We changed the transmission modular and it still acts like it don't want to take gear

"Like everyone suggested" is not a good diagnostic process. You'll need to have a proper diagnostic test performed by a skilled technician with experience with Chrysler products of this vintage, along with needed test equipment. If you're not engaging gears, it's likely that you have an internal hydraulic or mechanical concern to your transmission which will require major repairs. www.repairpal.com/repair-shops