I recently put a new coil pack and plugs and wires on her and she was running amazingly and then one night on my way to work it started loosing power on hills and take offs. I got to work and shut her off and worked my shift 15 mins before my shift ended I went out and started the car and it started fine. Went back and about 10 mins later the car backfired and shut off and since then would not restart. Could it be the coil pack went bad or is it something worse?
What makes this problem better or worse?
Happened after warming up
How long has your 2004 Chevrolet Aveo had this problem?
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Hi, my name is Devin. I'm an auto repair expert with the Car Genius team at RepairPal. I'm so sorry to hear you’re having trouble with your vehicle.
It sounds like your Aveo could be dealing with a few different issues. Since it started losing power on hills and during take-offs, then backfired and shut off, it could be related to the fuel, ignition, or timing systems. Backfiring occurs when unburned fuel ignites in the exhaust or intake system. Several factors can cause this: a rich fuel mixture, meaning too much fuel and not enough air; timing issues, where the spark plug fires at the wrong time; or issues with the ignition system, such as a faulty spark plug, coil pack, or distributor. While it's possible the new coil pack might be faulty, I do not believe it is the most likely culprit. I recommend having a professional run a diagnostic test to determine the exact cause and get your Aveo back on the road.
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