the loud noise is from the link that's still attached to the spindle hitting the inside of your wheel... when you take off the tire and look closer, you'll find the other half, and if you take it off, the noise will stop. it's not doing much, as army says, but it is doing something. it's CRITICAL on a wagon, as it's the part that tells the SLS what height the body is in relation to the tires, but on a CD/D it's only slightly offsetting the squat from corners... the front is doing the majority of the work.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!