Hitting Rev Limiter way too soon

BigumZL1 · 06-17-2019, 04:10 PM

Hey — been noticing a problem when driving my M6 ZL1 in a “spirited fashion”. If I’m at full throttle the rev limiter kicks in well before redline (40 mph in first gear for example), but when slowly revving up I can take the motor all the way to redline (60 mph in first). My car has a Roto-Fab and Tony Mamo ported throttle body and is otherwise stock. No tune.

Any ideas on what could be causing this?

Many thanks for your help.

sujohn · 06-17-2019, 04:20 PM

There was recently another thread about this - long story short, your left foot may be resting on the clutch, triggering the no-lift shift rev limiter.

Apparently, the clutch switch is very sensitive in these cars.

BigumZL1 · 06-17-2019, 04:22 PM

Quote:

Originally Posted by sujohn

There was recently another thread about this - long story short, your left foot may be resting on the clutch, triggering the no-lift shift rev limiter.

Apparently, the clutch switch is very sensitive in these cars.

I found that thread and tried that (removed my foot from the clutch completely). I still bang into the rev limiter. I appreciate the quick response.

Exorcised · 06-17-2019, 04:55 PM

Full throttle in first usually will spin the tires and hit the rev limiter quite easily. You sure that is not the case? You will not be doing 60mph, but your tires might be...

BigumZL1 · 06-17-2019, 05:23 PM

Quote:

Originally Posted by Exorcised

Full throttle in first usually will spin the tires and hit the rev limiter quite easily. You sure that is not the case? You will not be doing 60mph, but your tires might be...

I wish that were the case! Even with perfect traction it happens.

URBAN LEGEND · 06-17-2019, 05:34 PM

Should have gotten the A10. <— Just kidding.

Cleancoupe · 06-17-2019, 08:43 PM

I’m pretty sure I’ve had this happen to me before as well. I tried to get it to do it again the other day, but it didn’t happen. I’m going to play around with it some more & see if it happens again. It happened in either 2nd or 3rd gear for me and it was not a cause from lost traction.

BigumZL1 · 06-17-2019, 09:56 PM

Quote:

Originally Posted by Cleancoupe

I’m pretty sure I’ve had this happen to me before as well. I tried to get it to do it again the other day, but it didn’t happen. I’m going to play around with it some more & see if it happens again. It happened in either 2nd or 3rd gear for me and it was not a cause from lost traction.

I’ve had it happen in both 2nd and 3rd gears as well. Appreciate the response.

Gunkk · 06-18-2019, 10:22 AM

Quote:

Originally Posted by sujohn

There was recently another thread about this - long story short, your left foot may be resting on the clutch, triggering the no-lift shift rev limiter.

Apparently, the clutch switch is very sensitive in these cars.

This.

Fraxum · 06-18-2019, 12:01 PM

switch adjustment?

MadFrog · 06-18-2019, 12:08 PM

was the car fully warmed up? I've had this happen on my 1LE when I didn't pay attention and was trying to accelerate hard before the car was fully warmed up.

BigumZL1 · 06-18-2019, 03:47 PM

Quote:

Originally Posted by Gunkk

This.

I’m fairly certain it isn’t this. I have done pulls with my left foot nowhere near the clutch peddle and it still bangs up early against the rev limiter.

BigumZL1 · 06-18-2019, 03:48 PM

Quote:

Originally Posted by MadFrog

was the car fully warmed up? I've had this happen on my 1LE when I didn't pay attention and was trying to accelerate hard before the car was fully warmed up.

Yep... oil temps over 200. 😔

BigumZL1 · 06-19-2019, 02:38 PM

Quote:

Originally Posted by Cleancoupe

I’m pretty sure I’ve had this happen to me before as well. I tried to get it to do it again the other day, but it didn’t happen. I’m going to play around with it some more & see if it happens again. It happened in either 2nd or 3rd gear for me and it was not a cause from lost traction.

Any luck replicating the problem?

06-17-2019, 04:10 PM	#1
BigumZL1 Drives: 2017 ZL1 Summit White Join Date: Mar 2019 Location: MD - DC area Posts: 51	Hitting Rev Limiter way too soon Hey — been noticing a problem when driving my M6 ZL1 in a “spirited fashion”. If I’m at full throttle the rev limiter kicks in well before redline (40 mph in first gear for example), but when slowly revving up I can take the motor all the way to redline (60 mph in first). My car has a Roto-Fab and Tony Mamo ported throttle body and is otherwise stock. No tune. Any ideas on what could be causing this? Many thanks for your help.

06-17-2019, 05:34 PM	#6
URBAN LEGEND Drives: 20 X3M CP & 19 ZL1 1LE A10 Join Date: Jun 2013 Location: Brenham, TX Posts: 3,517	Should have gotten the A10. <— Just kidding. __________________ 🔺22 RS E TRON GT 🔺21 Model S Plaid

06-18-2019, 12:01 PM	#10
Fraxum Drives: a M6 LT1 ordered From Becky!!! Join Date: Jan 2010 Location: NJ Posts: 7,520	switch adjustment? __________________ "Democracy Dies in Darkness" My LT1 Keeper ..... ..... My Car Blog CarPlayList, a free App to build USB and Android Music drives.

06-17-2019, 04:20 PM	#2
sujohn Drives: '18 ZL1 1LE Join Date: Mar 2019 Location: Houston Posts: 26	There was recently another thread about this - long story short, your left foot may be resting on the clutch, triggering the no-lift shift rev limiter. Apparently, the clutch switch is very sensitive in these cars.

06-17-2019, 04:55 PM	#4
Exorcised Drives: 2019 black ZL1 1LE Join Date: Nov 2018 Location: Florida Posts: 20	Full throttle in first usually will spin the tires and hit the rev limiter quite easily. You sure that is not the case? You will not be doing 60mph, but your tires might be...

06-17-2019, 08:43 PM	#7
Cleancoupe Drives: 18 ZL1 1LE Join Date: Apr 2013 Location: Florida Posts: 703	I’m pretty sure I’ve had this happen to me before as well. I tried to get it to do it again the other day, but it didn’t happen. I’m going to play around with it some more & see if it happens again. It happened in either 2nd or 3rd gear for me and it was not a cause from lost traction.

06-18-2019, 12:08 PM	#11
MadFrog Drives: 2018 SS 1LE Join Date: Nov 2017 Location: Haymarket Posts: 9	was the car fully warmed up? I've had this happen on my 1LE when I didn't pay attention and was trying to accelerate hard before the car was fully warmed up.

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