The University of Illinois football program was put back on probation by the NCAA for a recruiting violation. The latest penalty will run until July 1, 1989.

Illinois, which last week hired John Mackovic as football coach to replace Mike White, was put on two-year probation in 1984.

The NCAA said that while serving the previous probation, the school violated NCAA regulations in its attempt to recruit a "highly sought-after" student athlete. In 1985, a former assistant coach who also was the recruiting coordinator gave the student at least $100 to travel from his home to another city . . .

Florida State President Bernard F. Sliger said the NCAAational Collegiate Athletic Association has begun a preliminary inquiry into that school's athletic department as well . . .

On the positive side, the Minnesota men's athletic department committed no serious violations, according to an 800-page report made by the NCAA detailing its 18-month investigation in conjunction with Big Ten and university officials.

The report was presented to the NCAA infractions committee in Orlando, Fla. The university is expected to be notified of possible penalties within two weeks . . .

The FBI said it has entered the investigation of a death threat that prompted University of Cincinnati basketball Coach Tony Yates to stay away from Wednesday night's game in St. Louis.

The caller who telephoned the threat to Yates' office at the University of Cincinnati on Tuesday also made racist comments about Yates, who is black, university spokesman Greg Hand said.

Terence Dinan, the FBI's Cincinnati agent-in-charge, said he dispatched agents to the Cincinnati campus for a preliminary investigation to determine whether there had been violations of federal law that would warrant FBI involvement . . .

Joe Gottschalk, Navy's freshman guard who had been playing well for the Midshipmen in recent games, broke his right thumb in Wednesday's overtime victory over William and Mary and will be out three weeks. He averaged 7.6 points off the bench.