{"nhtsa_id":634085,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-09-27","date":"2002-04-01","document_id":"30353","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"ENGINE HESITATION WHEN COLD, SUPERCHARGED AJ 27 ENGINES.*JB","document":null,"url":"https://open.wenmarpro.com/bulletins/634085","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JAGUAR","model":"XJ","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"JAGUAR","model":"XK","year_from":2001,"year_to":2001,"match":"exact","vehicle_ids":["2001_jaguar_xk"]}],"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":[]}