{"nhtsa_id":41028,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-11-01","date":"1995-04-01","document_id":"9587","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM","mfr_system":null,"summary":"A KNOCKING/THUMPING NOISE MAY BE AUDIBLE IN THE PASSENGER COMPARTMENT ON SOME VEHICLES DUE TO STEAM FORMATION IN THE COOLING SYSTEM. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/41028","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"RANGER","year_from":1991,"year_to":1994,"match":"exact","vehicle_ids":["1991_ford_ranger","1992_ford_ranger","1993_ford_ranger","1994_ford_ranger"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}