The 92 is the W140, do a search on that model and you will find a lot of information. The most common problems with those cars are the Evap Core, which is a $3000 job to repair. Make sure that has been done. It is a fabulous car and a lot of car for the money. The systems are very complicated, but overall the mechanicals are simple as other models. The radio amps usually go out too, so check that out. Overall is a great car! Happy Benzing!
Brian

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Brian W. Heitman

www.MBCA.org/northtexas

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