1996 Intrepid Transmission Problems.

If the transmission was rebuilt 2 years ago the fluid and filter did not need to be changed. In a 1981 there are no trouble codes to retrieve so whoever suggested that is out to lunch, Unfortunatley you need to get the transmission rebuilt again, hopefully it gets done better this time. Using the dexron oil in Ford transmissions is something transmission shops do because they don't want to stock different fluids. While it's not likely that using dexron oil lead to the failure it would be better to use mercon or type F oil.

If you have fuel filter issue your engine won't start at all.

Check the transmission sensor

Try Lucus Transmission treatment. It's available at your local Autozone.

It could be the speed sensor in the transmission but sounds more like your transmission is slipping.Hopefully it is the sensor.If it ends up being the transmission is bad though,I have experienced problems with longevity/durability with rebuilt or used transmissions.Buying a new one could be between $300-$500 more,maybe more,but is well worth the money.It will probably only have a 1 year warranty,rarely a 2 year but it is there.I also know other people who have had them rebuilt and it was very disappointing considering the money involved.When I researched replacing a clutch versus a transmission,I switched to manual transmissions and have had them ever since.About 6 years ago,I got a new clutch for $500.Good luck,Greg

take too shop, that rebuilt the tranny. see if they cant do a better job. they may tell you the problem. lol.

check your fins on the radiator and your water pump also check the thermostat

LEMON LAW. look into that.

Sounds like the trans is slipping.

Service the transmission, when you have the pan off, adjust the rear band. Loosen the lock nut. Tighten the adjuster to 10 ftlbs. Loosen the adjuster 2 turns and tighten the locknut. You either have an model 500 transmission (6 cylinder engine) or model 518 (V8 engine). In both transmissions reverse is controlled exactly the same. If adjusting the band doesn't fix it, then it will need rebuilt.