{"source":"nhtsa","country":"us","campaign":"91V177000","date":"1991-10-15","owner_notified":"1991-11-22","manufacturer":"FREIGHTLINER CORPORATION","component":"VEHICLE SPEED CONTROL:SPRINGS","summary":"THE HOOK SIZE OF THE THROTTLE RETURN SPRING IS TOO SMALL RESULTING IN A TIGHT FIT AROUND THE ANCHOR NUT, CAUSING THE THROTTLE RETURN SPRING TO BREAK PREMATURELY.","consequence":"IF THE THROTTLE SPRING BREAKS, THE ENGINE WILL RETURN TO IDLE SPEED, WHICH MAY CAUSE A HIGHWAY HAZARD AND RESULT IN A VEHICLE CRASH.","remedy":"INSTALL THROTTLE RETURN SPRINGS WITH LARGER HOOKS.","notes":"SYSTEM: THROTTLE RETURN SPRINGS.VEHICLE DESCRIPTION: HEAVY TRUCKS WITH CUMMINS B SERIES ENGINES.","mfr_campaign":null,"part_number":null,"units":420,"completion":null,"do_not_drive":false,"park_outside":false,"notification":null,"french":null,"vehicles":[{"year":1991,"make":"FREIGHTLINER","model":"FL-70","vehicle_id":"1991_freightliner_fl70","match":"exact","built_from":"1991-05-01","built_to":"1991-09-01"},{"year":1991,"make":"FREIGHTLINER","model":"FL60","vehicle_id":"1991_freightliner_fl60","match":"exact","built_from":"1991-05-01","built_to":"1991-09-01"},{"year":1991,"make":"FREIGHTLINER","model":"FL80","vehicle_id":"1991_freightliner_fl80","match":"exact","built_from":"1991-05-01","built_to":"1991-09-01"}],"may_apply":true,"as_of":"2026-10-19","lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null},"attribution":[],"url":"https://open.wenmarpro.com/recalls/nhtsa/91V177000"}