Quote:
Originally Posted by SilverLady
Yes, I had that TSB done that included the control arms, etc. and definitely had a harsher ride afterwards. Where the original ride was dreamy even over speed bumps, the GX suddenly became like a jalopy over every little road imperfection.
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Quote:
Originally Posted by GGGXXX
i had TSB done 2 years back - new driveshaft and control arms...after fix, very stiff ride, air suspension non existent....complained, took it back.....utlimately got the right tech who figured out that the car needs to be 'stablized' ie. you cannot tighten the bolts until you let the car stablizie/ 'settle' .....whatever that means....but bottom line is that air supsension was back and so was the ride quality.....and no clunk.....don't not settle for a harsh ride... take it back and get the right tech or see another dealer..
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Chalk it up to lazy or inexperienced techs.
Control arms do not freely float on hinge at the inner joint to the chassis. That is the control arm does have have complete freedom to pivot on the inner joint. They are affixed via a solidly mounted rubber bushing and it is this bushing that must flex and deform to give the control arm it's range of motion.
This means that they control arm joint should be torqued down only after the suspension is loaded to the nominal ride hide. This allows the bushing to be zeroed out when the car is sitting on the ground. The bushing should only deform and flex when the suspension is compressed, or the wheels allowed to droop.
Silverlady, your tech more than likely just torqued down the suspension arm with the car in the air on the lift. Meaning that the bushings are resisting compressions and are loaded already at normal ride height.
I would go back to the deal because the control arms will prematurely wear out and fail when installed this way as they are always under tension, and over tensioned as the suspension compresses.
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