Oh, dude, the transmission dipstick on a Mercury Grand Marquis is located towards the back of the engine bay. It's usually a bright color, like yellow or red, because, you know, it wants to stand out in the crowd of car parts. Just look for a long, thin stick that's like, "Hey, I'm the transmission dipstick, come check me out!"
Rear of engine near firewall.
On a 1999 Mercury Grand Marquis : The automatic transmission fluid level dipstick is in the engine compartment , near the firewall , towards the passenger side of the engine
On a 1989 Mercury Grand Marquis : The automatic transmission fluid level dipstick should be in the engine compartment , near the firewall ( the metal wall that divides the engine compartment from the passenger compartment ) just towards the passenger side of the vehicle ( where the rear of the engine connects to the transmission )
Look at the back of the eng. by the firewall on the passengers side, it should say TRANS on the handle
Your 1996 Mercury Grand Marquis may need a new transmission or something as simple as transmission fluid.
on the transmission
should be drivers side, near valve cover.
Mercury Grand Marquis was created in 1983.
I was not aware that the Grand Marquis came in a manual Transmission! If it was an Automatic Transmission I would say take it to a Transmission Shop and have it looked at.
According to the 1996 Mercury Grand Marquis Owner Guide : With engine oil filter change : *( 5 quarts ) * engine oil dipstick is used to determine the fill amount
Remove the transmission and take it off.
Physically, yes. It would be best to consult an interchange reference to know if the wiring and programming are compatible.