My grand marquis (98) has a hard time shifting or slips around 2 an 3 gear an at same time when cold runs fine but warmed feels heavy
20

Asked by storre Dec 16, 2015 at 10:26 PM about the 1998 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

7 Answers
1,735

sheriffstech answered 8 years ago

Most likely the clutch pack in the trans are worn out. If the fluid is burned you could have a qualified technician flush the transmission with new fluid to see if that helps.

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storre answered 8 years ago

Well the tran fluid has been replaced an didn't help.

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1,735

sheriffstech answered 8 years ago

Trans solenoids usually fail at any temp. A good transmission can diagnose it for you at a reasonable cost. But i suspect it will need rebuilding.

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5,325

Trippmeister answered 8 years ago

It's probably shot, but try Lucas transmission additive, just in case it's sticky valves. I've seen miracles happen.

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20

storre answered 8 years ago

I've put some before. After the first change. I put the entire bottle. An rest with tran fluid.

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