Why would the engine die when the heater or air conditioner is started in my 2001 Grand Marquis?

Asked by Nov 28, 2015 at 01:41 PM about the 2001 Mercury Grand Marquis LS

Question type: Maintenance & Repair

When we try to turn on the heater or air conditioner the engine dies.

1 Answer

19,810

Sounds like the idle is to low. Check for a vacuum leak.

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