My car has some slight vibration around 1500-1800 rpm range. This is quite slight and the car does not have to be in gear and moving to feel it. It can in neutral and when I rev the engine between rpm of 1500 and 1800 I can feel it on the steering wheel and Auto transmision handle. If you keep the rpm set at say 1700 you can feel it perhaps the most and it goes away around 2000rpm. You can feel it while driving to be but its than more mixed with road noise vibration and a little more difficult to distinguish.

Anyone have similar experience. I talked to the guy at Frontier Infiniti and he sat with me in the car and listened to it and said he feels its normal. I guess he wants to be blow me off. He told me experience with other 2003 G35 sedan its normal.

Anyone with with 2003 G35 sedan have similar experience?
Thanks

 

I have the similar symptom. In my case, I felt small vibration in the gas pedal while driving at 40 mph (around 1400-1700 rpm). Now, I put 2000 miles on my car and I am trying to get used to this vibration. However, recently I found another issue. The engine gets really rough at low rpm before it warms up. Do you have this issue (rough engine right after it starts) too? Regarding the gas pedal vibration I reported it to "www.edmund.com" check the Car Discussions/Infiniti/Problems & Solutions. There are several other postings. I moved those here:

> #91 of 1134 Vibration from gas pedal and
> windshield wiper chatter by fsilva Jun 30, 2002
> (8:29 pm)
> I am getting a vibration from the gas pedal when
> going 35-40 mph and accelerate to 45-55 mph.You
> feel the vibration as you increase the rpm. At first
> you do not notice it, but when you find it, it is very
> annoying. I went to the dealer and they also felt it.
> We test drove two other G35 and also found it. They
> have put a call into Infinity and waiting for a reply.
> My only other complaint is the chatter from my
> wipers. Has anybody else had this problems? I will
> keep you posted. I own own a pearl white/black
> int/Bose/Sport/Aero Package and love it!
> ==============================
> #93 of 1134 gas pedal vibration by 68nascar Jul
> 01, 2002 (12:34 pm)
> fsilva, Please let me know if you come up with a fix
> for this vibration. Mine is doing the same thing and
> it is driving me nutz!!!
> =================================
> #94 of 1134 Gas pedal vibration update and wiper
> chatter by fnsilva Jul 01, 2002 (6:09 pm)
> Dealer spoke to Infinity representative who has also
> noticed it. He is awaiting further info on a fix. In the
> meantime, I loosened the two 10 mm bolts holding
> the gas pedal assembly and placed 4 layers of thin
> foam padding and retighten the two bollts. You do
> not have to remove the pedal, just cut two slits to
> slide between the bolts. I purchased the foam at
> Sears; it is used to line the drawers in the tool chest.
> It should help cancel some of the vibration out. I
> would still let your dealer know about the problem;
> the more complaints, the quicker they will try to find
> a fix. I replaced my wipers with better ones from the
> auto store and the chatter is gone.
> ==================================
> #284 of 1134 Test drive issues on 2003.5 G35 by
> gmon Oct 25, 2002 (9:46 pm)
> I am very interested in purchasing a G35 but found
> some issues on 1st test drive earlier this week.
> Drove a 2003.5 G w/leather,premium/wood/winter
> pkgs. The car arrived at dealer ~ 2 weeks ago, had
> 13 miles on odo. Handling seemed ~ as good as
> BMW 530! However, as noted in previous postings
> on this board, I felt a vibration through the gas
> pedal between 30-50 mph a few times during my 12
> mile test drive... rather annoying since I do a lot of
> driving in this range. The dealer said he had not
> been told that before (obviously does not read this
> town hall). I did not get a chance to thoroughly
> exercise the A/C so don't know if it has been fixed.
> Dealer did acknowledge that the clock lighting was
> weak as has been the case for years on other infiniti
> products. I also found the interior materials to be
> inferior and cheap looking compared to the
> competition. Overall, I am still interested in
> purchasing a G35 but will likely wait until next year in
> the hope that Infiniti listens to their customers and
> fixes these and other startup year issues.
> ==================================
> #412 of 1134 Anyone notice this when first starting
> the car by jedmonds Feb 25, 2003 (5:37 pm)
> I have a g35 sedan auto, and i recently notice that
> when i first start the car, and press on the
> accelerator the car moves as usual but for a split
> second it feels like the cars engine engages
> something, where it sounds like the engine is
> reving. Its kind of hard to describe, i can feel the
> vibration in the gas pedal. But this only occurs after
> starting the car, after that i never feel that vibration.
> Anyone have any clues if this is normal???
> ==================================
> #429 of 1134 The Gas Pedal Vibration problem by
> g35_blue Mar 05, 2003 (5:40 pm)
> Hi, All,
> There are few posts about the gas pedal vibration
> problem. How is the result?
> Could someone give me a update? please.
> ===================================
> #430 of 1134 Pedal Vibration by brboot1 Mar 06,
> 2003 (9:23 am)
> Hi,
> I'm interested as well if anyone has gotten
> a fix or explaination from Infiniti on the pedal
> vibration. Seems to happen between 1500 - 1900
> rpms, very smooth throughout the rest of the rpm
> range. It can be very annoying to an otherwise
> awesome car!
> Thanks,
> Brian
> ====================================
> #431 of 1134 My dealer told me there is no
> problem by g35_blue Mar 06, 2003 (9:53 am)
> But the gas pedal do feel strange when the engine
> at 1600-1900 rpm. Also when I press the gas at that
> rpm, the car is not that response as other rpm.
> When I dropped the car to service and told the guy
> the problem. However, when I picked up, they said
> there is no problem. The loaner QX4 was the same
> problem. I do not know, Am I too picky? My Chrysler
> Ciruus is more smooth.
> We may have to complain more and harder, then
> the dealer may file a report to Infiniti to deal with
> this problem.
> Please keep us update on your progress.
> --------------------
> ////G35_CB Sedan/////
> ==================================
> #1101 of 1134 Gas Pedal Vibration ... by kdlee
> Jan 17, 2004 (2:28 am)
> As reported several times before, I also noticed
> there is a gas pedal vibration at low rpm range
> (1200-2200). It has nothing to do with ABS or self-
> test. Does anyone have update on this issue? Or,
> have you felt this?
> =============================
> #1133 of 1134 Gas Pedal Vibration by fng Feb
> 03, 2004 (2:54 pm)
> Hi kdlee,
> I am feeling the same with my 1 & 1/2 month old
> G35x when going about 40 - 60km/h. Above and
> below that speed is fine! Not too happy about it.
> Turn off the A/C helps a little bit. The engine is
> more noise than I expected too.

 

Ok at least I know that I am not alone.
Initially when I posted about this vibration a few said to take it to dealer that got me concerned something is wrong ( ihad bought it used with 20k on it) although the dealer said its normal for what it is worth.

The vibration can be noticed during driving too between the 1400-1700 rpm when you are cruising around 40mph but you can also notice the rough band when in idle when you rev the rpm. Have you also noticed your automatic shifter **** and the steering also can feel this vibration??

What do you mean by rough when cold. Mine is a kind of loud when you first start it and the rom starts around 1800rpm and then goes down slowly. I think it is not really all over the place I will try to notice it next time though. My idle which is around 650rpm is kind of rough though I expect it to be more stable for 6 cyl . The rpm goes up and down a little but not much around +/- 50rpm.

 

Any update on this issue. I got the same intermitent problem in my 06. Did you take it to the dealer?