Transmission problems are common in this model, often as a result of a failed front pump. The pump loses its ability to create hydraulic pressure, which an automatic transmission needs to function. A sign of front pump failure can be a whine type noise.
Transmission Problems Common Due to Front Pump Failure on Mercury Grand Marquis
Average mileage: 109,896 (40,000–289,000)
20 people reported this problem
12 people shared problem details
2006 Mercury Grand Marquis49,000Visitor
MINE WILL SLIP, WHEN GOING AT AN EVEN SLOWER SPEED, TRYING TO GO UP A GEAR, IT HUNTS FOR THE GEAR FOR AWHILE AND THE ENGINE REVS, BUT CANNOT FIND THE GEAR FOR AWHILE. THEN IT FINDS THE GEAR AND IT IS FINE.
2007 Mercury Grand Marquis61,000Visitor
Whining noise in low gear, changing frequency as it slips into 2nd gear. Some of the same noise as it accelerates in 2nd gear. Not noticable after gets in 3rd and 4th. Ford dealer says it's common and not a problem as long as the car isn't loosing power. (DUH).
2006 Mercury Grand Marquis135,500Visitor
Revs up before it takes off after stopping. Shifts in and out of gears as I drive.
2005 Mercury Grand Marquis187,540Visitor
There is a whining noise and sometime it hesitate while driving.
2005 Mercury Grand MarquisVisitor
Had to pay for a new transmishion on our 2005 Merc. Grand Marquis within first year we bought from dealer in 2009. Hesitated when put in gear and slow to catch gear :( felt Taken...
1996 Mercury Grand Marquis146,000Visitor
My car whining and jerks when i push the gas pedal while driving
1997 Mercury Grand Marquis130,000Visitor
car whines only from 1st to 2nd gear, all other gear switches are fine.
2005 Mercury Grand Marquis47,000Visitor
Whine noise shifts bad
the car feel like it shifts from drive to nutural when i am driving, even when i am on the highway. I had a test done, and they said it is metal in the fluid.
2005 Mercury Grand Marquis40,000Visitor
just after buying car few years ago car whined in and out of gear then catch be ok. we got it checked but brought it back several times right after warenty exspired they told us we need a rebuilt transmishion. so upseting 3,000 later..
2006 Mercury Grand MarquisVisitor
2000 mercury marquis, 155,000 miles. Transmission Whine, fluid clean and up to level. Shifts fine has a whine all gears.
Just noted a lead from a seal in the front of the transmission case that holds the transmission...
I never heard of a Grand Marquis needing alignments? Car don't pull to left or right when I rel...
37,000 miles on car, no increase in rpms, only "slips" for about 1 second.