Question about 1991 Mercury Grand Marquis

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Transmission service I need to due a transmission service to my 91 Grand Marquis. Original fluid, 171,000 miles. Does the torque converter have a drain plug? Any issues I need to be aware of?

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No there is no drain plug on the torque convertor , it typically holds 5 quarts of fluid at one time. While the transmission is open, check for any metal shavings on the magnet, this would indicate problems inside. make sure they change the fluid filter , before returning the transmissoin to service.

Posted on Jul 12, 2009

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1 Answer

2001 Mercury Grand Marquis the transmission torque converter doesn't have a drain plug. I want to drill a hole for a drain plug. Is there a perfect place to drill the hole ?


If it was me Id just get as much out as you can and go from there,not a hole lot in torque con. and you might be getting into something you don't want to,draining the trans will be enough to get your fluid back into good quality and changing filter,and with every trans change I put a pint of lucas with the change! good stuff!

Dec 14, 2014 | 2001 Mercury Grand Marquis

1 Answer

How to drain oil fron tranmission and tork converter


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Change the filter and fluid. This car if the transmission is original should have a torque converter drain. Drain the torque converter also,it gets almost all the fluid out of the transmission. Doing this the car will require almost 12 quarts of fluid. Worth a shot. I change mine at 25000 mile intervals.

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Put 1 quart of dextron III/mercon in a transmission that calls for mercon v what should i do.its a 1997 mercury grand marquis


1 quart probably won`t have much of a affect on the transmission as there is about 10-12 quarts in the transmission to start with.the only way to fix it is to do a transmission service and change all the fluid and the fluid in the torque converter it has a drain plug that you will have to find so you can drain it.

Jul 06, 2011 | 1997 Mercury Grand Marquis

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How do you change the transmission fluid on a 2000 Mercury Marquis?


you must drop the pan on the transmission, and I recommend draining the torque converter as well. you must rotate the engine by hand until the converter plug is visible in the access hole in the transmission. replace the filter and re-use the gasket if its the reusable factory gasket ( has hard inserts around each bolt hole) then re-fill the transmission through the filler tube on the right side of the engine compartment. be sure to use Mercon V fluid.

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1 Answer

Is the Transmission sealed, can not change the filter and fluid? Where is the radiator, is it also sealed, can water only be put in the overflow?


The transmission is not sealed in the v8 I looked up. It's bolted together. prev.gif next.gif Fluid Pan Removal & Installation To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section
  2. Raise and support the vehicle
  3. Place a drain pan under the transmission fluid pan
  4. Remove or disconnect the following:
    • Drain plug and drain the fluid
    • Shifter cable bracket NOTE: The transmission fluid pan gasket is reusable, clean and inspect for damage; if not damaged, the gasket should be reused.
    • Fluid pan and gasket
    • Transmission fluid filter
    • Clean and inspect the transmission fluid pan and magnet
    • Converter housing access plug
    • Converter drain plug
To Install:
NOTE: A new converter drain plug must be used to prevent leakage.
  1. Install or connect the following:
    • Install the converter drain plug. Torque to 89 in-lbs (10 Nm)
    • Install the converter housing access plug
  2. Lubricate the seals and install the transmission fluid filter. Torque the bolts to 89 in-lbs (10 Nm)
  3. Install the oil pan magnet in the transmission fluid pan NOTE: The transmission fluid pan gasket is reusable, clean and inspect for damage; if not damaged, the gasket should be reused.
  4. Install the transmission fluid pan and gasket and loosely install the screws.
  5. Using a crisscross sequence, torque the screws to 8 ft-lbs (11 Nm)
  6. Install the shifter cable bracket. Torque bolts to 18 ft-lbs (25 Nm)
  7. Install the drain plug. Torque to 19 ft-lbs (26 Nm) NOTE: It will be necessary to hold the drain plug (larger plug) with a wrench when removing the fluid level indicator plug.
    NOTE: Use 3/16 inch Allen key to remove the fluid level indicator plug. Remove the fluid level indicator plug.
  8. Verify the transmission fluid level
prev.gif next.gif

Jul 21, 2010 | 2001 Lincoln LS

1 Answer

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If this is a feeling like going over rumble strips then it is coming from the lock up torque converter. Usually having the fluid completely flushed and an additive such as shudderguard added will take care of the problem within 250 miles (usually sooner).Otherwise the torque converter will need to be replaced.

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4 Answers

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No other car place will touch the CVS transmission in a Ford Freestyle and most Ford dealerships are clueless on thier maintenance and repairs. On most issues that crop up the first thing they want to do is swap it out - for $4000+.

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2 Answers

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these vehicle had problems with the torque converters shuddering due to the trans fluid I would suggest a fluid change including draining the torque converter

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