If you mean the K cars, they did save Chrysler---for a short while. In time they were seen for what they really were: not very good cars at all.
@EasyAce What they WERE,was exactly what they needed to be. Affordable,economical,and a good buy for the money spent.
IMHO,the one thing that hurt Chrysler more than anything in their history was the team of idiot engineers that came up with the brain fart known as "lean burn". Suddenly,you had slant 6 Valiants and Aspen stationwagons that HAD been getting over 20 MPH,getting 6 MPH and didn't have enough power to get out of the way of a bus. Lots of them running so hot in the thin air and high altitude that they would boil away the water in the radiator.
I was working at a Chrysler dealership out in Denver in 77 and bought a used 1 year old Cordoba (BEAUTIFUL cars! Comfortable,too!) with the 360 engine in it,and the damn thing never got over 8 mpg. We even put it up on the lift in the service department with the engine running at different RPM,and walked around under it looking for gas leaks.
There were customers in their 60's who had never in their lives owned a car that wasn't a Dodge,or buying a new car that didn't come from that dealership swear off ever buying another one.
All this thanks to the Lean Burn,and if you took it off and modified the timing and adjusted the carb,you killed your warranty.