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Lincoln LS Transmission Problems



  • akirbyakirby Posts: 8,062
    If you lost gears then that's pretty serious. Sounds like an internal problem. Find a good Ford or Lincoln mechanic that knows that transmission (same one used in the Explorer).
  • I agree with akirby that it sounds like an internal problem...

    The symptoms are somewhat odd given how the transmission is designed (see below).

    For 1, 2, 3 to work requires that the front 2-speed gear box actuator is functioning and that the middle 3-speed gear box is shifting between 3.25:1 and 1.53:1. If the 3-speed can't switch to gear-3 but remains stuck in gear-2 (1.53:1) then D4 will be 3rd but D5 should shift to an unused gear ratio of 1.1475:1 which would be noticably faster than D4.

    Reverse is a third gear box at the end with its own actuator which doesn't seem to be functioning.

    It may be that the actuator pump isn't generating enough pressure to operate the 3-speed gear box fully (it can switch between gear-1 and gear-2 but not to gear-3) or to operate the reverse actuator.

    Good luck....

    Transmission description by the design engineer from an old forum page:
    #604 of 677: LS *is* a 5 speed transmission (mkovalsk) Tue 28 Dec '99 (05:58 AM)

    The LS is a 5 speed transmission. It is in thesame "family" as the Explorer 5 speed. The new transmission, called the 5R55N, was designed from the Explorer trans, but 95% of the parts are new.

    The torque converter only locks in 4th and 5th, except with the sport package. In the sport it can also lock in 3rd gear when shifting manually.

    Second gear is not achieved by locking the torque converter in first gear. It is achieved by overdriving first gear. Fifth gear is not created by locking the torque converter in fourth gear. It is overdriven fourth gear.

    Think of this as two transmissions in one case. In front is a two speed trans, with ratios of 1:1 and 0.75:1. This is called the overdrive unit. Behind this is a three speed transmission.

    In first gear the overdrive unit is at 1:1 ratio. The rear gearset is at 3.25:1. This gives an overall ratio of 3.25:1.

    For second gear, the overdrive shifts to 0.75:1 and the rear unit stays at 3.25:1. 3.25*0.75 = 2.44:1.

    For third gear the overdrive shifts back to 1:1 and the rear gearset shifts to 1.53:1. 1*1.53=1.53, which is the third gear ratio.

    For fourth gear, the rear set shifts to 1:1 ratio, and the front stays at 1:1.

    For fifth, the overdrive shifts to 0.75:1 and the rear stays at 1:1.. 0.75*1=0.75, which is fifth, or overdrive ratio.

    I don't know what else to call this besides a five speed. There are five distinct ratios, plus converter lock.
  • cdnpinheadcdnpinhead Forest Lakes, AZPosts: 4,330
    minority was drawn to the Lincoln LS because it was originally offered with a transmission that doesn't have these problems.

    It's called a manual. It was 48 years or so between the '51 and '00 Lincolns that had manual transmissions. I'm guessing it'll be at least 48 before there's another one.
  • akirbyakirby Posts: 8,062
    Right on cue Steve..... ;)
  • cdnpinheadcdnpinhead Forest Lakes, AZPosts: 4,330
    it was for old time's sake.

    I've let dozens/hundreds of these go by. :D
  • To anyone who knows anything about cars. I have a 2001 Lincoln LS, we noticed the transmission was "slipping". Well the fluid was low, so we bought the recommended type, Mercron V ATF, & added 2 quarts (it was still low) but we drove off to get some more & my transmission went completely out! The engine will rev, but there is no movement...However there is reverse! Guessing whoever serviced it last put the wrong kind in it, but is it fixable or does it have to be replaced all together?
  • akirbyakirby Posts: 8,062
    No way to tell until you take it out and get it diagnosed. Doesn't sound promising though.
  • I was told that it would have to be rebuilt... $900 - $1,200 is the 1st estimate! I’m totally ticked :mad: Luckily the dealer where we purchased the car did some not so legal things upon our initial purchase, so they’re kind of forced to help us. Who knows to what extent they will help though! :(
  • toomanyfumestoomanyfumes S.E. Wisconsin Posts: 1,019
    That actually sounds cheap for a tranny rebuild.
    2012 Mustang Premium, 2013 Lincoln MKX Elite, 2007 Mitsubishi Outlander.
  • cdnpinheadcdnpinhead Forest Lakes, AZPosts: 4,330
    that adding a couple of quarts of clean fluid, with fresh solvents & additives, was enough to dislodge or suspend some crud that found its way into one of the dozens of solenoid valves and other tightly-toleranced goodies that are all over the marvel of technology that is today's computer-controlled automatic transmission.

    Once it's rebuilt, have the fluid changed out (completely, with an exchange machine) every 50-60K miles.

    Good luck.
  • I have a 2005 LS and I experienced the same problem. The tranny slips and I have been stuck halfway through a turn many times with an engine that simply revs. It seemed to slip more when I'd go from 2nd to 3rd gear, either accelerating or deaccelerating. I ran out on my warranty, but took it in to see if I could extend my warranty and if they would catch the slip during the test drive. Luck was on my side and the ole LS held up during the test drive. Went through the paperwork, signed up for a 2yr full warranty at $1,900 over 24 months. Figured the tranny was worth that alone, now the car is covered and I'm...kinda happy. Can't wait to be right side up on the darn thing. I only have 32,000 miles at 5 yrs - and the stinking tranny goes!?!?!? Plus the reset/fuel/setup/status button got pushed in! :mad:">
  • toomanyfumestoomanyfumes S.E. Wisconsin Posts: 1,019
    I think that is an unusual problem on this vehicle. The transmission's seem to be pretty durable except for some computer software issues on early cars.
    2012 Mustang Premium, 2013 Lincoln MKX Elite, 2007 Mitsubishi Outlander.
  • akirbyakirby Posts: 8,062
    The later cars had either solenoid or valve body problems - I forget which. But it's not an internal problem and doesn't require a new transmission.
  • akirbyakirby Posts: 8,062
    Damage is probably already done, but I would use a Lincoln dealer not AAMCO. Could just be the valve body which was a common problem. The Lincoln dealer would be aware of this. The AAMCO guys will probably want to rebuild the internals which may not be necessary.
  • i had a check transmission code and a E on my dashboard panel last week while driving home.i stopped and shut down and then restarted and drove home.i took it in to amaco today and they said that the transmission needs all the soft parts and some hard parts but didn't say what for a total of 2500.00.i then took it to the lincoln dealer and he put it on his machine and said 2 codes came was a p0775 which is a solonoid b pressure control malfunction and a p0735 which read transmission gear 5 ratio is incorrect.but he says they don't do transmission you think amaco is being fair?thanks for any help.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 62,034
    It's hard to say what's going on exactly but there are diagnostic tests that can help to pinpoint the issues. The codes do indicate some kind of internal distress however, but how much and how bad---well codes don't tell you that.

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  • akirbyakirby Posts: 8,062
    IIRC this is usually a bad valve body. If you can find a lincoln dealer that does transmissions they've probably seen a lot of these. At least call and get an estimate on a valve body replacement for comparison. $2500 sounds high.
  • hey man my car does the same thing, did u ever get it fix and if u did wut had to be done to it just wondering i wood like to have my car running good
  • So this is the story guys. I just got this car about three months ago. The car wasn’t making any noise it was running good. Then I changed the oil and for some reason the car started to make this weird noise like the flywheel was going out.(The next day after oil change I was coming home from work racing a GTI & a Porsche) Sooo anyways when the clutch was engaged the noise would happen. Then the noise just went away! Then I was driving with my friend and I was backing up into a parking spot. As I was backing up it sounded like I hit something. I got out of my car and looked, nothing was there. Sooo I got back into my car and turned it over w it in reverse and it wouldn’t go. I had to push my car all the way back home………Anyone have an idea of what I can do to check to see what the problem is……….I think I should get a new clutch…Maybe a stage 3 clutch w everything………….

    Thanks for your time

    Ps. Now if the car is in neutral and I let out the clutch it will just stalls. It only wants to go into reverse and 1st gear………….
  • Thanks for the info.. unfortunately the dealer is not going to do anything! :cry: I'll just have to have it rebuilt come the 1st of the year or so! Don't ever buy anything from Corporate Auto Brokers in Cumming, GA Every car they've ever sold to anyone I know has been a lemon :lemon: !
  • Only sometimes when i shift to reverse it takes 1 to 3 seconds to engage other times it's fine. Also somtimes when shifting from revers to park it makes a rough click noise. shifting from reverse into drive works fine, and select shift works fine. also i hear grinding pulley noise when idling sounds like its coming from the transmission when under the car. Could this be old transmission fluid or worn seals? :confuse:
  • My 2000 ls was hit in the rear while it was parked. The very next day, I backed the car out of the drive and it hestiated before going into drive. As I drove down the street, the steering seem to be getting tight. I look in my dash and my speed odometer dropped to -0-, the Trip mileage went blank, the brake light came on. I took it to Auto Zone for a diagnostic and it gave a code of P1633. Some type of electrical problem that stated low voltage to battery. Battery disconnect or something to this effect. I then took it on to the dealer and asked that they diagnose what was causing the electrical problems and was told that I needed coils, spark plugs, and a valve cover gasket. They never said anything about the electrical problem, or the battery issued or low voltage to the battery.

    How in the world can replacing coil paks, spark plugs and a valve cover gasket fix an electrical problem.

    Does anyone know if the transmission have an electrical pump or something thats indicating that my tranny is about to go out?
  • jayyy_kjayyy_k Posts: 5
    the classic question. does anybody know what this means? i took my 05 LS to the lincoln dealership the first time my car went into fail safe mode when i was accelerating, so they charged me $600 for a new throttle body, but guess what that wasn't it. same code same problem but this time i dont have another $600 to guess with. If anybody can help or point me in the right direction your going to heaven
  • jtw72jtw72 Posts: 4
    I just had the same issue on my 2004 LSV8 this past year. They charged me $475 for a throttle body. I said BS...It's not the throttle body. They insisted it was. 24 hours after having a new throttle body installed, it went back into ETC failsafe mode. I went back in and they said it was the ABS sensor on the left rear that was the problem, and that would cost another $300 for parts and labor. I said BS. I demanded that they do the job for free, because it was clear that the ABS sensor was sending a code to the throttle body that caused it to fail again. We came to an agreement at a Ford/Lincoln dealer that they would do the work for $50 more. I agreed. They throttle body was replaced under a one year part warranty for no charge, and for a week now I have had NO issues. I signed up on this board last year because I was tired of the dealers nickle and diming me to death. At least for me, it was completely the ABS sensor, NOT the throttle body. Good luck!
  • Had similar issue with my 2001 LS (same codes, no 4th or 5th gear). Also had a repair shop tell me I needed a new tranny (and would install for $3500). After some internet research, I bought a $6 spring over the net (Sonnax part #56947J-S1, "Spring, 4-3 pre-stroke valve" for transmission model 5R55N) and had a local trans shop install it, completely fixing the problem - the original spring had broken. Total cost, including new trans filter and fluid - $445.
  • My car is currantly at the Auto Shop. My cars gas tank got punctured. So the machanic replaced it. Now he says that it wont start. It turns though. He says we now need to replace the whole new computer system from Lincoln. Does that sound correct? Any ideas on what to do?

    Thank You.
  • I find it hard to believe that a punctured tank causes the computer to fail. Unless he shorted it out while removing the fuel pump or some such thing.
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