The team finished in 2nd place and won the following season but lost the promotion play-off against Olimpia Râmnicu Sărat, the winner of the Buzău County Championship, 0–1 on aggregate.
The following season, Viitorul achieved promotion to Divizia B, finishing in 1st place, tied on points with Petrolul Moinești but with a better goal difference.
The squad during this period included players such as Dumitru, Renghel, Iolea, V. Grigoraș, Dan Petraru, Rusu, Viorel Țonea, Angheluță, Constantin Ion, M. Grigoraș, Dorobăț, Ursulescu, Bejan, Obreja, Lupu, Străoanu, Dăniciuc, Duțu, Grigore, Mărgărit, Albu, Nicușor Frunză, Tiron, and Vasiliu.
[2] In the second division, Viitorul stayed for only one season, finishing 15th, tied on points with Constructorul Galați, and was relegated due to goal difference.
In the same year, Inter Vaslui, newly promoted from the County Championship, began to rise, sparking a great rivalry between the two teams.
In the 1991–92 season, the club finished in 4th place in Series III, the last position that allowed them to remain in the third division after the reduction in the number of teams following the reorganization of the competition system.
The 1997–98 season brought another county championship title for Sportul Municipal Vaslui, but promotion to Divizia C slipped away after a narrow 2–3 loss to Unirea Botoșani in the play-off.