Auto throttle blip when going into reverse gear?
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2017 C63s converitble
Auto throttle blip when going into reverse gear?
I've only had the car for 3 days so I'm still getting used to it's quirks, but I've noticed the last 2 times on very cold starts, when I put it into reverse gear (with foot firmly on the brake) it will auto blip the throttle a little. Car doesn't move, but it's a little weird. I'll also mention that I wait for the revs to drop to idle before putting it into gear
Anyone else experience this? Normal?
Anyone else experience this? Normal?
Out Of Control!!
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2019 C63CS
To be honest, I don't particularly recall in what situations it blips the throttle, but it definitely does at times. It all makes sense once you understand that this transmission doesn't have a torque converter and instead it has a wet clutch, so the throttle blips in various situations before clutch engagement. Car won't move until the clutch actually starts engaging. It's very much like driving a manual transmission and you blip the throttle to get the rpm in the right spot for clutch engagement. In this case it's the computer doing it for you.
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2017 C63s converitble
That makes sense. I'm still trying to figure out the quirks of the car / transmission....what's normal behavior and what's not.
I'm understanding that it's also normal to feel like it's the trans is slipping when it's cold
I'm understanding that it's also normal to feel like it's the trans is slipping when it's cold
Out Of Control!!
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2019 C63CS
Originally Posted by carzaddict
That makes sense. I'm still trying to figure out the quirks of the car / transmission....what's normal behavior and what's not.
I'm understanding that it's also normal to feel like it's the trans is slipping when it's cold
I'm understanding that it's also normal to feel like it's the trans is slipping when it's cold
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2017 C63s converitble
mine is a 2017 with the 7 speed. has 28k miles...car was PPI'ed, no flags raised about transmission or the way it drives (im assuming the tech drove it)
the garage temp was mid 40's...car hadnt been driven for 24 hours....it wasnt slipping bad, but yes it was in comfort. i need to find time to conduct a test in comfort vs sport.....its totally possible that it falls within the tolerance of allowed slippage in cold comfort (1500-2000k rpms)
the garage temp was mid 40's...car hadnt been driven for 24 hours....it wasnt slipping bad, but yes it was in comfort. i need to find time to conduct a test in comfort vs sport.....its totally possible that it falls within the tolerance of allowed slippage in cold comfort (1500-2000k rpms)
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2019 AMG GT R
i had a 2017 with 100k kms but slippage was not a problem. Temps here get to -25 C and on those days it would just take a bit more gas to get going and shifts would be rough until it warmed up but that would be normal. Never experienced any slipping though.
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2017 C63s converitble
thank you, perhaps i was using incorrect terms, it takes a bit more gas and shifts are rough. maybe its not slippage. I also dont have much experience driving manual to have experienced what true slippage is
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Out Of Control!!
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2019 C63CS
To be clear, there is always slippage in a clutch from a stop. The input and output side slip until they are both spinning at the same speed and the clutch is fully engaged. Undesired slippage would be if at any point you increase throttle input and hear the engine rpm increase without a corresponding increase in vehicle speed.
Having to give more throttle and things being a bit sluggish and jerky when everything is very cold isn't unusual. The fluid has to warm up and circulate and the pressure has to build up. At first the fluid may not flow just right so things may be a bit delayed and lazy until everything is warmed up.
Having to give more throttle and things being a bit sluggish and jerky when everything is very cold isn't unusual. The fluid has to warm up and circulate and the pressure has to build up. At first the fluid may not flow just right so things may be a bit delayed and lazy until everything is warmed up.
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2017 C63s converitble
To be clear, there is always slippage in a clutch from a stop. The input and output side slip until they are both spinning at the same speed and the clutch is fully engaged. Undesired slippage would be if at any point you increase throttle input and hear the engine rpm increase without a corresponding increase in vehicle speed.
Having to give more throttle and things being a bit sluggish and jerky when everything is very cold isn't unusual. The fluid has to warm up and circulate and the pressure has to build up. At first the fluid may not flow just right so things may be a bit delayed and lazy until everything is warmed up.
Having to give more throttle and things being a bit sluggish and jerky when everything is very cold isn't unusual. The fluid has to warm up and circulate and the pressure has to build up. At first the fluid may not flow just right so things may be a bit delayed and lazy until everything is warmed up.
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I've only had the car for 3 days so I'm still getting used to it's quirks, but I've noticed the last 2 times on very cold starts, when I put it into reverse gear (with foot firmly on the brake) it will auto blip the throttle a little. Car doesn't move, but it's a little weird. I'll also mention that I wait for the revs to drop to idle before putting it into gear
Anyone else experience this? Normal?
Anyone else experience this? Normal?
also about the clutch slipping, it you mean from a stop it takes more throttle to move (the rpm raises but the car only moves after like 2k) it also is normal when cold. What I do is put the car in both drive and reverse first then I let don't touch the throttle and let it slowly start moving by itself. It seems to fix the issues or at least improve it, but from what ive seen it shouldnt be a problem either way
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2017 C63s converitble
thanks for the input. im realizing as well that this seems normal. i wasnt using the correct terminology, its not slipping, but rather taking more revs to engage....but thats just at cold, once its warmed up, its back to normal
the auto blipping into reverse is a little weird. I end up pressing super hard in the brake just incase it lurches for whatever reason
the auto blipping into reverse is a little weird. I end up pressing super hard in the brake just incase it lurches for whatever reason
