Adam-12 S01E16 - Log 062: Grand Theft Horse?

At roll call, officers are cautioned about phony calls related to armed robberies. Reed and Malloy try to track down a noise coming from their car when they get a call of a stolen horse. At the stables, the owner offers them the use of two horses, but reluctant to ride themselves, the officers enlist the help of two park rangers to corral the horse thief. Back on patrol, the car noise getting worse, Reed and Malloy respond to a motel where they help a distraught young woman who bought the line of a cad. After sunset, Malloy ignores a call and heads to nearby liquor stores where they find armed robbers making a getaway. Fired upon, they give chase and pull the two men from their burning car after it crashes. Talking it over afterward, Reed notices the noise is gone.