pifcat2, the ignition control module (ICM) in our daughter's 1991 300CE failed and we had a difficult time getting a replacement. Our local MB dealers claimed new ICM's were backordered for the 300CE's and unavailable. Finally after pressing the owner of one dealer the Parts Department Manager realized the 300SL engines used the same ICM and got one for me overnight, and the owner discounted it to $1,750 due to all the hassle. These ICM's can't be rebuilt because the internals are epoxied ... so the remanufacturers cannot determine what the internal components are ... at least that's what a rep at Beckmann Technologies told me when I called them seeking a rebuilt unit. A critical feature of these ICM's is the white heat-conducting paste on the back. If the paste coating is compromised/missing you can buy heat-conducting paste at Radio Shack. Also, our local indie stressed the importance of regular maintenance/replacement of the distributor cap, rotor, spark plugs and ignition wires to prevent ICM failure.

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Fred Hoelzle