So I posted the other day in this forum about a sporadic stalling issue I'm having with a 2000 Mercury Grand Marquis but I haven't gotten any input on that. Today, my wife tried to go to work but the engine wouldn't turn over. All the normal sounds and lights came on when the key was in. The engine cranked, but it just couldn't start. There wasn't an annoying clicking or hesitation for the engine to crank, it just wouldn't turn over. I drove her to work in my car and wondered if the battery power was low so I came home and hooked up the my jeep battery to hers for 30 minutes. It seemed like there was a very faint smell of some kind of electrical burning in the air but I couldn't sniff it out anywhere when I looked for it.
I tried to start it and it wouldn't turn over. I disconnected the jeep, unhooked the batter and took it to AA Parts for confirmation. They said the battery is charged and no signs of anything wrong.


So I came home and reinstalled it. Thinking I was intelligent, I turned the ignition to the first position only to see if any dash lights would stay on. The usual ding ding ding sound came on, the normal dash lights came on and turned off, except for the battery light and check engine light stayed on. Then, all of a sudden, those lights turned off. I returned it to off position and then tried to start the car. It made absolutely no sound, no clicks. The key turns freely to all positions. I disconnected and reconnected the battery hoping to undo what I just encountered but again, absolutely no sounds or lights coming from this car. Will someone please give me a suggestion?

 

If your Mercury Grand Marquis doesn't respond at all when you turn the key, several potential issues could be causing the problem.The most common reason for no response is a dead or significantly discharged battery. Check the battery voltage with a multimeter. A fully charged battery should read around 12.6 volts. FMWhatsApp