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#1
08-27-2004, 02:03 PM
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1991 Grand Marquis
not sure if i have a problem or not! shifting in od bout 45-50 mph seems to be little bit of jerking is this normal for mercury with overdrive?also this vehicle has 140,000 miles on it,runs smooth in just regular drive.
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#2
09-19-2004, 11:03 AM
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Re: 1991 Grand Marquis
Mine is the same. If giving some gas, just before it might shift down from 4 to 3 it shudders. Has a little lurch from 3 to 4 also. I'm also at 140K, I'm not sure but I think some seal in the trans has weakened. For the 3-4 shift, I let off the gas for a sec, and for the 4-3, it's usually a hill or mountain or something, so I just manually go to 3rd until the top. (I know, what's the purpose of auto trans, etc etc...) Mine's the same, if left in 3rd it's always very smooth.
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