Having problems with your 2003 Mercury Grand Marquis ?

My ac or heat won't work

\015 My ac was working fine all day then I cut the car off when I started the car back up and tryd to turn on the ac it didn't blow at all. My heat or defrost don't blow either\015 Posted / edited by AnonymousUser on : 19-03-2018

Answers :

For the a/c, you may be out of refrigerant, and need it to be refilled.
\015\012For the heat part, it is most likely one of the following things: low coolant, thermostat, heater core, or maybe even radiator malfunctioning.

If you need some diagnostic tools to test the A/C, I recommend the actia multi-diag.
Repair Help & Product Troubleshooting for 2003 Mercury Grand Marquis

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