Two problems related to transmission shudder have been reported for the 1996 Mercury Grand Marquis. The most recently reported issues are listed below.
Transmission vibrates, slips (sounds like driving over rumble strips) during moderate acceleration. Had similar problem with 1992 gr marq. Ford motor CO. Fails to acknowledge that problem exists and refuses to pay for fix. Problem has existed for over 5 years. Talked to a fleet owner of 13 1997 gr marqs and he said 5 had already failed. This problem should be cause for a recall.
Transmission vibrates, slips (sounds like driving over rumble strips) during moderate acceleration. The vehicle shudders and vibrates when traveling in 3rd and 4th gear and then loses power.