Carterhkrs

Maybe Im being too picky, too perfectionist but dont think its the case:

Car feels rough, very rough and its not supposed to be like that!

Sometimes its smooth as butter, it goes over bumps with no hesitation and unpleasant feel in tha frame and no problems on rough roads, no vibration, no shaking, just smooth flying, smooth braking but IT HAPPEND TWICE! in 6 months, TWICE!

Usually it drives rough, every bump, every obsticle on a road, feels like a damn hit on a cars frame, steering wheel is going nuts, going left-right by itslef, need to put mucho power to hold it in one place )) turns on speeds over 25mph feel like i got bricks under my tires, no noises (no clunkin) just feel like its going on something not even and strange feel in a steering wheel like its going some levels (lets say car has finished 20% of the turn and i feel like a small kick in a steering wheel, then smooth then like 40% and kick again) even if pavement is precise, same with braking, braking applies in stages as well, even if i floor and hold brake pedal it goes stages (for say I feel car is slowing down then kick and feel like brakes are released and slowing down again) feels in the pedal too

barely noticable vibro when turning on low speeds, if going 10mph and turning at angle of 75 u feel vibro in tha seat, dead pedal, and steering, not always tho, there is 10% chance when it happens

Also loss of power is present as well, from time to time its going fast as it should but sometimes I floor the pedal and get acceleration of a bicycle, just nothing happens (I suppose cooling is what i need?)

Carterhkrs

All mechanics I been to, kept saying all good, its normal

BBBSS

If its mechanically sound I'd guess the stability control is doing something wonkey. I know when I had my Trailblazer SS a few people reported strange events during turns sometimes where the car stopped and refused to move till you restarted it. Pretty dangerous. A reprogrammed stability control solved it. Maybe you need an update or have a sensor giving strange readings at times?

Lelix

Sounds like the car has a few separate issues. Your suspension roughness sounds like a shock is getting weak and is bottoming out, does it feel any different with the car raised? Wandering steering could just need an alignment or it could be linked to the uneven steering feel in the turns which could be a failing pump or a malfunctioning Speed Sensitive Power steering valve. Poor braking feel is an SBC problem. Vibration throughout the car might indicate a failing Engine/Transmission mount. Lastly your drop in power definitely sounds like a cooling issue.

These are just my guesses based on the problems you've described, all of these issues would be easily overlooked by most mechanics. I would say find a reputable shop that knows these cars and have them scan your car, do all the SBC test in DAS etc.

cij911

BENZWORKS is your / your car's friend....

Lawrence1

have you tried to have another local member drive your car and compare with theirs? Preferably you'd want someone that knows and works on their car ...

I'll be in the LA area on Friday and wouldn't mind giving you a second opinion if we can find an agreeable time and place.

Carterhkrs

Car feels a bit softer in sport 1 than in comfortable (!)
Sometimes there is vibration when i lower/raise the car
Never been lowered
Did my engine/tranny mounts a month ago...

Carterhkrs

Would be great, thnx
Im taking it to the shop in an hour, need to get rid of the brake squeal

Sir-Boost-a-Lot

iTrader: (1)

You could have a problem with a ball joint/radius arm/tie rod end/ shock that the mechanics just didn't catch. There are some good mechanics out there but many not so good ones as well.

SilverStrk

Benzworks all the way.. Ask for Serge... They WILL figure out what's going on with the car...

bnzuovr

Have you checked rims and tires could be a bent rim or bad tire?

Carterhkrs

Drove there today, had it checked, he told me the problem is tie rod bushings (?) that are going bad

Also had my rotors replaced pads resurfaced, helped for 30minutes, brakes squeal again

About to give up and start abusing that car til it falls apart

Carterhkrs

Rims are good, tires arent dead either, they suck as tires but not worn

cij911

Tie rod bushings will definitely cause the problem you are describing (and should be fixed ASAP)....as for brake noise, seriously why don't you just get OEM pads ??? OEM pads will create more dust but will be very quiet.

Sir-Boost-a-Lot

iTrader: (1)

And quit whining about it.. It's an eight year old used luxury car.. S**t breaks, fix it. Its an awesome car when its right, so Don't be mad at the car because you took it to toilet bowl mechanics.

Hammer Down

Your car may need a new owner, just ball busting but it may be something to consider.....

berti_00

+111111 on that sir

Carterhkrs

Sorry that feels like whining to you guys,

Didnt know that phrase which basically means hell with it, gonna abuse, interprets like whinin,

As for mechanics, yea im damn lucky, what can u do

Been searching forum for trustworthy mechanics in LA area, no result, seems like best one is benzworks which is in OC

black06c230

Take it to where the best place is. I take my car to BIP in Atlanta, GA which is about 180mi from me one way so 360mi round trip, but is well worth it when they can ensure my car runs as it should.

Forrest Gump 9

I'm 90% sure your rear shocks are done. I had the "comfortable mode felt like rock, sport 1 was actually more comfy" syndrome, and changed out my rear shocks fixed that on my car. Also check your alignment. Good luck.

novae500

Def suspension parts are wearing out, esp with the age of the car. I'm going through this with the front end squeaks, clunks, creaks. So far replaced lower ball joints, ordered upper ball joints. Those two are the culprits of front end noise usually.

Do you plan on replacing the tie rod bushings that Benzworks recommended?

vntgspd

You need to give the pads time to break in to the rotors. 30 minutes is not long enough. You need several hundred miles of normal driving. Also, the brakes will not be COMPLETELY quiet on most of these cars with massive fixed calipers but they should not be obnoxious either. Light squeak during light braking at lower speeds has always been the worst for me on all of the Porsches, EVOs, and Mercedes I have owned with fixed calipers. It is also influenced by brake temp and ambient temp.

But one rapid stop from any speed or especially from 100+mph and you will love these brakes!

Manuyc

yeah it called maintenance look it up. lol
it probably all your bushing that you need to change to make the car ride right again.

CharlyE500

You should focus in maintenance before doing any modding.

Hotrod-Realtor

Great video on how to break in new brake pads.