Question about 1986 Mercedes-Benz 300

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No high idle at cold start

When i start the engine when cold the accelerator has to be held down a bit to start but it doesnt go into fast idle. It seems like the cold start injector or something of that nature is not working. After it warms up it runs fine but when cold it stalls if you try to drive while cold.

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I had same problem check the OVP fuse located behind the battery that were mine is i have a 1990 check were yours is at if the fuse is burnt all the electronics that help you engine run are inactive check it before anything the overload protection relay

Posted on Jun 11, 2009

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