air conditioner compressor not turning. broken or is there a module or fuse to replace?
Possibly just low on freon.
Low on freon, or presssure cut-off switch bad. Easily replaced. LS has 4 wires, GS has 2 wires. On the GS shorting the wires will tell if the switch is bad. Not sure on the LS which wires.
Search Mercury Grand Marquis Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Mercury Grand Marquis Experts