Hey guys does anyone know why ever since i installed lowering suspension on my car it shakes on acceleration? Any ideas why this would happen when lowering the car?

 

maybe you need an alignment.

you gotta be more specific on your explanation of the problem for us to be able to diagnose it better

 

I dont think it would be an alignment just because it only happens when i accelerate. Once im at a cruising speed the car is fine. If im on the highway cruising its fine. But when i accelerate to enter the highway for example it shakes. i could feel the shaking on the gas pedal and steering wheel even the doors.

 

How much did you lower the car?

 

not by much you can fit almost 2 fingers.

 

How many fingers could you fit at stock height?

Trying to determine/estimate how much your camber has changed...

Does the shaking increase with speed? Does it shake while braking and while coasting?

Can you describe the shaking in more detail?

 

At stock height i was able to fit close to 4 fingers. the shaking only increases with more speed. So if im just cruising along and i decide to give it gas it starts to shake then it stops once i stay at that speed. Does that help? Basically if im driving at 40km and i decide that i want to go 60km once i gas it it starts to shake. But if i decide to cruise at 60km its fine. So its only when i want to increase my speed.

 

It could be your tires.

When you lower the car it changes the way the tires contact the road. How old are the tires you have on (how many km's) and what kind/size are they?

 

The summers that i had on were only 2 years old, they are 205/45-16. But just this past weekend i put on my winters which are also new and it does the exact same thing. no difference at all in the car.

 

All your lug-nuts are properly torqued?

 

Yup for sure. What bothers me so much about this is it only happened once i got new coilover suspension installed.

 

Thing that bothers me about this is it only happens upon accelerating which puzzles me because the first thing I thought of was maybe balance but you'd always feel that.

What suspension are you using?

 

I have tein super streets installed.

 

Is it only in one gear or every gear?

yeah, without seeing the car in person, it's difficult to diagnose...lol.

 

it happens pretty much in any gear but i notice it mostly when im in the city crusing in 4th the i decide to accelerate and there comes the shaking

 

It could be a bad motor mount or two. That would cause excessive vibration on acceleration only and not deacceleration/cruising... Check the 3 main motor mounts (one on each side down low. One bolts to the engine block down near where the A/C compressor as and the other bolts to the trany. The 3rd is hard to see but is down the back of the engine, under the intake manifold and bolts on where the trany is bolted to the engine...)

If those are good, check the other two mounts. One bolts to the top of the trany on the passenger side and the other is next to the timing belt cover on the drivers side.

I'm guessing one or more of these mounts is shot...

 

thanks will get that checked out. Do you recommend any shops? dont really want to go back to the shop that i used to go to.

 

MPR is right it does sound like motor mounts was just thinking the same thing last night. Just try some local shops any shop can help you out with motor mounts but make sure they don't feed you crap and tell you to replace all of them. Just be there when their checking. Just ask him why it needs replace if it does.

 

blackintegra, where are you located?

 

That shaking was happening to me also ,it was like a side to side shake , it was cuz the axle was slowly slipping out.

 

Im in the dufferin/rogers area

 

how did u fix it? was it cause it was tight or was it broken?

 

If you didn't get this fixed yet, I'd recommend checking out my guy.
They replaced my mounts cheap! I didn't even know I had a problem and they showed it to me. Yes, they SHOWED me. Both in and out of the car.

Altech Performance
325 Weston Rd. #4c (S. of Rogers, N. of St. Clair.) 416-539-0240

They do all my work. Good guys and good work and REASONABLE - cash deals, etc.
Google them. AltechPerformance.com

If you go, ask for Joe and tell them Michael (black guy with the black Integera) sent you...
"...you'll be glad you did..." lol Seriously, I highly recommend them...