Oldsmobile 98 Problems

Engine Control Module (ECM) can fail on Oldsmobile 98

Problem Description and Possible Solution

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

(21 people reported this problem)

Oldsmobile 98 Vehicles With This Problem

RepairPal Verified
Average mileage: 128,000 (100,000–144,000)
6 model years affected: 1990, 1991, 1992, 1993, more1994, 1995
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Viewing 1-5 of 5 comments
Haven't had it checked yet. Problem just started last night. Service-Engine-Soon light came on. Then periodic stalling of the engine. The light would go off for about 10 minutes of driving then come on again. I drove for about 15 miles (in-town driving, not freeway). The engine only stalled about 4 times during that 15-mile drive. The stall seemed to happen when slowing down to stop at an intersection or would stall immediately after coming to a complete stop. In every case of a stall, the engine would easily start up again with the turn of the key in the ignition.
Stalling as described previously. Have replaced ecm 2 times. Car runs normally for 4 to 6 weeks and problems begin again. Getting ready to replace a 3rd time under warranty.
Keeps revving up at start and keeps climbing up, speedometer quit working shortly after revving problem started
engine dies after about 10 miles, then will restart and m/gal restarts at 0
Then fast idles, and after ignition shut off, and on runs good. Generally
home by that time. .
not fixed put in coil worked for awhile, doesn't turn over, back fire at first the fan kept running, unplugged it , then plug back in.Lights in the ac spot went to 18888 heater ac defrost fan all the way up could not turn off so i unplugged it.