Transmission 1999 lincoln continental

Transmission model is AX4N.The reason that the car/trans only acts up after long drives is the heat.As metal components heat up,tolerances and clearances that were marginal or borderline before with moderate heat,become excessive clearances when really hot.More than likely there are internal transmission components with excessive wear.Many problematic areas inside the AX4N trans is the pump,where the oil pump driveshaft bearing wears out,the seal is torn,and hydraulic pressure falls off,common failure point in these units.The other areas are typical to all automatic transmissions,the clutch packs and bands wear and lose clearance.as well as some of the bushings inside the unit.I just rebuilt recently a trans exactly identical to your car,V8...4.6Ltr Lincoln,and it had minimal damage inside,but enough to throw the check engine light on with a Torque Convertor Clutch trouble code.The TCC was slipping excessively,and the vehicle computer recognized this,and illuminated the CEL.Chances are good that the damage inside your trans will be minimal,but now is the time to consider rebuilding it and restoring all the hydraulic circuits integrity,and resetting all the clutch pack and band clearances with new clutches,steels,and bands.A remanufactured torque convertor should also be installed along with rebuilding the trans.Be careful as to who does the work on the trans should you decide to rebuild it,as some people's definition of a rebuild doesn't quite qualify as anything more than a patch/repair job.A complete rebuild consists of tearing the trans completely down,loading it into a parts cleaner,and thoroughly cleaning it.From this point,the rebuild begins,including a banner overhaul kit,new steels,bands,seals,thrust washers as required,Electronic Pressure Control solenoid,all new bushings,set clutch pack clearances to factory specifications,along with setting unit endplay,and a remanufactured torque convertor.Good luck.

Early 2008 i had my 2000 Continental transmission with 100k miles worked on by aamco. initial work done was new pan and remanufactured torque converter and new seals front & rear. however there still was a leak i was not happy with. after weeks of going back to that aamco i ended up calling corporate and had the job redone at a different aamco in the area that was well known for years as doing good work.
this aamco let me know i must have hit a hard surface to knock the casings from being alined. (i hope that made sense). which i did few months earlier trying to avoid a accident and ended up in a ditch. the second aamco got me back up n running and told me they did a overhaul and should be good to go but may or may not need a rebuilt. now my 2000 lincoln continental 12 months later and 20k miles i am experiencing a delayed catch when reversing and went for oil change and was told there was some trans fluid slowly leaking.. what should i do.

Common problem with my continental after 150K miles -- clutch in torque converter is beginning to disintegrate - better replacement part is available via AAMCO -- In meanwhile seafoam transmission conditioning fluid may help you get home from 500 miles away