LTU_max

iTrader: (2)

After using seafoam, a few days later my car started making kind of resonance sounds. It sounds like a high to medium high hum, with a little bit of grinding, but pretty mild. It does this only when it's very low RPM, usually idle. It happens on and off on certain days, usually the colder the worse it is. The engine temp also doesn't matter, the sound happens either cold or warm. Any ideas on what it can be? I've heard that people's spark plugs get some residue on them after the seafoam, but I don't think the spark plugs have much to do with such a sound. Any ideas?

LTU_max

iTrader: (2)

Here's a clip of the noise on photobucket:

http://smg.photobucket.com/albums/v6...=Resonance.flv


Filegone (Better quality):

http://www.filegone.com/49h9

Delvin

Is everything tight on the intake piping? Is it idling rough?

LTU_max

iTrader: (2)

Intake piping is pretty tight, idling sometimes rough. You can see what I mean in the vid ^^

Delvin

What I should have asked was do you feel anything when its making that sound? I heard it in the video and it sounds like the engine or exhaust is bearly hitting something its not supposed to and the feedback is going throughout the interior.

LTU_max

iTrader: (2)

I can sometimes feel my accelerator pedal vibrate barely. But only sometimes, usually it's just the noise, can't feel any vibrations.

darklegend06

iTrader: (11)

it seems more like something is loose. Very interesting. Sorry can't really help.

Also are you coming to the Nissan meet at busse woods this sunday?

LTU_max

iTrader: (2)

Probably not What do you guys think could be loose? I'm pretty sure it's internal, since the seafoam is what caused it. Maybe too much carbon build up somewhere, causing the vibration? Maybe an oil change?

jvelos3

iTrader: (2)

does your brake pedal vibrate...next time you hear this press your brake pedal...

I also hear a similar sound with my max...not as loud or as frequent...but I can feel vibration through my brake pedals a little on the gas but not as much. I have no idea what it is either.

LTU_max

iTrader: (2)

Actually when I drove today, I didn't feel any vibrations. I have no idea what to do, since it can gradually get worse. Also, I added more seafoam (deep creep) into the IM when it was doing the noises, and the noises got louder - that was the video, after some more seafoam. So basically, the seafoam made it louder/worse, but the car drives just as great as it did before, maybe even a little bit better. 1st gear is now a monster, and can be going 20mph, floor it, then just hear tires spinning, then 2nd, and a nice big chirp. So I'm thinking maybe get an oil change? I need to change every 3,000 miles, and it has been 2,100 since the oil change. The noise is now more frequent after the seafoam as well...