Sonikt

Don't know about the steering wander but a wobble when accelerating up hill is 100% a driveshaft/CV problem. I spent over £1000 on bushes, ball joints and even a new DMF before I got to the bottom of this! Simple way to check is if the wobble stops immediately when you ease off the accelerator. Find a quiet, steep hill and accelerate/ease off a few times while driving up. If the wobble only happens when accelerating (never at coast) then it's the driveshaft inner joint. What causes this is a sticky spider bearing on the inner driveshaft joint. There are three bearings on the spider, each slides in it's own channel in the cup. On flat road the grease in the joint allows the stuck bearing to still slide in the channel, so the joint still more or less works even though one of the bearings is stuck. But uphill at full load the grease is forced out and the bearing starts to bind in the channel. This prevents the inner joint from flexing as it rotates, so it effectively becomes a crank and oscillates the engine on it's mounts as it momentarily sticks at the same point each revolution. This causes a disturbing feeling of the whole car wobbling from side to side. Driveshafts/CV joints are very prone to damage when suspension, wheel bearings, clutch etc. are being worked on, I see far too many mechanics carelessly allowing driveshafts to hang unsupported which can damage the joints. But new complete driveshafts are available very cheaply on ebay (like £25) and are not very difficult to fit.