How long has your car been doing this? I can rev mine in park and it doesn't do it. When accelerating it will make the noise. I should have been more clear in my post.A33 wrote:I have a similar noise with my I30, it only does it under load though(transmission in gear and driving). With mine I can stick it in neutral while driving and rev it with no noise but when I put it back in drive it still does it sometimes. Also when parked it will not do it either, after further inspection one thing I found was that the heat shield on the cat. converter under the car was loose, once fixing that it helped with the noise a lot.
You could just have something loose under the car, it could be pinging from type of fuel being used, or it may have another issue like a loose or worn out motor mount. Either way if you don't feel comfortable checking it yourself and it worries you then drop it off at the shop and let them figure it out.
At ~90K I'd recommend a full engine coolant/transmission fluid flush, especially if you don't have any records of it having been done previously (should be done every 30K). As far as the rattle under acceleration I would look at all the heat shields. If one of them is loose it can vibrate under acceleration and cause a rattling noise like you describe. This is a pretty likely culprit if the noise only happens at certain RPM levels.ZachB wrote:Hello;
I have a 2002 I35. It has 91,000 miles and I'm getting ready to do some maintenance to it. I plan to have the plugs changed along with the plug wires. Is this something I could do myself or does the manifold really need to be removed completely? If it's something that I take to the dealer, any suggestions on appropriate cost so I don't get ripped off?
Also, are there any other suggestions as to other maintenance that should be done at the same time?
One concern I have is that sometimes (not always) I hear a slight "rattle" as I accelerate. It's not consistent, not loud, just kind of a ping / rattle as the engine revs which stops after a few seconds. I don't want this to get worse - any ideas on what could cause this? Could this be a timing issue?
Thanks in advance!
Anyone ever find out what the rattle noise was, im a little scared bc i just bought the car and its been 3 weeks and im now getting a rattle noise.ZachB wrote:How long has your car been doing this? I can rev mine in park and it doesn't do it. When accelerating it will make the noise. I should have been more clear in my post.A33 wrote:I have a similar noise with my I30, it only does it under load though(transmission in gear and driving). With mine I can stick it in neutral while driving and rev it with no noise but when I put it back in drive it still does it sometimes. Also when parked it will not do it either, after further inspection one thing I found was that the heat shield on the cat. converter under the car was loose, once fixing that it helped with the noise a lot.
You could just have something loose under the car, it could be pinging from type of fuel being used, or it may have another issue like a loose or worn out motor mount. Either way if you don't feel comfortable checking it yourself and it worries you then drop it off at the shop and let them figure it out.
I only use premium fuel, I'm actually running a can of SeaFoam through the car now to see if it helps at all.
Dropping off at the shop on Monday. Hopefully they can narrow down the issue.
I'll have to check into this, i've had my car for over 2 years now and it's still making the same noise. I've yet to track down the cause though and it still bugs me that it won't go away.xerexabante wrote:Try this, look at power valve on intake where there is a link from the vacuum solenoid. The plastic wears out and dis-engages when power valve opens for more airflow. This will create a rattle at 1800rpm when it opens (idle and or load). I had some carbon deposits when i had this link to power valve issue ( I got beat by a Prius on a green light) It adle look around the hood why I had loss of power. Now my power is back and smokes tires till almost 3rd gear.
Try a bottle of Redline Si fuel treatment to the tank to clear carbon deposits on valves.
That could be helpful to some of the other posters for sure, not the issue with mine though.xerexabante wrote:timing-advice-on-04-maxima-t516720.html
Please see above link, should answer your issues.