{"nhtsa_id":603536,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-02-24","date":"1998-04-01","document_id":"982474","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHICLES WITH THE 4.2L ENGINE MAY EXHIBIT A VIBRATION OR BOOM, OFF IDLE BETWEEN 870-900 RPMS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/603536","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"E-150","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_ford_e-150","1998_ford_e-150"]},{"make":"FORD","model":"E-250","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_ford_e-250","1998_ford_e-250"]}],"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":[]}