{"nhtsa_id":612830,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-12","date":"2000-01-01","document_id":"13814","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT A THUMP NOISE FROM THE A/C SYSTEM APPROXIMATELY 5-10 SECONDS AFTER INITIAL A/C COMPRESSOR ENGAGEMENT. *MJS","document":null,"url":"https://open.wenmarpro.com/bulletins/612830","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"CROWN VICTORIA","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_ford_crown-victoria","2000_ford_crown-victoria"]},{"make":"FORD","model":"GRAND MARQUIS","year_from":1999,"year_to":2000,"match":null,"vehicle_ids":[]}],"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":[]}