Hey, I need Help im stuned! I just lowered my car a week ago with proggress springs and kyb shocks. Then a few days later I noticed when i push on the gas pedal and the speed is hitting above 40-50mph i feel a weird grinding vibrating sound. I feel it on the pedal and on the chair.. I also hear like a grinding vibrating noise and i dont know what it is.. IT only happens above 40mph and defintly at 50 mph.. IAT first i thought it could be an allignment problem but then figured it cant be becuase it only happpens when im pushing on the gas pedal, it goes away right after i let go of the pedal?

What can this be? Please help me? Thanks .....

 

Might sound dumb but it could be your wheel balancing, wheel alignment, or bent rim. If you rule all these out might be a suspension problem.

 

http://forums.maxima.org/showthread....n+accelerating

(Make sure you read the whole thread, because it was quite a journey for me to find the problem)

If it's mostly there when accellerating:

Your car is too low, the roads are too bad where you live, and you've got a bad Inboard CV Joint - probably driver's side.....when mine started going out, it took 3 in 3 months - so they go pretty quick....

I actually have a "new new" one sitting in my living room right now. Luckily I raised the car on higher springs, so this should be the last time.

Call Marti at raxles.com....great service, lifetime warranty.

 

is this common with lowering?

the axles showed NO signs of problems at stock height?

iansw, what springs do you have now?

 

My passenger axle is going right now, but since I raised it back with B&G Springs, it seems fine - symptoms are gone.

 

Ian,

I think i have found out what my vibration is coming from. I had some hubcentric weights put on my car when I had some Khumo's on my car. I have since put some dunlop sport a2's on there, and NTB put on outside weights again. They assured me that they would take off all the hubcentric weights and do it correctly. I just took their word for it....

Anyway after taking the car back there 3 times arleady, I decided to check and see if they took off all the weights. To my dismay, my front right wheel has some on there left. NO Wonder there is a shimmy! I haven't gotten it balanced again yet, but rest assured I'm gonna rip someone a new a$$ when I go back!

If not, I don't know what it could be. CV Boots and joints all taken care of.

 

My boots looked perfect too.....

I hope it is just balancing - but if it was , it wouldn't happen only under accelleration.....it would happen above 40-50mph all the time.

 

I'll let you know

 

did sprint springs cause the prob? if not, which?

 

maybe you need a balance and alignment?

 

Not just Sprint Springs, but a combination of factors -

1) Not cutting the bumpstops
2) Bad roads
4) Sprint Springs

All of these contributed equally, I think.

 

not cutting bumpstops? what does that do, and how do i cut the bumpstops? when is that a good idea?

 

Whenever you're dropped below 1.8 inches - I don't know how - because i never did it - I just got higher springs....