{"nhtsa_id":637550,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-12-02","date":"2002-04-01","document_id":"15817","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHICLES EQUIPPED WITH BI-FUEL (CNG/LPG) ALTERNATE FUEL ENGINES MAY EXHIBIT HARD / NO START, RUNS ROUGH OR MISSES AFTER STARTING, AND OR HESITATION ON ACCELERATION WHEN OPERATED IN THE BI-FUEL MODE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/637550","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":1998,"year_to":2002,"match":"exact","vehicle_ids":["1998_ford_f-150","1999_ford_f-150","2000_ford_f-150","2001_ford_f-150","2002_ford_f-150"]}],"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":[]}