1999 Mercury Grand Marquis has heat but does not blow out ... what could be the problem

Asked by Nov 30, 2011 at 10:39 AM about the 1999 Mercury Grand Marquis

Question type: Maintenance & Repair

2 Answers

1,495

Blower fan no good, could be a the fan speed resistor switch.

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345

The fan speed resister switch failed on my '01 GrMq about two years ago. At first fan would blow at only one speed no matter the position of the fan switch, then it stopped blowing at all - I guess when the fan speed resister switch totally failed. I believe it should be easy to replace after removing the plastic HVAC shroud under dash on the passenger side (on my '01 - yours may differ). I had the dealership do it b/c I thought the fan may have failed. Bad choice - not cheap!!!

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