Eldorado V8-350 5.7L DSL (1984)
PROM - Programmable Read Only Memory: Technical Service Bulletins
EGR Valve - PROM Incompatibility
Bulletin No. T 85-10
File In Group
6C
Number
86
Date
Sept. '84
SUBJECT:
EGR VALVE - PROM INCOMPATIBILITY
MODELS AFFECTED: 1984 ELDORADO AND SEVILLE WITH FEDERAL EMISSION SYSTEMS
A production change was made affecting the PROM and EGR valve calibrations on 1984 Federal Eldorados and Sevilles (excluding "E" convertible) at
the following breakpoints:
Eldorado
-
622748
Seville
-
811864
Since the PROM is matched to the EGR valve calibration and the first generation PROM's are no longer available, a PROM replacement will necessitate
replacement of the EGR valve on pre-breakpoint cars.