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1993 Buick Century Engine Control Module (ECM) Can Fail

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

Affected Model Years

This issue affects Buick Century model years 1990, 1991, 1992, 1993, 1994, 1999, 2001, 2002, 2003, .

19 people reported this problem

  • 1993 170,000 Miles
    Car dies when up to running temp. Then won't start. Changed coil packs and still dies.
  • 1993 76,000 Miles
    ecu module code comes up, engine rough starting, bad idle, bad shifting, runs poorly, overheats.
  • 1993 60,000 Miles
    Engine light has been on for a few months. Replaced O2 pressure sensor to no avail. Took to shop, diagnosed as either bad wiring harness or bad ecm. Likely ecm due to the intermittent electric output. Haven't fixed. Too expensive for the retail price of the car. Any one want to buy it?
  • 1993 67,000 Miles
    Engine not idleing probably after warm up
  • 1993 82,599 Miles
    trying too fix now

Buick Century 1993 Common Problems