Edward C. Buss, who figured in a controversy last summer that focused on his then-roommate, former Fairfax County school psychologist Arthur S. Pomerantz, pleaded guilty in Fairfax County Circuit Court yesterday to engaging in sexual acts with two teen-aged boys.

Buss, 42, who could be sentenced to up to 10 years in prison, pleaded guilty to two counts of statutory sodomy with the boys, ages 13 and 14, during incidents last June 12 and July 11, according to Assistant Commonwealth's Attorney Corinne J. Magee. Both incidents occurred at the Falls Church apartment where Buss and Pomerantz, 46, lived until last year.

Buss is a computer technician for an Arlington firm.

Pomerantz, who resigned his position with the Fairfax schools in 1984 after allegations of sexual misconduct, also has been charged in incidents with the two boys, although he was not present at the time of Buss' offenses, Magee said.

A charge of forcible sodomy against Buss stemming from an alleged sex act with a 12-year-old boy on May 7, 1983, which came to light during the investigation of the incidents last spring, has been continued to Feb. 10, Magee said.

Pomerantz's case generated controversy last year because he was allowed to remain a counselor in Fairfax schools after being implicated, although never charged, in sexual acts with boys in 1981 in Prince William County.

Buss' attorney, Peter D. Greenspun, said yesterday that publicity has unfairly linked his client with Pomerantz. "They each had their own relationship with these fellows," he said. "Buss is getting charged with being Pomerantz's roommate, and it's unfair to tie the two cases together."

"This was not a [sex] ring or a conspiratorial thing, or they would have been charged as codefendants."

Buss and Pomerantz came to the attention of Fairfax County authorities because a neighbor reported that she saw unusual numbers of adolescent boys coming and going from their apartment, Magee said.

While executing a search warrant, Fairfax police found quantities of pornographic books and movies, most of it heterosexual in nature.

Magee said that Buss befriended youths, and sought to serve as a father figure. "He was the 'neighborhood friend' of the boys," Magee said. "They'd come over and use the pool and play games."