starting problem

I had this issue on mine, apparantly quite a common problem too. Try the relay next to the battery (overpower relay) Its easy to find and has a fuse in the top of it. If you like try knocking the fuse against battery whilst a friend trys to start the car. In theory the relay should un stick and the car should stop misfiring. Costs about £50 and a dealer only supply (in uk)

I saw your question and I believe the problem is in your distributor connection to one of your wires. Perhaps one of your wires are improperly connected to your distributor. Start the engine and open the hood and listen for a ticking noise around the distributor. if you can't hear it perhaps you can see an arch (but it must be in the dark before you can see the arch) because of a bad wire. That is most likely why your engine is skipping or misfiring.

my guess would be the fuel system,pressure problems/,pump/,if it consistently runs bad at startup/cold temps. if its cis then lots of factors come in to play.

You can also check cold-start injector or thermo-timeswitch in fuel system.

there is a plastic pannel behind the battery.remove this and you will see 2 10amp fuses.one is a cold start curcuit.check both.i had this problem with my 1991 300e 4matic.one of these fuses was blown.replaced it and problem solved.

Cold start valve/injector takes command from coolant temp sensor at rear of head. Check across terminals of valve for approx. 18 to 20 olms. Check continuity of plug on sensor with end plug going into valve. All 4 prongs are positive.

Make sure brown ground wire is doing its job.