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Engine Control Module (ECM) can fail on Buick Riviera

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 151,500 (126,000–188,000)
4 model years affected: 1990, 1991, 1992, 1995
13 people reported this problem
Comments
Viewing 1 - 2 of 2 comments
Instrument panel cluster goes on and off. First thing effected rpm, when it goes off the air conditioner won't blow cold. Car feels like gonna stall when stop. I did computer check. It said cluster, ECM, mass airflow sensor. I can't afford to replace all three at once!!!! Which one should I replace first?
Engine shuts down when water temp gauge goes a hair over 170 degrees. The gauge ranges from 100-280 degrees. But a red light comes on at about 171 and engine quits. Yet when I feel hood of car it is cool. I get a little steam out of radiator but not much immediately after shut down. I can open it bare handed. I do not have a "fix" as of yet.