The a/c on my 2000 Grand Marquis, while running on Max or Normal will periodically switch from blowing from the dash to Bi-level. After 10 to 45 seconds it will switch back to the dash for maybe 5 min

Asked by Jul 23, 2017 at 02:50 PM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

1 Answer

102,245

Sounds like the HVAC computer needs to be reset, any good shop can do this for you.

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