RCF Violent Shaking
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Driver School Candidate
Joined: Apr 2018
Posts: 19
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From: ON
RCF Violent Shaking
Hey guys,
Just wanted to double check my understanding of the car. My 2015 RCF frequently shakes violently in first gear when I'm near/on the redline. My guess is the fuel cut off is being activated but the jerking motion is pretty violent and nothing like what I'm used to for the rev-limiter kicking in.
This only happens in Sports+ mode; happens in both manual and automatic transmission mode (sometimes the first gear gets stuck in automatic mode) but is definitely more prevalent in manual mode when I hang in first gear.
And by violent, I mean near whiplash mode.
Thanks.
Just wanted to double check my understanding of the car. My 2015 RCF frequently shakes violently in first gear when I'm near/on the redline. My guess is the fuel cut off is being activated but the jerking motion is pretty violent and nothing like what I'm used to for the rev-limiter kicking in.
This only happens in Sports+ mode; happens in both manual and automatic transmission mode (sometimes the first gear gets stuck in automatic mode) but is definitely more prevalent in manual mode when I hang in first gear.
And by violent, I mean near whiplash mode.
Thanks.
Thread Starter
Driver School Candidate
Joined: Apr 2018
Posts: 19
Likes: 1
From: ON
Nope. The temperature's mid-way when it occurs. I don't throttle too hard when it's cold.
Lexus Champion
Joined: Oct 2005
Posts: 10,376
Likes: 2,779
From: Calgary, AB
Have you gone a bit past 7300 rpm (~ 7450 rpm or so)? Then it is the fuel cut-off and yes, it is pretty violent as in the car will stutter quite hard. It is normal. Toyota/Lexus rev limiters kick in pretty hard compared to the "soft" limiter I felt while driving the E90 M3 where it simply gradually cuts engine power smoothly.
Thread Starter
Driver School Candidate
Joined: Apr 2018
Posts: 19
Likes: 1
From: ON
Have you gone a bit past 7300 rpm (~ 7450 rpm or so)? Then it is the fuel cut-off and yes, it is pretty violent as in the car will stutter quite hard. It is normal. Toyota/Lexus rev limiters kick in pretty hard compared to the "soft" limiter I felt while driving the E90 M3 where it simply gradually cuts engine power smoothly.
But the jerks, my god. Feels like half the teeth on the first gear went missing.
Lexus Champion
Joined: Oct 2005
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From: Calgary, AB
Okay, great. Yes, I'm used to the E92 M3 cut-off being a descending power cut so I was surprised by the drastic jerking motion. Just wanted to make sure my tranny or torque converters weren't dysfunctional.
But the jerks, my god. Feels like half the teeth on the first gear went missing.
But the jerks, my god. Feels like half the teeth on the first gear went missing.
I was also surprised when I test drove the E90 M3 sedan as to how it was gradually cutting power smoothly. It was actually my car of choice (2013 E90 M3 sedan) until I drove the RCF and chose to go with the RCF. My 2ZZ-GE car also hits the rev limiter hard at 8350 rpm just like my RCF does so I was used to it.
Thread Starter
Driver School Candidate
Joined: Apr 2018
Posts: 19
Likes: 1
From: ON
Hahah...coincidence I used an example of what you can directly relate to.
I was also surprised when I test drove the E90 M3 sedan as to how it was gradually cutting power smoothly. It was actually my car of choice (2013 E90 M3 sedan) until I drove the RCF and chose to go with the RCF. My 2ZZ-GE car also hits the rev limiter hard at 8350 rpm just like my RCF does so I was used to it.
I was also surprised when I test drove the E90 M3 sedan as to how it was gradually cutting power smoothly. It was actually my car of choice (2013 E90 M3 sedan) until I drove the RCF and chose to go with the RCF. My 2ZZ-GE car also hits the rev limiter hard at 8350 rpm just like my RCF does so I was used to it.
Might have to test drive some dealer RCFs to confirm the rev-limiter jerking is as harsh as the one I'm experiencing.
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Lexus Champion
Joined: Oct 2005
Posts: 10,376
Likes: 2,779
From: Calgary, AB
Haha, exactly what I was thinking. Had the privilege of driving it for 4 years; eventually traded it in for the RCF because I didn't want to deal with the imminent transmission problems that lied ahead.
Might have to test drive some dealer RCFs to confirm the rev-limiter jerking is as harsh as the one I'm experiencing.
Might have to test drive some dealer RCFs to confirm the rev-limiter jerking is as harsh as the one I'm experiencing.
Handling wise, I felt the RCF with TVD in 'track' mode was more tail happy than the E90 M3 and wanted to kick the tail out coming out of a corner in 1st or 2nd gear. At high speed, the TVD made it rotate more aggressively.
Ultimately, I was very happy that RCF had bullet proof reliability and quality, but does not give up on driving excitement compared to the M. That made it worth spending $15,000 more compared to a low mileage 2013 E90 M3 sedan I was looking at.
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Thread Starter
Driver School Candidate
Joined: Apr 2018
Posts: 19
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From: ON
Driver
Joined: Oct 2015
Posts: 166
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From: California
In one of the vids I saw online, they were talking how the RCF had some kind of unique rev limiter feature, that not to many cars have. He was hitting it really hard too and enjoying it. Is that sputter what you are referring too?
Thread Starter
Driver School Candidate
Joined: Apr 2018
Posts: 19
Likes: 1
From: ON
If it's violent, then possibly . Would you please find my that video? Thanks!
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