Thread: 1991 300E - runs rough, can she fix it?
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  #25  
Old 06-27-2014, 06:29 AM
Ferdman Ferdman is offline
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Join Date: Aug 2002
Location: Southeastern PA
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Typically the Oxygen sensor connecting lead is blue with a black grommet where it penetrates the driveshaft tunnel. The grommet is likely just under the carpet edge on the side of the tunnel.
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