Rough Idle

shahano · 01-03-2014, 12:34 AM

I turned the car on last night after dinner, and the idle was very rough, varying from about 500 rpm to 900 rpm. The car was already at operating temperatures and it disappeared after around 5 minutes. I am worried if there is something wrong. All the other threads mention some kind of O2 failure. What do you think it is? No warning lights or anything as off now. Can I still drive it?

shahano · 01-03-2014, 04:32 AM

anyone?

chudak18 · 01-03-2014, 10:10 AM

Drive it. If there's no check engine light, you are OK. The codes should still be in memory even though the car isn't acting up any more so next time you get a chance have your mechanic/dealer scan them and give you an idea of what happened. I heard of issues with drive train failure lights in the dash when fuel was low.

greentrbo95gst · 01-03-2014, 11:06 AM

Just drive the car and don't worry.

alexey21 · 01-03-2014, 01:16 PM

Drive it.

If anything actually bad happens I am sure the car will through a code.

savela · 01-03-2014, 03:18 PM

Recent oil change? If my car sits for a weekend, I'll feel a rough idle for a few seconds, certainly not minutes and def. not when at temp. What kind of oil do you use???

shahano · 01-05-2014, 06:58 AM

its been driving fine all weekend, no warnings, still took an appointment on Tuesday to make sure that its nothing.. God I love this car.

01-03-2014, 12:34 AM	#1
shahano Lieutenant Colonel 231 Rep 1,576 Posts Drives: 21' M2C 6spd ,11' 1M, 88' M3 Join Date: Oct 2013 Location: London, UK iTrader: (0)	Rough Idle I turned the car on last night after dinner, and the idle was very rough, varying from about 500 rpm to 900 rpm. The car was already at operating temperatures and it disappeared after around 5 minutes. I am worried if there is something wrong. All the other threads mention some kind of O2 failure. What do you think it is? No warning lights or anything as off now. Can I still drive it?
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01-03-2014, 04:32 AM	#2
shahano Lieutenant Colonel 231 Rep 1,576 Posts Drives: 21' M2C 6spd ,11' 1M, 88' M3 Join Date: Oct 2013 Location: London, UK iTrader: (0)	anyone?
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01-03-2014, 10:10 AM	#3
chudak18 Captain 68 Rep 991 Posts Drives: E92 335, W463 G55 Join Date: Jul 2010 Location: Vineland, NJ iTrader: (3) Garage List 2012 Porsche/Caynne S [0.00] 2013 BMW M5 [0.00]	Drive it. If there's no check engine light, you are OK. The codes should still be in memory even though the car isn't acting up any more so next time you get a chance have your mechanic/dealer scan them and give you an idea of what happened. I heard of issues with drive train failure lights in the dash when fuel was low.
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01-03-2014, 11:06 AM	#4
greentrbo95gst Brigadier General 1231 Rep 4,106 Posts Drives: 21 M5 Comp Join Date: Jan 2011 Location: Orange County iTrader: (6)	Just drive the car and don't worry. __________________ Current: 21 M5 Comp, 17 X5M, 06 M3, 14 Ferrari FF, Tesla Model S Performance.
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01-03-2014, 01:16 PM	#5
alexey21 Lieutenant 60 Rep 422 Posts Drives: Turbo Join Date: Apr 2012 Location: Philly iTrader: (0)	Drive it. If anything actually bad happens I am sure the car will through a code.
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01-03-2014, 03:18 PM	#6
savela First Lieutenant 26 Rep 365 Posts Drives: 2015 X5M Join Date: Aug 2010 Location: TX iTrader: (0)	Recent oil change? If my car sits for a weekend, I'll feel a rough idle for a few seconds, certainly not minutes and def. not when at temp. What kind of oil do you use??? __________________ 2015 ///X5M 2014 ///M6 (traded) 2014 ///M5 (traded) 2011 550i (traded)
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01-05-2014, 06:58 AM	#7
shahano Lieutenant Colonel 231 Rep 1,576 Posts Drives: 21' M2C 6spd ,11' 1M, 88' M3 Join Date: Oct 2013 Location: London, UK iTrader: (0)	its been driving fine all weekend, no warnings, still took an appointment on Tuesday to make sure that its nothing.. God I love this car.
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