humming sound till car warms up 2000 Marquis

Asked by schllac Feb 13, 2010 at 10:40 AM about the Mercury Marquis

Question type: Maintenance & Repair

I have a 2000 marquis and I hear a humming sound till the car warms up. what could it be?

1 Answer
485

Julian answered 14 years ago

do you have a rear load leveling system? if so, your compressor might be running. my bros towncar was doing the same thing when the switch buggered up

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