I have a knocking under the dashboard on the passenger side

Barbara Hayden

Asked by Jan 20, 2015 at 11:46 AM about the 1997 Mercury Sable 4 Dr GS Sedan

Question type: Maintenance & Repair

3 Answers


does it happen when you do something eg accelerate, turn, try to start . is the CEL on

1 out of 1 people think this is helpful.

It could be a heater control servo motor stuck and making a knocking sound, try changing mode controls or just turning the HVAC system off when you hear it and listen for it to stop, it might take a few for everything to shut down on the unit.


Believe it or not, it could be the right front strut.

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