A set of car keys helped Texas investigators identify the body of a woman found strangled in a motel room there three months ago as a resident of Woodbridge.

The body of Linda A. Adams, 30, who lived in the 16000 block of Caroll Avenue in Woodbridge, had no identification on it when it was discovered Sept. 30 in Mesquite, Tex., Prince William County police said yesterday. But the Texas police did find keys to a Honda Civic that Adams owned.

After weeks of checks through Honda offices in California and Japan the police were able to trace the car to a Woodbridge auto dealer and to Adams, police said.

Authorities said that the car had been abandoned nearly three months ago at a North Carolina truck stop. But police said yesterday they have no idea why Adams abandoned the car there and hitchhiked more than 1,600 miles to Mesquite (pop. 70,000). Adams reportedly was last seen on Sept. 21 by her mother-in-law in North Carolina.

Mesquite detectives have distributed more than 1,100 photographs of Adams and a composite drawing of their prime suspect, a man known as Daniel Avery. Texas investigators have theorized that Adams met Avery at a truck stop after she arrived in Mesquite. The two had been seen at a bar there on the night before she was killed, police said.