Hello, I’m Aaron, one of the shop owners at PB Foreign and Domestic Car Repair in Pacific Beach, San Diego. In this story, I’d like to share a recent repair experience that not only showcases our commitment to excellent service but also provides valuable insights into addressing common car problems.
Symptom: Check engine light illuminated with codes P0300 and P0302; engine running rough.
Problem: Misfire caused by a failing ignition coil, worn spark plugs, and intake manifold gasket leaks.
Solution: Replaced ignition coil, spark plugs, and intake manifold gaskets, resolving the misfire issue and restoring engine performance.
A few weeks ago, a customer brought in their 2015 Jeep Grand Cherokee 3.6, which was experiencing a rough idle and had the dreaded check engine light on. Our skilled ASE certified mechanics, Jason, quickly diagnosed the issue, revealing two trouble codes: P0300 and P0302, indicating a misfire problem. This was no ordinary misfire, and it was crucial to pinpoint the root cause.
To get to the bottom of the issue, we began by inspecting the ignition system, as misfires often stem from faulty spark plugs or ignition coils. As we suspected, one of the ignition coils was indeed failing, and the spark plugs were overdue for replacement.
But the complications didn’t end there. Our thorough examination revealed evidence of a vacuum leak, with worn intake manifold gaskets compromising the air-fuel mixture and exacerbating the misfire problem.
With a clear understanding of the issues at hand, we contacted the customer to discuss our findings and secure approval for the necessary repairs. The customer recognized the importance of addressing these problems promptly to prevent further damage to their Jeep.
Once we received the green light, we swiftly ordered the essential components: a new ignition coil, spark plugs, and intake manifold gaskets. Thanks to our dependable suppliers, the parts arrived promptly, allowing us to maintain our commitment to delivering efficient service.
As soon as the parts were on hand, our mechanics went to work. We began by replacing the malfunctioning ignition coil and spark plugs, resulting in a noticeable improvement in the engine’s performance and a reduction in the misfire issue. Next, we meticulously installed the fresh intake manifold gaskets, ensuring an airtight seal to prevent future leaks.
After completing all the necessary repairs, we ran another diagnostic check to confirm that the problem had been resolved. The troublesome P0300 and P0302 trouble codes were nowhere to be found, and the engine ran seamlessly. To further validate our work, we conducted a comprehensive test drive to ensure the Jeep was in peak condition.
When the customer returned to pick up their Jeep, they were delighted with the results. It was back to running smoothly, and the check engine light was no longer a source of concern. We provided them with a detailed overview of the work performed and shared valuable tips on regular maintenance to prevent future issues.
At PB Foreign and Domestic Car Repair, our dedication extends beyond fixing cars. We believe in educating our customers about common car problems and empowering them to make informed decisions. Our team of ASE certified mechanics is always prepared to tackle any challenge, ensuring that our clients drive away satisfied with their vehicles in excellent condition.
If you’re facing car troubles or require routine maintenance, we’re here to assist you. Visit us at PB Foreign and Domestic Car Repair in Pacific Beach, San Diego. Your vehicle’s well-being is our top priority, and we’re committed to keeping you on the road with a smooth and safe ride. Contact us online to schedule an appointment or call us at 1-858-270-1142. Safe driving, everyone!