You don't mention what year of Mercury Grand Marquis but the owners manual will explain what to do if the transmission gear shift lever will not shift out of ( P / PARK ) with the brake pedal depressed ( it has what Ford calls the " brake shift interlock " ) As of August 6 , 2012 you can still view the Mercury Grand Marquis owners manual online ( back to the 1996 model ) at : www . motorcraft service . com ( no spaces ) Click on Owner Guides
check your brake lights if they not worhing replace fuse or brake light switch
It could be a fuse. If the brake lights do not turn on when you press the brake pedal check your fuses under your dash.
Here is a handy trick to bypass that problem. Once running, turn the key slightly pass the start position. You don't have to go so far as to here your starter grinding. As you are doing this you should be trying to shift out of park. Sorry I can't guide your fix.
APPLY BRAKES AND SEE IF BRAKE LIGHTS COME ON. IF NO BRAKE LIGHTS, REPLACE THE BRAKE LIGHT SWITCH LOCATED ON THE BRAKE PEDAL ARM AND THIS SHOULD ALLOW YOU TO SHIFT OUT OF PARK. IF THAT BRAKE LIGHT SWITCH IS BROKE, YOU WON'T BE ABLE TO GET IT OUT OF PARK
Just turn the key to the first position, ( not on ) and then you will be able to shift to neutral and start the car from there. Have the fuses checked and check the shifter sensor on the brake pedal.
Sounds like a bad Brake Light Switch. It's located on the steering column.
If it works like the one in my '94To set it: in park press the pedal to the floor.To release it press the regular break pedal and shift out of park.
Check the fuses- Shift interlock is the same circuit as brake lights. As a temporary measure - try to turn the key to 1st (unlock) position shift to neutral to start vehicle and then shift to Drive.
Stuck in Park? Check to see if the stop lights are working - shift interlock is the same circuit - check the stop light fuse Try to turnthe key to 1st (unlock) position, shift to neutral start vehicle and the shift to Drive
Find the switch attached to the brake pedal for the shift interlock and jump the two wires together. Be careful not to disconnect the brake light switch
THE BRAKE LIGHT SWITCH IS NOT PUTTING OUT BATTERY WHENEVER THE BRAKE PEDAL IS PUSHED DOWN. CHECK TO SEE IF BRAKE LIGHTS COME ON WHEN BRAKE PEDAL IS PUSHED DOWN. IF BRAKE LIGHTS COME ON, THEN YOU SHOULD BE ABLE TO SHIFT IT OUT OF PARK. IF NO BRAKE LIGHTS, THEN IT WON'T SHIFT OUT OF PARK. IF THIS IS THE CASE, THEN REPLACE BRAKE LIGHT SWITCH.
do not put any pressure on shift lever until brake is pushed. also lift shift lever directly up when placing into reverse.
shift lock is malfunctioning. you can bypass it there is a little "switch" on the side of your shifter for this purpose. that should help temporarily i believe there is a sensor to tell it when to shift out of park and that when this malfunctions you're stuck in park
If your 1993 Pontiac Grand Am will not shift into part, the transmission is probably seized up. The first step is ensuring the transmission fluid is not too low.
Check fuses, If brake lights do not work, transmission will not shift out of park. Brake light circuit is common to shift interlock. That's why you must step on brake to release interlock prior to shifting out of "Park" If stop lights are not working interlock will not release.
brake switch gone bad car will not shift out of park if brake goes bad
If you have to apply the brake before you shift out of park, check the fuses. If it doesn't have the interlock, rock the vehicle back and forth, if you are physically capable; if not, get a friend or neighbor to help. While rocking the vehicle, GENTLY try to move the gear shifter. It sounds as if the parking pawl has to much tension on it.BE EXTREMELY CAREFUL DOING THIS IF THE VEHICLE IS ON A GRADE
The 4.6 liter is 281 cubic inches
you have to put your foot on the break pedal, to shift out of park its a safety feature
I experienced a problem with a 84 Grand Marquis that would stall at stops. Found that the ignition switch in the steering column had separated that caused the stalling problem. Replaced the ignition switch that solved the problem.
the shift interlock cable,sounds like the problem
I know that you've probably tried this, but it seems worth mentioning: is your foot on the brake? With my '99 Taurus, I must have my foot on the break to shift out.
I am currently having the same problem with my 1988 mercury grand marquis ls colony park wagon. Your rings are bad in your engine. If you didn't also notice, when you go to step on the gas hard when you take off, you will also emit blue smoke.
Check catalytic converter--maybe plugged engine might have "jumped" time and timing chain may have to be replaced