Repair Tech
Honda Civic repair keeps coming back — what am I missing?
I've been having a recurring issue with a Honda Civic that keeps coming back for the same problem. The customer initially came in complaining about a rough idle and a check engine light. After running diagnostics, I replaced the spark plugs and the ignition coils, which seemed to fix the issue temporarily. However, a couple of weeks later, the car is back with the same symptoms. I double-checked my work and the codes, and everything looks okay. I'm starting to wonder if I missed something in the fuel system or if there’s an underlying issue with the ECU. Has anyone else experienced this? I've also been trying to track the job history using my shop software, but I feel like I might need to dig deeper into the fuel injectors or even check for vacuum leaks. Any advice on what I should look for or test next would be greatly appreciated!
2 Answers
It sounds like you've done a good job troubleshooting so far, but the rough idle on Civics can sometimes be elusive. I had a similar case where I replaced the ignition coils and spark plugs, but the issue persisted. It turned out to be a clogged fuel injector. I recommend checking the fuel delivery system to ensure that the injectors are functioning correctly. If you haven't already, consider cleaning or replacing them. You might also want to check the fuel filter to make sure it’s not restricting flow. I usually source my parts from a reliable vendor like RockAuto; they have competitive pricing and fast shipping. Good luck!
I can relate to your frustration! When I see repeated issues like this, I often look for electrical problems. A faulty connector or damaged wire can lead to intermittent issues that are hard to diagnose. Use a multimeter to check for proper voltage to the coils and injectors. I had success with a similar Civic by re-torquing the manifold and ensuring all gaskets were sealed properly. Sometimes, the simplest things can cause the biggest headaches. Also, keep an eye on your shop software reports to see if there are patterns in the customer complaints. It might give you insights into what to focus on next!