Car Problem Reports

Lincoln LS 3.9L v8, 5r55s, 4th and R shift erratically when @ temp, Fine when cold

Lincoln LS Problem
9 Reports
Me Too

Model Years Affected: 2001, 2004, 2005, 2006

Drive Train Affected: 3.9L V8

Average Mileage: 88,166 mi (45,000 mi - 185,000 mi)


Very hard shifting may be noted after the transmission reaches operating temperature. Most commonly this occurs in the higher gears and reverse. Replacement of the transmission may be recommended to correct this concern.

  •  Enthusiast

    I have an odd transmission problem...

    2004 Lincoln LS -- 3.9L v8
    Engine: Jaguar AJ-8,
    Transmission: 5r55s

    What happens is the vehicle really pushes the gears hard after the vehicle has been driven for any distance further than 3 miles. Before this, everything shifts seemingly okay -- I can still feel the shifts but they're within the range of "normal".

    After being driven for about 5 miles the following occurs:

    -4th gear, whether going from 3rd-4th or 4th-3rd, will either bang violently or take 4ish seconds to shift (meanwhile it acts as if the engine is idle during this time - If I accelerate while it's in this neutral state the transmission will bang HARD when it finally hits -- I've learned to step off the gas every time it shifts from 3-4). The other gears seem to still have too much pressure but they're not NEARLY as bad as 4th is. If I'm in 4th and it goes directly to 2nd or 1st, it does NOT have this problem. Only 3-4 and 4-3.

    -Reverse has WAY too much pressure once the vehicle is up to temp. When the vehicle is cold reverse acts normally -- if vehicle is at operating temp, the vehicle bangs violently when placed in reverse. If I put my foot HARD on the brake flooring it, then hit reverse, it doesn't bang as it offsets the pressure I think? I don't know but it works okay -- if the temp is high enough this doesn't work though.

    Does anyone have any idea what the problem could be?

    Thanks a ton for any advice!

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  •  Rookie

    hard shifting between 4 and 5th gear and sometimes when going on reverse

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  • Visitor, , 62,000 mi

    Transmissions slips in 3-4 gear. Talked to my brother in law who owns a transmission shop and he says this is due to the Fact that Ford removed the reinforcement plate in this transmission and now we have this hard shifting problem which will eventually result in losing 3-4 gear and a tranny replacement!!! Says it's on all Lincoln and Mercury Grand Marquis/Crown Vics. THANK YOU FORD!!!

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  • skiddy, , 185,000 mi

    shifts hhard from 4th to 5th after reaching normal operating temp ! could it possible be the cylinoid box on the side of the transmision ?

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  • Visitor, , 75,000 mi

    Our has same problem. Thanks to an extended warranty it is now at the Deaaler getting a new transmission. The Tranny is a sealed unit and we had no leakage. Just very hard shifting, and bad for the rear differential

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  • Visitor, , 45,000 mi

    Intermittent Sticking and hard thrust into gear from accelleration and when placed in reverse.

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