i have no heat in my 1994 mercury grand marquis. what could cause the heat to stop working
Perhaps your timing.
There could be many reasons why the 1993 Grand Marquis make noises when the doors lock. The wiring could be off, or the motor could be going out.
Many things could cause this. Loss of air pressure, air pump not working, etc.
Could be many things. Rad., Fan, thermostat, fan sensor, water pump, blocked passages.
a rough road can cause the fuel shut off switch to turn off
This could possibly be a fuel problem. Has the fuel filter been changed ? Fuel pressure checked ? Is there dirt in the fuel tank ?
Could be the tires, or your front brake rotors
Normally not from the manufacturer, but it could have had one installed after that.
Could be the rad. , the thermostat, hoses, fan. You have to check all.
It could be three thing... 1. You blown a fuse 2. You have a faulty switch 3. Your Marquis need to be rewired