My 1997 Ford Taurus Sho transmission issue maybe?

SOURCE: operating lancer automatic transmission

Have you Had the transmission fluid checked? It sounds as if the transmission is slipping in these gears which would point to a fault within the bands. To have a problem like this repaired could cost as little as $200 or as much as $1700 depending on how much needs to be done. Was the replacement a second hand transmission? If yes then did you have a warranty period with it? Let me know and I will get back to you as i am about to seek out a manual for this.

Cheers

SOURCE: seems transmission gear shift problem

Pull the distick and smell the oil. If it's discoloured (black or dark brown) you know the transmission friction plates are burnt and needs a rebuilt.
Cheers

SOURCE: transmission error code P1750

Might be really simple - but EXPENSIVE! I had a similar fault - apparently the first planet set breaks up. Cure - a new box. Price - crippling!

Don't be tempted to skimp on the box. Get a rebuild from a reputable supplier. A s/h box will set you back around £5-600 in UK where a rebuilt (guaranteed) will be more like £1800. The thing with the cheap box is it costs about the same to fit but you don't know how good it is till it's too late! Then you're still shopping for another but you're £600 lighter!

Also, you could be buying other faults. If the speed sensor has had a problem - the box will change badly (snatching) and that will be another £250 where the expensive box will have ahad one fitted!

SOURCE: 1992 Mitsubishi Eclipse transmission slips in overdrive

well the low cost way to go first would be to try and change the trans fluids. If the problems still remains the it may be an internal problem

SOURCE: atomatic transmission won't only has second gear

Sounds like you have a solonoid out in your transmission. No simple fix for this. You will more than likely have to drop the transmission to replace solonoid.