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Old 05-13-2001, 11:38 AM
Tinker Tinker is offline
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Join Date: May 2000
Posts: 376
Does any one know if it is normal for the ACC switching valves make a hissing noise (noticeable vacuum leak on the side opposite to where the line fits in the unit) when they are working correctly? It appears to be from the five pot (#12) valve on a 87 190e 16V. Thanks.


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