Smooth Stops... Is it possible?
#12
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My Ride: BMW 545iA Black Sapphire
Model Year: 2005
Engine: 545i
10mph and below :
As you come to a stop, the engine is still holding about 700rpm, to anticipate (if applicable) a slow traffic pace - more braking is needed due to those higher rpm. Below that speed however the engine recognizes a full stop is imminent, drops the rpm to 500rpm...you have to reduce slightly brake force and voila: smooth stop. Takes some practice and obviously less applicable when A/C is on, since engine holds 700rpm most of the time.
Hope it helps...
As you come to a stop, the engine is still holding about 700rpm, to anticipate (if applicable) a slow traffic pace - more braking is needed due to those higher rpm. Below that speed however the engine recognizes a full stop is imminent, drops the rpm to 500rpm...you have to reduce slightly brake force and voila: smooth stop. Takes some practice and obviously less applicable when A/C is on, since engine holds 700rpm most of the time.
Hope it helps...
#13
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My Ride: 2005 545i Orient Blue
I think that's what I'm doing now.. but I guess that's what I'm getting annoyed with. I shouldn't have to do that. I should be able to come to a normal stop. I'm hoping that it can be figured out.
#14
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My Ride: '05 545i
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Yep, that's what I am doing. In "D" at 10mph, you are still in second. As you approach 5mph or less, the car does sense you are coming to a complete stop, drops the rev and shifts into 1st. That the initial stutter. Once is 1st, you let off the brake slightly but the car continues to stutter until you come to a complete stop.
At first, I though the stutter was cause be the shift and making my body stutter thus shaking my brake leg to amplify the stuttering effect. This is not the case. The car stutters if I let off the brake and not accelerate, just letting it idle to speed. For the first few mph, the car stutter without any input from the drive. This is more apparant if you are in a slight incline and can hold the car at a 3mph speed.
Does this sound like your situation Octee?
At first, I though the stutter was cause be the shift and making my body stutter thus shaking my brake leg to amplify the stuttering effect. This is not the case. The car stutters if I let off the brake and not accelerate, just letting it idle to speed. For the first few mph, the car stutter without any input from the drive. This is more apparant if you are in a slight incline and can hold the car at a 3mph speed.
Does this sound like your situation Octee?
#15
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Originally Posted by amadeus00' post='355636' date='Nov 13 2006, 02:26 PM
It's not the transmission slam. That more than a stutter or jolt, that's a down right slam in the rear feeling.
I wonder if it pertains to 2005 models. Anyone with 06 or 07?
I wonder if it pertains to 2005 models. Anyone with 06 or 07?
#16
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My Ride: 2005 545i Orient Blue
Originally Posted by amadeus00' post='355682' date='Nov 13 2006, 04:13 PM
Yep, that's what I am doing. In "D" at 10mph, you are still in second. As you approach 5mph or less, the car does sense you are coming to a complete stop, drops the rev and shifts into 1st. That the initial stutter. Once is 1st, you let off the brake slightly but the car continues to stutter until you come to a complete stop.
At first, I though the stutter was cause be the shift and making my body stutter thus shaking my brake leg to amplify the stuttering effect. This is not the case. The car stutters if I let off the brake and not accelerate, just letting it idle to speed. For the first few mph, the car stutter without any input from the drive. This is more apparant if you are in a slight incline and can hold the car at a 3mph speed.
Does this sound like your situation Octee?
At first, I though the stutter was cause be the shift and making my body stutter thus shaking my brake leg to amplify the stuttering effect. This is not the case. The car stutters if I let off the brake and not accelerate, just letting it idle to speed. For the first few mph, the car stutter without any input from the drive. This is more apparant if you are in a slight incline and can hold the car at a 3mph speed.
Does this sound like your situation Octee?
#17
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Originally Posted by octee' post='355703' date='Nov 13 2006, 09:56 PM
Exactly my situation amadeus00. I've noticed it a lot more often in the morning..
I thought what the OP described was a classical case of transmission slam - which is probably related to auto V8s (and 3l diesels - as the transmission is the same).
@Sergey: Do bear in mind that "Sport" mode is available as a program even with the car in "D". There's 4 auto box shifting programs (XE, E, S, XS from less to more aggressive) and the box chooses one as you go depending on various parameters (accelerator position, speed of car, pitch and yaw movements, ...). Pushing the lever to DS only selects the 'XS' program permanently. If others drive less gently than you do, they may stop with the car in S or XS mode.
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Originally Posted by andy545' post='355676' date='Nov 13 2006, 03:41 PM
10mph and below :
As you come to a stop, the engine is still holding about 700rpm, to anticipate (if applicable) a slow traffic pace - more braking is needed due to those higher rpm. Below that speed however the engine recognizes a full stop is imminent, drops the rpm to 500rpm
As you come to a stop, the engine is still holding about 700rpm, to anticipate (if applicable) a slow traffic pace - more braking is needed due to those higher rpm. Below that speed however the engine recognizes a full stop is imminent, drops the rpm to 500rpm
#19
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My Ride: 2006 525i Silver Gray/Gray Dakota Leather | Steptronic | Cold Weather | Xenon | Premium Package
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Originally Posted by octee' post='355677' date='Nov 13 2006, 12:44 PM
I think that's what I'm doing now.. but I guess that's what I'm getting annoyed with. I shouldn't have to do that. I should be able to come to a normal stop. I'm hoping that it can be figured out.
#20
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My Ride: 2005 545i Orient Blue
I did notice that by downshifting into the M1 as I was braking it eased the stuttering significantly. I'll have to try it again in the morning and see if it's consistent. Again, I think these are just work arounds and not true solutions to our problems. But I'll take them for now.