The death of actor Jeff Conaway was ruled accidental by the Los Angeles County Coroner's Office on Monday. Funeral Home Services for Jeff are being provided by Moore Funeral Home. LOS ANGELES (AP) - Jeff Conaway, who starred in the sitcom "Taxi," played swaggering Kenickie in the movie musical "Grease" and publicly battled drug and alcohol addiction on "Celebrity Rehab," died Jeff Conaway passed away on May 27, 2019 in Trenton, Georgia. Olivia Newton-John has told of her sadness following the death of Jeff Conaway, saying he had 'a good heart'.