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Engine feels rough when revving in neutral Engine feels rough when revving in neutral
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Old 3rd July 2012, 16:16   #1
shingles314
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Engine feels rough when revving in neutral
The car is a 2008 with 40,000 miles. The other day, I noticed that the engine seems rough if I would lightly rev it in neutral. I didn't go crazy, never revved beyond say 2500-3000RPM. But when I do rev it, it seems to be rough. I can feel the coarseness through the peddels, especially the clutch. The car otherwise would drive fine. Any thoughts on if something is up? No lights, no warning, nothing else. Like I mentioned, it seems to drive fine otherwise.

Thanks in advance.
-S
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Old 3rd July 2012, 16:21   #2
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Ignition Coil!
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Old 4th July 2012, 07:54   #3
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If it rattles, then its your flywheel.

If not, it can be anything like coils, plugs, MAFs, O2s. Get the car scanned for errors.

The first thing I would do is clean the MAFs with a CRC MAF cleaner. Your spark plugs are almost done as well, so I would also look into replacing them.
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Old 4th July 2012, 19:31   #4
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Quote:
Originally Posted by shingles314 View Post
The car is a 2008 with 40,000 miles. The other day, I noticed that the engine seems rough if I would lightly rev it in neutral. I didn't go crazy, never revved beyond say 2500-3000RPM. But when I do rev it, it seems to be rough. I can feel the coarseness through the peddels, especially the clutch. The car otherwise would drive fine. Any thoughts on if something is up? No lights, no warning, nothing else. Like I mentioned, it seems to drive fine otherwise.

Thanks in advance.
-S

SMG or 6sp ?
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Old 4th July 2012, 23:15   #5
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Thanks for the feedback so far.

Car's a 6spd.
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Old 5th July 2012, 00:05   #6
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That is what i thought.. I am yet to see 6sp that does not have that rattle when revving in neutral 2000-3000RPM.
Save your money trying to change out coils, plugs, MAFs, O2s, etc for more important things in life like MODS
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Old 5th July 2012, 02:39   #7
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Maybe engine or transmission mounts? Assuming there is no engine malfunction light
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Old 26th December 2012, 15:31   #8
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Ever figure this out? I was revving the M5 up, 2009 with 31k on the clock during a coldstart and it felt really coarse!
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Old 26th December 2012, 15:40   #9
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No, never did. But just this past weekend, the car developed a check engine with "increased emissions" message. I am also noticing some noises that I've not heard before. So I am going to take it in this week and have it checked out.

Stay tuned.

-S
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Old 26th December 2012, 21:25   #10
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Your car has the shingles!
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