RPM's are dropping!!! HELP

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Old 02-10-2009 | 08:02 PM
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exclusivedq's Avatar
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RPM's are dropping!!! HELP

so i noticed while im driving, around 3500 rpms, if i decided to accelerate, the RPMS fluctuate up and down....this occurs in most gears except 1 n 2nd....i am not sure what exactly is causing my RPMs to act crazy.....HELP
Old 02-10-2009 | 08:56 PM
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ssmtl2nv's Avatar
2009 g37s 6mt
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Check lugs and coils, mine did the same until i swapped out all the coils and put denso sparks.... I believe its starting to misfire, cel will follw soon.
Old 02-10-2009 | 09:40 PM
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thanks for the info....i just came back from another drive and it was doing it again on 3rd gear @ 2300 rpm...i took a video as i was on the highway, imma try and post it up...
Old 02-13-2009 | 08:11 AM
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Funny I have the same issue. The rpm go up and then drop about 200rpm then it goes up again, it's like car looses power for a second or two. I thought it's slipping clutch but I did the test the dealer told me to do and the car seems fine.

test:
get car in third gear, press clutch, get engine to 5000rpm and release clutch. if the car goes to 2000-25000rpm and takes off clutch is fine , but if it raves the rpm and no power then the clutch is done. Let me know on the video.
Old 03-14-2009 | 09:16 PM
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hey thanks for the info, i just check it again and its doing it worse than before, im uploading the video now then posting it on youtube....imma do try your test, what was the outcome of your situation??
Old 03-14-2009 | 09:31 PM
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http://www.youtube.com/watch?v=6mKs6hVB8aE

hey this is the link for the video i took, imma take another video bc its getting worse...
Old 03-15-2009 | 09:45 AM
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Well did you change your spark plugs like recommended?
Old 03-15-2009 | 10:00 PM
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no havent had a chance to change the spark plugs, will do tomorrow after work!
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