I just want to make sure that is what I plugged in an attempt to stop a hissing sound I am getting at about half throttle when letting off the pedal. Well, plugging the vaccum line didn't get rid of the sound. It seemed to quiet it a bit and it is not as prevelant, so what does that mean?

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__________________
RT


1984 300D---Sold
1995 E420 - 106K - Brilliant Silver Metallic/Orion Gray --- Sold
1984 300SD - 151K Manganese Brown Metallic/Mostly Black --- Sold
1982 240D - 79K - Manila Beige/Palomino---Sold