Surging when idling...auto start stop issue??

mjposner · 11-12-2015, 07:13 AM

So my auto start stop has never really worked. I complained last service visit and they said they "fixed." Worked once and then never worked again. I prefer it off, but to do so you have the bright orange off light. so I turned it "on" to turn light off. Lately I have been getting odd surging at red lights. Could this be the system being confused turning off and on quickly? Or just coincidence?

vsix · 11-12-2015, 07:21 AM

Could be, as cluster light on indicates OFF and vice versa.
I could also imagine, that "playing" with it alot could most likely damage something but speaking of surging. What do you mean exactly by surging?

asbjorjo · 11-12-2015, 07:34 AM

Wouldn't large variations in RPM on idle be more likely to be an issue with ICV than auto start stop?

Flying Ace · 11-12-2015, 01:33 PM

descibe more about this surging...do you have your foot on the brake when this happens?

mjposner · 11-12-2015, 07:32 PM

"do you have your foot on the brake when this happens?" Yes. Sitting at light. First time I thought I hit gas pedal, went over 1,000 rpm. Put the stop start off (light on) and no surging yet.

11-12-2015, 07:13 AM	#1
mjposner Brigadier General 901 Rep 3,071 Posts Drives: 2020 Z4 40i Join Date: Mar 2011 Location: Southwest Florida iTrader: (3)	Surging when idling...auto start stop issue?? So my auto start stop has never really worked. I complained last service visit and they said they "fixed." Worked once and then never worked again. I prefer it off, but to do so you have the bright orange off light. so I turned it "on" to turn light off. Lately I have been getting odd surging at red lights. Could this be the system being confused turning off and on quickly? Or just coincidence? __________________ Previous BMW: 16 M4, 13 M6; 14 M235i, 12 BMW M3; 11 BMW M3; 08 BMW M3; 08 BMW Z4M; 04 X3; 02 M3 Convertible; 02 M3; 00 M Roadster; 94 325 convertible; 92 325i Convertible; and 85 635csi My Car Photo Blog: http://carfisheye.blogspot.com/
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11-12-2015, 07:21 AM	#2
vsix Lieutenant Colonel 602 Rep 1,611 Posts Drives: M3 E92 sold, M4 F82 Join Date: Nov 2012 Location: ATL iTrader: (0)	Could be, as cluster light on indicates OFF and vice versa. I could also imagine, that "playing" with it alot could most likely damage something but speaking of surging. What do you mean exactly by surging?
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11-12-2015, 07:34 AM	#3
asbjorjo Private 4 Rep 54 Posts Drives: 2003 E46 M3 Join Date: Dec 2014 Location: Katy, TX iTrader: (1) Garage List 2013 X5 xDrive35d [0.00] 2003 E46 M3 [0.00]	Wouldn't large variations in RPM on idle be more likely to be an issue with ICV than auto start stop? __________________ 2003 E46 M3 Carbon Black
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11-12-2015, 01:33 PM	#4
Flying Ace Lieutenant General 4987 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	descibe more about this surging...do you have your foot on the brake when this happens? __________________ 22 Phytonic/Coffee X5 45e (CoVID-free) 08 Speed Yellow 911 GT3 Sharkwerks 12 AW/Cinnamon X5d Sports Pkg (retired) 14 AW/Beige M6GC ZCP, MPE, V2 steering wheel, vorsteiner (retired) 08 SSII/Black E90 M3 (retired)
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11-12-2015, 07:32 PM	#5
mjposner Brigadier General 901 Rep 3,071 Posts Drives: 2020 Z4 40i Join Date: Mar 2011 Location: Southwest Florida iTrader: (3)	"do you have your foot on the brake when this happens?" Yes. Sitting at light. First time I thought I hit gas pedal, went over 1,000 rpm. Put the stop start off (light on) and no surging yet. __________________ Previous BMW: 16 M4, 13 M6; 14 M235i, 12 BMW M3; 11 BMW M3; 08 BMW M3; 08 BMW Z4M; 04 X3; 02 M3 Convertible; 02 M3; 00 M Roadster; 94 325 convertible; 92 325i Convertible; and 85 635csi My Car Photo Blog: http://carfisheye.blogspot.com/
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