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Old 10-05-2009, 02:55 PM   #1 (permalink)
The_Jazz
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Location: Chicago
Help with a 2002 Infiniti G20

I drive a 2002 G20, and I just got the oil changed on Sunday. I'm having a problem that I hope the resident gearheads can lend some help.

Immediately after the oil change, I noticed that there was a small "bump" that I felt when the car (it's an automatic) went from 1st to 2nd and from 2nd to 3rd. The bump is also audible and is softer and less noticeable going from 2nd to 3rd.

Today I also noticed that the engine is running at a different pitch (the engine sounds slightly rougher) in all gears. I know that the fluid levels were fine (that's what it says on the receipt), but it seems like an odd coincidence. Any thoughts on what this could be and if it's a major problem or not?
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