now this is a weird one. driving today, i accelerate and the car accelerates as expected. when i let go of the gas, obviously because it's in gear the car slows itself down by natural engine rpm slowing it down. but while it's slowind down, i hear a grinding noise, kinda sounding like it's coming from the front passenger side wheel. i accelerated again and it disappeared, as soon as i let go of the gas, it starts to grind again, and stays there as the car is decelerating. now if i press the brakes, the noise stops, if i let go of the brakes, the noise continues.
after full inspection, i don't notice anything loose in my suspension, but it sure is annoying the hell outta me. one thing i suspect is my FSTB. since my engine is slowing down on it's own through force of it's own, the engine would shift and push against the FSTB and as soon as i accelerate, the manifold would push away from the bar, and when the brakes are pressed, pressure is taken away from the engine, again distancing the manifold from the bar. and only when i let go of the gas, does it make that grindy type noise.

well, that's my only suspicion. does ANYONE have any idea what else i could look into. has anyone ever had that noise. is it known that the FSTB create this type of noise when manifold is rubbing against it?where should we place the washers, on the driver or passenger side.

note: it's a couresty FSTB.

thanx boys n girls.

 

What I would do first is remove the FSTB and see if the noise is still there, if so, then obviously can rule that out before you start fiddling with washers. If it is the FSTB then put about 2-3 washers on each stud, including the drivers and passenger side. Do this cause you want to lift the whole thing evenly, not uneven.

Now if its not the FSTB since it coming from the wheel assembly, I can only think of two things, either the caliper is locked up and grinding away the rotor (but then again you would hear it worse during braking) or maybe the wheel bearing on that side is gone.

Dixit

 

Stuck brake caliper is more than likely the problem, take it to a shop and have them check it out. Im takin my car in for the same problem tomorrow....

 

Wasn't motor trend complaining of this on their 350z test car?

ARFF

 

If it was the wheel bearing he would be getting more of a whining sound and not grinding..

 

2-3 washers PER stud. interesting. i have NONE on any stud. then i ask myself "why haven't i heard this till now" then i answer myseld with the engine mounts being more flexible now that the car is broken in.
E55, you're gettin the exact same issues? noise while slowing down but nothign while braking or accelerating? if it is a "stuck" caliper, how do you clear that up.

edit: also, wouldn't a stuck caliper tend to steer the car while braking or not braking by the force being applied. i ONLY get the noise with manual slow down, not with brakes, and neither with acceleration.

 

I have a similar issue going on also. I noticed that the immediatly goes away when I press the clutch which makes me believe it is transmission related. Since I notced you were a 6 speed manual this is something you could try. I found a thread on here where someone else had a similar issue and the dealer relaced the differential bearings, which solved the problem.

 

care to link me to that thread?

 

I get that same noise on my '02 SE Auto. I am going to have the wheel bearings and CV joints checked as a precaution. I will also have them check the brake caliper.

 

I am having trouble locating the thread I mentioned but here is a similar one. Good luck. I have been meaning to take mine in when I get a chance, while it is still under warrenty.

http://forums.maxima.org/showthread....smission+noise

 

I got it checked, turns out the brakes have 1% or less left on them. that is why they made that noise

 

ok, let's really analyze this...i did some more testing on the car today.
first of all, i can't get the FSTB off. when they did my coilovers i think they gorilla tightened it, so i can't test if it's that. so then i go onto other testing. first i considered all the other options, differential bearings in the clutch, clutch noise, wheel bearing, cv joint, etc.....

CV Joing and wheel bearing, i feel are knocked out right away cause it would not make a grinding noise. it would be more of a pop with the CV joint and the wheel bearing, the car would steer uncontrollably.

i raise the front of the car up and turned ont eh car, then i started driving. first gear, went to 4k rpm and shifted into 2nd, went up to 4k rpm and then let go of the clutch. NO NOISE. nothing. so that immediately knocked out clutch issue. i would still get a noise whether int he air or not. this stil leaves the FSTB as an issue since ti didn't make noise, but the wheels weren't at any pressure to force the engine to jerk suddenly. the wheel was spinning in air with no force against it.

so now, let's see. what choices do we have left. pads, i looked at them and they seriously seem perfectly fine. no wear, no odd warping, and the car has 13k miles so if they were that low, that's just kinda crazy.
frozen caliper, would it still make that noise in midair. it should have, but it didn't, so that seems to be knocked of the list as well.

ok, so that was my latest update. anyone care to add any other "maybe's" to the list.
i'm gettin close the pretty sure (actually hoping!!) that it's the FSTB, i see posts about 2-3 washers PER STUD and i have NONE which kinda shows me that it should be hitting it.

 

I'm going to disagree with you here - I think a bad CV joint is entirely possible. If the joint is wearing down, the stress of braking and accelerating could mask any 'free play' in the joint which became apparent when the stress is removed (i.e. a free roll).

I had something similar happen to an old Civic years ago.

 

Jack up each wheel, and spin it individually, you can see if a pad is dragging against a rotor. It will make noise/grind as you turn it if its the pads. If you feel the grinding, but dont hear it, it may be dirty rotors. Spray them with brake parts cleaner. Also, grinding whilst stopping may indicate a possible master cyl problem. If it isnt any of the before, go have the master cyl checked.

 

MoCoMax, agreed. that may be possible. any way to personally check for a bad CV Joint w/out taking it to the dealer. i'd like to diagnose the issue before brining it to the dealer for 2 reasons:

1)i hate dealers2
2)i have agx's/ground controls so a dealer can find anyway to blame the problem on the aftermarket suspension.

 

I've never tried checking mine, so I'm not sure. If I were you, I'd take a good look at the 'boot' that cover the joint - if it's torn or missing, you've probably lost the grease that lubes the joint. That would be an indication that the joint could be the source of the noise. If the boot is still in good shape, you'd have to take it off to see much of anything. A good boot means the CV joint is less likely as the source of your noise, but I don't think it would rule it out.

I agree with your take on dealers - I have yet to have a positive service experience with my car.

 

VERY ODD. so i never took my wheel off during the whole noise inspection. today i decided to take it off. as i walk up to my car, i see that i only have THREE lug nuts. 2 are missing. this leaves me in shock. taking off the other 3, they all were taken off with my hand, that's how loose they were. 1 of them was stuck in a crooked position so that was hard to come off.

my assumption, someone was attempting to steal my wheels and i got there just as they did it. in doing so, they left 2 nuts off and in a hurry, attempted to take off the third and ended up stripping the tread. i immediately got some new lug nuts and replaced the missing ones, along with the 2 that were able to go in. the 5th one is shredded, so i need to have it replaced, but hte other 4 are secured so the wheel is nice and safe. i drove around the block, and went into reverse. the noise is completely gone. seems like the wheel was rubbing up against the hub.

odd that someone would try and steal my wheel, but also scary that i was driving around with a loose set of lug nuts.

just wanted to let you guys know. thanx for all the tips. believe me, i was checking the boots, wheel bearing, coilovers, strut mounts, brakes, rotors, brake shield, you name it, i triple checked it.

 

Daaayyyymmmmm....glad your wheel didn't fly off!

 

Get Wheel Locks, save yourself alot of trouble

 

Holy !@#$ that's crazy... makes me wanna torque my lugnuts just for good measure... heh!!

 

way ahead of you. remember, i was missing 2 lug nuts. so rather than buying 2 regulars, i bought a set of wheel locks and then evenly distribute it.

and yeah, kinda makes me wanna check my lug nuts every once in a while.