Re: 02 Mountaineer Coil Springs
Verify with a dealer that there isn't a recall on the springs/suspension. I had a broken front spring on my '99 Taurus that was covered under warranty. Even though I've owned the car since new, Ford never bothered to send me a letter or any type of notification. Perhaps that's in part to doing my own maintenance the last several years! Otherwise, as mentioned, replace all suspension components in pairs, springs, shocks, struts, etc.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!