strange issue with rpm's

fastauto · 09-15-2011, 04:32 PM

on my way back to work (not beating on the car) i pulled up to a traffic light. my foot was not on the accelerator however I heard the engine working. I looked down and the rpms were a bit high. After hovering a little bit over 1,1000 rpms, they would then jump up to +/-1,600 and then back down around 1k. Two seconds later it would jump back up and do the same exact thing again. It did this for a good two minutes before the light turned green and I took off. Strange. Any ideas as to what would cause this?

James T. Kirk · 09-15-2011, 04:45 PM

Sounds like you need to have it serviced.

Fundahl · 09-15-2011, 04:47 PM

Was it still cold and/or did you change fuel types? (Octane)

ZCP M3 · 09-15-2011, 05:50 PM

Probably a bad tank of gas.

fastauto · 09-15-2011, 06:04 PM

Quote:

Originally Posted by Fundahl

Was it still cold and/or did you change fuel types? (Octane)

I actually did just fill up before this went down however the octane was the same as before (93)

fastauto · 09-15-2011, 06:04 PM

Quote:

Originally Posted by ZCP M3

Probably a bad tank of gas.

I think/hope you are right.

Dee Pee · 09-15-2011, 06:29 PM

Mine hovers at 1200 or so at start then settles down to 800 or so after a few moments. I'm at 600 miles and have burned nothing but premium ethanol free gas since burning off the first tank that the dealer put in.

fastauto · 09-15-2011, 09:48 PM

Quote:

Originally Posted by Dee Pee

Mine hovers at 1200 or so at start then settles down to 800 or so after a few moments. I'm at 600 miles and have burned nothing but premium ethanol free gas since burning off the first tank that the dealer put in.

Yeah, at start that's normal. What u posted about earlier is far from. I actually drove the car before and did not have any issues. I'm going to chalk this one up to bad gas. FYI I have 4500 miles on my car.

09-15-2011, 04:32 PM	#1
fastauto Captain 26 Rep 672 Posts Drives: AW 1M Coupe Join Date: Dec 2009 Location: Long Island, NY iTrader: (0)	strange issue with rpm's on my way back to work (not beating on the car) i pulled up to a traffic light. my foot was not on the accelerator however I heard the engine working. I looked down and the rpms were a bit high. After hovering a little bit over 1,1000 rpms, they would then jump up to +/-1,600 and then back down around 1k. Two seconds later it would jump back up and do the same exact thing again. It did this for a good two minutes before the light turned green and I took off. Strange. Any ideas as to what would cause this?
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09-15-2011, 04:45 PM	#2
James T. Kirk Captain of the Enterprise 101 Rep 1,424 Posts Drives: 2011 1 Series M Coupe Join Date: Nov 2010 Location: Alpha Quadrant, Sector 001 iTrader: (0)	Sounds like you need to have it serviced. __________________ 2011 1 Series M Coupe VO M3 vs 1M Comparo Review 2011 M3 E90 DCT ZCP (sold) * 2010 335i Sedan (sold) 2005 M3 Convertible (sold) * 2003 325i Sedan (sold)
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09-15-2011, 04:47 PM	#3
Fundahl Captain 8 Rep 704 Posts Drives: VO 1M, 300zx TT Join Date: Mar 2011 Location: Corpus Christi, Texas iTrader: (0)	Was it still cold and/or did you change fuel types? (Octane)
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09-15-2011, 05:50 PM	#4
ZCP M3 First Lieutenant 19 Rep 388 Posts Drives: 2011 VO 1M Coupe #759 Join Date: Jul 2011 Location: St. Louis, MO iTrader: (0)	Probably a bad tank of gas.
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09-15-2011, 06:29 PM	#7
Dee Pee Captain 176 Rep 795 Posts Drives: '11 AW 1M, ‘24 718 GTS Join Date: Jun 2011 Location: Portland, OR iTrader: (0)	Mine hovers at 1200 or so at start then settles down to 800 or so after a few moments. I'm at 600 miles and have burned nothing but premium ethanol free gas since burning off the first tank that the dealer put in.
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