I have a 2013 Chevy Sonic with the 1.4L Turbo engine that has ~92,000 miles on it. I recently replaced the camshaft cover and installed the PCV fix kit from CruzeKits. While I was doing that, I also put in new spark plugs, gapped to .028 as recommended. The boots were stuck on the old plugs, and I destroyed them trying to get them to break free, so I bought a set of replacement boots, with springs, but did not replace the coil pack itself. Now, when I start the car, it has a rough idle and as it warms up it starts a slight jerking motion. The longer the car runs the worse the jerking gets and is pretty violent after it has been running for 10-15 minutes. It seems to accelerate fine but feels a little gutless and seems to feel worse the longer it runs. Could this be a coil pack issue, or does it sound like something worse? It wasn't doing this prior to replacing the plugs, camshaft cover, and installing the PCV fix kit. Also, it has not thrown any check engine lights, which is shocking to me because of how bad it runs. I figured it would have shown me a CEL by now and then maybe I could at least figure out what it's not happy about. Any help or suggestions would be appreciated.
Ignition Coil? Or something else? No CEL
- Thread starter pjstar35
- Start date
wildgeese2076
New member
My guess the boots don't fit properly and your not getting proper spark. I tried to replace mine with NAPA boots and they fit horribly. I returned them and bought a NGK coil pak. They aren't that expensive.
I got the Ultima Select boots because that's all that O'Reilly had. I'm going to pull the coil pack this weekend and check the springs and reinstall the boots. If that doesn't change anything I might replace the plugs with a better-quality Iridium plug. I just went with the Platinums at the time because I was in a hurry. If neither of those do the trick, I'll probably just drop the ~$100 on an NGK or Delphi coil pack from RockAuto.
CoHPhasor
Active member
No contest, for this little money, get a nice ZZP set.
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ZZP 1.4T High Voltage Coil Pack
Upgrade your 1.4T ignition coil for improved performance and economy! The gamma platform was designed as a budget solution and the factory coil does not maximize the performance of your engine. Our high voltage ignition has improved core material, tighter coil winding, and higher voltage. Being...
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