Chevrolet Cavalier Problems

Engine Control Module (ECM) can fail on Chevrolet Cavalier

Problem Description and Possible Solution

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

(13 people reported this problem)

Chevrolet Cavalier Vehicles With This Problem

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Average mileage: 104,948 (34,844–180,000)
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 2000
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Viewing 1-3 of 3 comments
It acts like it runs out of gas. I am not sure if this issue can be related to the fuel pump or the IAT Harness. Once i put gas in it it will run for about 100 miles (it did in the beginning - now it is down to 55 or so each period of time) It will simply stall while driving and refuse to start until i put more gas in it. I have been running the odometer tracker so i know how far i am going, because at first we thought it was a gauge issue. The amount of miles is getting lesser and lesser. I see the ECM and PCM are mentioned often in the webpages that i looked up the Codes that the Check engine light is throwing. I also smell gas intermittently inside my vehicle.
Transmission is shifting at higher speeds than it used to. I had two new injectors installed and it started this shifting problem after the install. I read some transmissions use vacuum pressure to decide when to shift. Could this be the problem?
When check engine light comes on. It sounds like the car is bout to shut off, it's hesitant an the car shakes. Its even cut off while driving a few times. Once the check engine light goes off the car runs perfectly fine