{"nhtsa_id":46475,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1996-04-25","date":"1995-10-01","document_id":"95209","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SPARK KNOCK/DETONATION MAY OCCUR WHILE CRUISING OR ACCELERATING AT HIGHWAY SPEEDS W/ AMBIENT TEMPS OF 70 DEGREES F (21 DEGREES C) OR HIGHER. THIS IS DUE TO TOO MUCH SPARK ADVANCE. REPLACE THE POWERTRAIN CONTROL MODULE (PCM) W/ A REVISED PCM.","document":null,"url":"https://open.wenmarpro.com/bulletins/46475","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"RANGER","year_from":1994,"year_to":1994,"match":"exact","vehicle_ids":["1994_ford_ranger"]}],"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":[]}