Check the Water Temp Sensor. It tells the CIS-E controller the Engine Temp and is what tells the CIS to fire the Cold Start Valve and also to regulate idle, to raise, for proper warm up. When that sensor fails the CIS system thinks the engine is warmer than it is and thus does not provide enough fuel or idle control.

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....