Covers all models of Buick Electra, Park Avenue and Oldsmobile Ninety-Eight.The C3I system uses the same basic Electronic Spark Timing (EST) circuits as the older distributor-type ignition. The ECM/PCM uses the EST ... To control spark knock, and to use maximum spark advance to improve driveability and fuel economy, an Electronic Spark Control (ESC) system is used. This system is consists of a knock sensor and an ESC module (part of Mem-Cal in the ECM). The ECM/PCManbsp;...
|Title||:||Chilton's General Motors Electra/Park Avenue/Ninety-Eight 1990-93 Repair Manual|
|Author||:||Chilton Automotive Books, Kerry A. Freeman, The Nichols/Chilton|
|Publisher||:||Chilton Book Company - 1994-04-01|