http://www.peachparts.com/shopforum/showthread.php?threadid=39610&highlight=idle+higher

In the above thread, there was some talk about raising the idle speed by 50 rpm by grounding one of the wires to the idle speed controller..

I can't really make out the text in the image you posted.. I also cannot find any further info about it..

Would you be willing to help me out with the exact proceedure for an 89 300sel???

THanks,
Jay

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89 300SEL Money Pit

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