In this Tech Tip Short, Erik Screeden, technical and multimedia director for Motor Age, talks about the growing trend of ignition coil set replacement, especially for coil on plug ignition systems. As vehicles age — particularly those past 80,000 to 100,000 miles — failing ignition coils become more common, often triggering issues like a P0300 random misfire diagnosis. Screeden explains how coil failure is rarely an isolated event, detailing how high-mileage ignition system maintenance can prevent imbalances in spark output and drivability concerns.
With labor-intensive coil access on many vehicles, replacing all coils at once is becoming industry best practice — much like with fuel injectors. Walker ThunderSpark ignition coils are designed to simplify the job and improve long-term performance. Watch the full video to better understand coil behavior, performance issues, and smarter service decisions.
Erik Screeden is the Technical and Multimedia Content Director for the Vehicle Repair Group. He has been in the automotive industry for over 24 years. During that time, Screeden was a technician. He started out at a Ford dealership and continued to several independent repair facilities as well as spent time in the specialty aftermarket where he had the opportunity to work at a GM-specific performance shop. After his time as a technician came to an end, Screeden transitioned into a role providing scan diagnostic and J2534 tool support. He was then able to parlay his experience as a technician and a support specialist and use that in several technical sales roles.
