Lincoln/Mercury Repair: 1999 grand marquis, mercury grand marquis, grand marquis

Question
My 1999 Mercury Grand Marquis has a vibration. shudder at various speeds.  It feels like I am drving over safety ridges and the duration is about 2 seconds.  This problem does not occur when I am braking or coasting to a stop.  The car has 99,000 miles on it and it is in good shape.  The tires are still pretty good so I don't think that is the problem, but what do I know.


Chuck

Answer
Hi Chuck,

If you are experiencing this problem mostly around 45 mph, you have torque converter chatter. Extremely common in Crown Vics, Town Cars and G. Marquis. There is a little tube of stuff called "shutter fix" availible at most auto parts stores that should do the trick. Ford says to have you bring it in for a transfussion, but I found the anti shutter works great.