{"nhtsa_id":614091,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-09-28","date":"2000-07-25","document_id":"00059","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"EXPERIENCING A THUMP AS THE IGNITION SWITCH IS RELEASED FROM THE START POSITION OR AS THE ENGINE STARTS. THIS NOISE SOUNDS SIMILAR TO A RUBBER MALLET STRIKING THE FRAME AND OCCURS ONLY ON A COLD START (THE VEHICLE HAS BEEN SITTING FOR SOME TIME, USUALLY OVERNIGHT). THE VACCUM-ACTUATED REAR ENGINE MOUNT DOES NOT WORK PROPERLY BECAUSE OF INSUFFICIENT INTAKE MANIFOLD VACUUM AT START-UP. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/614091","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HONDA","model":"ACCORD","year_from":1998,"year_to":2000,"match":"exact","vehicle_ids":["1998_honda_accord","1999_honda_accord","2000_honda_accord"]}],"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":[]}