2017 zl1 reving up by itself

Jonru · 01-14-2017, 06:17 PM

last week I was leaving work and was kinda pulling forward slowly working the clutch and giving the car a little throttle and then all of the sudden I had the clutch engage and my foot off the throttle and the car revved up to around 4k rpm by itself ,then yesterday it did the same thing after I picked up my son from school same thing I was working the clutch and pulling forward because of traffic and it did it again and then today did the same thing ,I checked the accelerator pedal its all good there is nothing pushing it or in the way what could be causing this the car only has 1,800 miles?

KLR ZL1 · 01-14-2017, 09:25 PM

Probably a bad TPS. If it is doing it enough then take it in and the dealer should be able to fix it.

Jonru · 01-15-2017, 09:35 AM

thanks I will

Lashu74 · 01-15-2017, 09:55 AM

I would think that a bad tps would throw a cel. Do you notice it with rev matching on and off? Definitely take it to dealer asap hopefully they can replicate it, you should try to record it if possible so you have proof. Bummer man hope they get it taken care of for you!

hawk02 · 01-15-2017, 09:56 AM

Could you have had rev matching enabled?

KaBoom1701 · 01-15-2017, 11:34 AM

Quote:

Originally Posted by hawk02

Could you have had rev matching enabled?

+1

This would be my guess....

bybcous · 01-15-2017, 11:40 AM

Was the motor warm, or did you jump in and go? My car will accelerate on its own pretty hard if I just hop in and go. I made a topic about it on my SS when I first got the car.

NB2017ZL1 · 01-15-2017, 11:51 AM

Quote:

Originally Posted by hawk02

Could you have had rev matching enabled?

+1

17CamaroZL1 · 01-15-2017, 04:05 PM

Why would rev match cause it to rev up when trying to pull out? Isn't it supposed to match engine revs with the speed of the vehicle (which would be near zero for his instance), the gear you're in, and the gear you're shifting to? The only time it should rev the engine is when downshifting to a lower gear and it should rev it to the RPM that the new gear would need for the current speed. Not saying it's not a possible cause. Just don't understand why it would be.

Lashu74 · 01-15-2017, 04:21 PM

Agreed, I was asking because if it was only doing it when it was on maybe the rev matching was malfunctioning?

TJay74 · 01-15-2017, 04:22 PM

My guess is active rev match causing the problem. But, ARM is off by default at start up from what I read.

17CamaroZL1 · 01-15-2017, 07:06 PM

Quote:

Originally Posted by TJay74

My guess is active rev match causing the problem. But, ARM is off by default at start up from what I read.

Correct. It is off by default and must be turned on.

TheGC1 · 01-16-2017, 12:41 PM

Wow, I thought I was crazy when it happened to me... Wow.

I actually had this happen to me at the greatest time a few weeks ago. I had just grabbed my food from the window at a Chik-fil-A drive through, and I pulled forward slightly and then depressed the clutch to slow down stop again... The damn thing revved steadily to 4k-5k or more. I pulled it out of gear and released the clutch and a few other things in that split second it couple seconds. Not sure what finally made it normalize because it was honestly VERY damn stressful. It was a crowded lunch time and they had the employee out directing the loop around the building... So yeah, it was quite the spectacle surrounded by other cars, folks walking around and a handful of employees out there too. Pretty damn embarrassing actually.

It happened that once and hasn't happened since, but I hope it doesn't happen again. Seems like a pretty dangerous thing that the car has the potential to revv like that... Imagine the horrors depending on the scenario... a lot of potential for someone to get hurt, the car to get hurt... Damn.

I would love to know what the issue is here, and I'm certain that this cannot be replicated in front of the dealer's service department...

KLR ZL1 · 01-16-2017, 01:07 PM

Quote:

Originally Posted by TheGC1

Wow, I thought I was crazy when it happened to me... Wow.

I actually had this happen to me at the greatest time a few weeks ago. I had just grabbed my food from the window at a Chik-fil-A drive through, and I pulled forward slightly and then depressed the clutch to slow down stop again... The damn thing revved steadily to 4k-5k or more. I pulled it out of gear and released the clutch and a few other things in that split second it couple seconds. Not sure what finally made it normalize because it was honestly VERY damn stressful. It was a crowded lunch time and they had the employee out directing the loop around the building... So yeah, it was quite the spectacle surrounded by other cars, folks walking around and a handful of employees out there too. Pretty damn embarrassing actually.

It happened that once and hasn't happened since, but I hope it doesn't happen again. Seems like a pretty dangerous thing that the car has the potential to revv like that... Imagine the horrors depending on the scenario... a lot of potential for someone to get hurt, the car to get hurt... Damn.

I would love to know what the issue is here, and I'm certain that this cannot be replicated in front of the dealer's service department...

Yea imagine if you actually let the clutch out when it happens. Could hit something or someone. Not good at all. It almost sounds like launch control is revving the engine on its own. Hope to see what this is and that they fix it. I'm sure it will be just a reprogram.

01-14-2017, 06:17 PM	#1
Jonru Drives: 2017 zl1 Join Date: Dec 2016 Location: Florida Posts: 36	2017 zl1 reving up by itself last week I was leaving work and was kinda pulling forward slowly working the clutch and giving the car a little throttle and then all of the sudden I had the clutch engage and my foot off the throttle and the car revved up to around 4k rpm by itself ,then yesterday it did the same thing after I picked up my son from school same thing I was working the clutch and pulling forward because of traffic and it did it again and then today did the same thing ,I checked the accelerator pedal its all good there is nothing pushing it or in the way what could be causing this the car only has 1,800 miles?

01-14-2017, 09:25 PM	#2
KLR ZL1 H-Town Camaro Club Member Drives: 17 Hyper Blue Metallic KLR-ZL1 Join Date: May 2009 Location: Pearland Tx. Posts: 2,035 View My Garage	Probably a bad TPS. If it is doing it enough then take it in and the dealer should be able to fix it. __________________

01-15-2017, 09:56 AM	#5
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,283 View My Garage	Could you have had rev matching enabled? __________________

01-15-2017, 11:40 AM	#7
bybcous Drives: 2016 Hyper Blue 1SS Join Date: Jul 2015 Location: hampton roads Posts: 2,763	Was the motor warm, or did you jump in and go? My car will accelerate on its own pretty hard if I just hop in and go. I made a topic about it on my SS when I first got the car. __________________ 1ss/Auto-Hyper Blue acs carbon flash spoiler, bmr springs, gm clear tails. Texas speed cam, 223/227 .635/.635 116 LSA, Kooks Long Tube Headers with green cats, MSD Atomic Air Force Intake, CAI Cold Air Intake, QTP cutouts. 503 hp Best so far 11.5 at 123 with a 1.83 60ft. BMR lower and upper trailing arms and upper control arms,E85 DELIVERED 12/29/15 http://youtube.com/bybcous " no talking only racing on my youtube"

01-15-2017, 04:05 PM	#9
17CamaroZL1 Life's Short, Live Fast! Drives: 2017 Hyper Blue A10 ZL1 Join Date: Nov 2016 Location: London, KY Posts: 2,015	Why would rev match cause it to rev up when trying to pull out? Isn't it supposed to match engine revs with the speed of the vehicle (which would be near zero for his instance), the gear you're in, and the gear you're shifting to? The only time it should rev the engine is when downshifting to a lower gear and it should rev it to the RPM that the new gear would need for the current speed. Not saying it's not a possible cause. Just don't understand why it would be. __________________ Life's Short, Live Fast! https://youtu.be/rTUv2p4T7OA 10.94 at 128 mph, 11.13 at 127mph 870 DA, https://youtu.be/e_X_LcpFp50 11.19 at 127mph 1100 DA, https://youtu.be/OXQiCQdQuH4 11.40 at 125mph 1800 DA https://youtu.be/uWba1qs8M6Q 11.52 at 123mph 3500 DA TZQPHG '17 ZL1 HBM\|A10\|Nav\|PDR\|CFW Hood\|ZL1 Mats 12/26/2016 Ordered! 2/8/2017 Built!! 3/2/2017 Brought Home!!!

01-15-2017, 09:35 AM	#3
Jonru Drives: 2017 zl1 Join Date: Dec 2016 Location: Florida Posts: 36	thanks I will

01-15-2017, 09:55 AM	#4
Lashu74 Lashu74 Drives: 2017 ZL1 Join Date: Dec 2014 Location: PA Posts: 213	I would think that a bad tps would throw a cel. Do you notice it with rev matching on and off? Definitely take it to dealer asap hopefully they can replicate it, you should try to record it if possible so you have proof. Bummer man hope they get it taken care of for you!

01-15-2017, 04:21 PM	#10
Lashu74 Lashu74 Drives: 2017 ZL1 Join Date: Dec 2014 Location: PA Posts: 213	Agreed, I was asking because if it was only doing it when it was on maybe the rev matching was malfunctioning?

01-15-2017, 04:22 PM	#11
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	My guess is active rev match causing the problem. But, ARM is off by default at start up from what I read.

01-16-2017, 12:41 PM	#13
TheGC1 Drives: 2017 ZL1 Nightfall Gray Join Date: May 2013 Location: South Florida Posts: 58 View My Garage	Wow, I thought I was crazy when it happened to me... Wow. I actually had this happen to me at the greatest time a few weeks ago. I had just grabbed my food from the window at a Chik-fil-A drive through, and I pulled forward slightly and then depressed the clutch to slow down stop again... The damn thing revved steadily to 4k-5k or more. I pulled it out of gear and released the clutch and a few other things in that split second it couple seconds. Not sure what finally made it normalize because it was honestly VERY damn stressful. It was a crowded lunch time and they had the employee out directing the loop around the building... So yeah, it was quite the spectacle surrounded by other cars, folks walking around and a handful of employees out there too. Pretty damn embarrassing actually. It happened that once and hasn't happened since, but I hope it doesn't happen again. Seems like a pretty dangerous thing that the car has the potential to revv like that... Imagine the horrors depending on the scenario... a lot of potential for someone to get hurt, the car to get hurt... Damn. I would love to know what the issue is here, and I'm certain that this cannot be replicated in front of the dealer's service department... __________________ Now Driving: 2017 Camaro ZL1 A10 \| Black 2016 Stingray Z51 A8 \| Corvette Racing Yellow Past Rides: 2017 Camaro ZL1 M6 \| Nightfall Gray 2013 Camaro ZL1 M6 #6052\| Summit White

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