im after some help please......ive a 51 reg mk3 tddi mondeo, i had the tracking done as car was pulling to left, all good for a day or so then went back to how it was before? another thing is when on full lock steering feels weird as if wheels are overturnig/slippin??? lastly steering feels quite heavy at times, more so when slowing down at roundabouts/junctions???

also slight clunking from underneath when going over speed humps?

any ideas please.........thanks for your help re thermostat, spot on all sorted!!