1994 Mercury Cougar vibration

darlalee

Just bought a 1994 Mercury Cougar xr7 with 90,000 on it and noticed that the rear end shudders/vibrates around 35-45 mph. What could cause this? Otherwise it runs excellent and smooth. It doesn't always do this, either, only sometimes..

Mr_Shiftright

I'd guess tire balance if you feel this vibration in the seat of your pants. Second guess bent rim. Third guess---tighten those lug nuts! Fourth guess--bad U-joint or unbalanced drive shaft/bad carrier (center support) bearing or mount.

darlalee

Thank you Mr_Shiftright, will check those out.