Question about 2000 Mercury Grand Marquis

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2000 Mercury Grand Marquis

Transmission rear seal to drive shaft is leaking after replacement. Do thet make a heavy duty double lipped seal due to wear on driveshaft ?. Any suggestions ?

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I was given an solution by emissionwiz from the fixya site.


Posted on Nov 30, 2008


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Posted on Jan 02, 2017


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My 95 mercury grand Marquis is leaking transmission fluid got the transmission fluid gasket replaced but it's still leaking what else could it be.

Hello , You could have a leak at the transmission dip stick tube o-ring, the front pump gasket, the torque converter seal , the transmission output shaft seal or the transmission oil cooler lines. I suggest you put the car on a lift to make it easier to see where the leak is coming from.

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What has been done so far?

Did you go on a road test --you driving
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If your rear wheel overheats due to a brake problem, should the rear axel seal be replaced as well?

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At issue is wear. If the seals leak, there is typically bushing wear that allows the shaft to have excessive side play. You could change the seals, but it will start leaking again, soon. Get a rebuilt box and you will be much happier, longer.

Apr 10, 2011 | 2000 Mercury Grand Marquis

1 Answer

Leak around shaft and verry heavy after long drive

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Jan 21, 2011 | Daihatsu Rocky Cars & Trucks

1 Answer

I have 2000 grand marquis and the rearend shaft that connects to driveshaft is very loose, making a terrible roaring. How do i remove this shaft to replace it?

When you take off the drive shaft, I believe you will reveal the large nut that hold the tail piece on. It has a cotter pin. Remove the nut, and it will slide right out. Then you need a special puller that has fingers that press out ward, hook the bushing, and then extract it. But this could also be an actual bearing I suppose. After tapping the new one in, put in a new seal, and top up the gear oil that you lost when the old seal went out.

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You will have to remove the transmission.that would include removing drive shaft ,possibly exhaust.

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Place vehicle on Jack stands, remove drive-shaft, remove old seal with a Seal Puller, place lubricant on inner lip of new seal, install new Seal carefully & do not damage the Output Shaft of Transmission with hammer etc. , reinstall Drive-shaft, lower vehicle, check fluid level, road test vehicle

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1 Answer

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No clamp, it sounds like it is just a bad seal.
Just remove the drive shaft and pry out the old one and tap in a new one. very easy on those cars. juts make sure you put some tran fluid on the rubber part of the seal before installing the drive shaft or it can tear it.

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1 Answer

Leaking Rear Transmission Seal

Did you use a motorcraft seal? aftermarket seals are not as good, the factory seal is double lipped as far as I remember.

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