Control Arm(s) cause BANG??! Audi 90

Erik, It's possible that the control arm is going - although a more likely culprit may be a cv joint, strut bearing, if it's a quattro, you may be in need of a u-joint. The temperature dependence may be due to the cold making old, thick grease even thicker. I had a similar problem shortly after I got my

5ktq - there was a banging under the floor at the driver's feet (LHD car - not UK RHD) - turned out to be the failure of the engine and transmission mounts on the left side - the transmission was slamming the underside of the car when accelerating. R&R was fairly easy on the 5ktq - don't know about on a 90. Cheers! Steve Sears 1987 Audi 5kTQ - driver's tie rod on order - failure mode was silent but wandering steering, especially in ruts 1980 Audi 5k - strut bearing failure to be addressed - makes a "boing" sound as steering wheel is turned at low speed 1962 and '64 Auto Union DKW Junior deLuxes - winter storage problem to be addressed in 5 months...... (SPAM Blocker NOTE: Remove SHOES to reply)