know if its always on when there is a delay. Would usually be in tour or sport mode. I've figured it was the bumps causing the car to think there was a loss of traction but will pay more attention in the future too.

this sounds similar. an onramp or turning down a street and trying to accelerate while still turning is when i notice it usually.

barnesbr · 03-01-2019, 03:39 PM

Does it happen every time? Do you get a traction control light? My guess would be low fuel in the tank and gravity starving the pump.

Gunkk · 03-01-2019, 05:05 PM

I can get my car to cut engine power in a turn due to the back end breaking loose when say half throttle in Sport/Sport. But it only happens when the back end breaks loose. And it’s usually a good thing otherwise it would be 50/50 odds that the car would spin a la mustang crowd eating mode...

I’ve learned to stay outta the throttle until I have the red rocket straight and pointed where I want it to go.

VAZL1 · 03-02-2019, 01:10 AM

Quote:

Originally Posted by HogmanZL1

I'm wondering if this is traction control, non e-LSD (convertible), software, or other and asking for other opinions. I have never driven the coupe with the e-lsd so not sure how that compares other than the obvious electronic diff benefits.

example- turning right onto an on ramp, rolling into throttle pretty hard, and power stalls until im almost straight then power back on hard as expected. almost as if the engine is choked out. i am not noticing the traction control light coming on but will pay more attention next time it happens.

i know we have a lot of torque to manage, but it doesnt seem normal to have the power cut off completely like its doing to this degree. I have been guessing it was traction control trying to keep me from sliding out. my RPMs are probably pretty low 2-3k when this occurs. maybe it wont do it if more aggressive in higher rpms.

I dont know. just thought i would ask because its annoying sometimes.

thanks for your input.

A quick test would be to turn off the nannies and duplicate the turn, but be ready for anything when you do and make sure its a safe place.

collinms · 03-02-2019, 08:32 AM

I'd run a different mode or in sport mode just click the traction control button once to disable it. You will still have stability control on.

TRZ06 · 03-02-2019, 12:58 PM

May or may not be related , but there are also 4 modes of the E-diff. In Tour, Sport modes the priority is stability, in track mode and the sub menus within track mode, the priority is getting you thru the turn quicker.

I can feel this when taking on/off ramps or even a quick 90 degree sharp turn from a stop. Its also the reason I drive in Track mode and sub menu Sport 1, instead of Sport mode even though I like the throttle mapping better in Sport mode.

Gunkk · 03-02-2019, 02:41 PM

OP is talking about the Vert, which has no E-diff.

TRZ06 · 03-02-2019, 02:48 PM

Quote:

Originally Posted by Gunkk

OP is talking about the Vert, which has no E-diff.

Oh, gotcha. My bad. I didn't know that the conv. didn't get the E-diff.

Badmojo · 03-02-2019, 04:11 PM

When I raced a friend's ZL1 Vert at Laguna Seca, I accidentally started in Tour mode. We were jumping into the car quickly between sessions. I hit the gas after turn 3 and it felt like a parachute deployed out of the back of the car and I was at wide open throttle. My Coupe doesn't do anything like that, but I also haven't left it in Tour mode at the track.

Quote:

Originally Posted by collinms

I'd run a different mode or in sport mode just click the traction control button once to disable it. You will still have stability control on.

If you put it into Track and then tap traction control twice, then it puts the convertibles into "competitive mode". All the modes on the vert are different than the coupe. I have no idea why GM made it so radically different and why they didn't put the eLSD into the vert. The cars handle dramatically different at the track, although I never noticed with spirited driving on the street (coupe/vert).

03-01-2019, 01:59 PM	#1
HogmanZL1 Drives: 2018 ZL1 Convertible Join Date: Oct 2018 Location: Georgia Posts: 79	power cut during tight turns I'm wondering if this is traction control, non e-LSD (convertible), software, or other and asking for other opinions. I have never driven the coupe with the e-lsd so not sure how that compares other than the obvious electronic diff benefits. example- turning right onto an on ramp, rolling into throttle pretty hard, and power stalls until im almost straight then power back on hard as expected. almost as if the engine is choked out. i am not noticing the traction control light coming on but will pay more attention next time it happens. i know we have a lot of torque to manage, but it doesnt seem normal to have the power cut off completely like its doing to this degree. I have been guessing it was traction control trying to keep me from sliding out. my RPMs are probably pretty low 2-3k when this occurs. maybe it wont do it if more aggressive in higher rpms. I dont know. just thought i would ask because its annoying sometimes. thanks for your input.

03-01-2019, 02:28 PM	#3
Laststandard Drives: 2018 1SS 1LE Join Date: Apr 2018 Location: Mpls, MN Posts: 428	What drive mode are you in? __________________ 2018 1SS 1LE (sold)

03-01-2019, 03:39 PM	#7
barnesbr Drives: 2018 ZL1 10 spd Join Date: Jul 2011 Location: Tampa, FL Posts: 87 View My Garage	Does it happen every time? Do you get a traction control light? My guess would be low fuel in the tank and gravity starving the pump. __________________ 2018 Summit White ZL1, A10, Navi, LPO Carbon fuel door, LPO floor mats, Carbon hood scoop, Kooks LT’s, Lingenfeltor 720HP Kit, Roto-Fab CAI, 1LE tail lights/3rd brake light, tinted side markers, ZL1 addons lift pads, 15 % tint. 642HP/664TQ Sold: 2010 RS, Auto, Cyber Grey Metallic, Leather, Navi, Sunroof, HUD. Sold: 2012 1SS LS3 Vert, 6-speed Manual, Inferno Orange Metallic, Borla Catback, CAI intake, Skip shift eliminator.

03-02-2019, 12:58 PM	#11
TRZ06 Drives: 22' Porsche PDK GT4 Join Date: Mar 2018 Location: Bay Area Posts: 2,014	May or may not be related , but there are also 4 modes of the E-diff. In Tour, Sport modes the priority is stability, in track mode and the sub menus within track mode, the priority is getting you thru the turn quicker. I can feel this when taking on/off ramps or even a quick 90 degree sharp turn from a stop. Its also the reason I drive in Track mode and sub menu Sport 1, instead of Sport mode even though I like the throttle mapping better in Sport mode. __________________ Current: 22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS *1LE* (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06

03-01-2019, 03:09 PM	#4
HogmanZL1 Drives: 2018 ZL1 Convertible Join Date: Oct 2018 Location: Georgia Posts: 79	sport mode always. fully stock. new set of ps4's. i have a dealer 2 miles away and havent been in to ask them yet. need to try and see if i can replicate it or if its only random.

03-01-2019, 03:11 PM	#5
L98 Z28 Drives: 2017 ZL1 6spd Convertible NFG Join Date: Jan 2017 Location: Melbourne, FL Posts: 109	I have a convertible ZL1 and often turn left onto an on-ramp. The turn is about 90 degrees and has a few bumps. I get a delay before the car will accelerate. I have noticed the traction control light is on, but don't know if its always on when there is a delay. Would usually be in tour or sport mode. I've figured it was the bumps causing the car to think there was a loss of traction but will pay more attention in the future too.

03-01-2019, 05:05 PM	#8
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,975 View My Garage	I can get my car to cut engine power in a turn due to the back end breaking loose when say half throttle in Sport/Sport. But it only happens when the back end breaks loose. And it’s usually a good thing otherwise it would be 50/50 odds that the car would spin a la mustang crowd eating mode... I’ve learned to stay outta the throttle until I have the red rocket straight and pointed where I want it to go.

03-02-2019, 08:32 AM	#10
collinms Drives: 2017 ZL1 A10 Summit White Join Date: Apr 2018 Location: Cumming, Georgia Posts: 511	I'd run a different mode or in sport mode just click the traction control button once to disable it. You will still have stability control on.

03-02-2019, 02:41 PM	#12
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,975 View My Garage	OP is talking about the Vert, which has no E-diff.

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