Knowledge of Automotive Ignition Coils

Honda Fit / Jazz Jerking Acceleration? Why Ignition Coils Are the Usual Suspect (30520-PWA-003)
 Many Honda Fit/Jazz owners experience a scary "jerking" or hesitation sensation while driving. Before you blame the CVT transmission, check your ignition coils. Here is the ultimate guide to replacing the notorious 30520-PWA-003 coils. Read more...
Engine Misfire Guide (P0300-P0306): Is It Spark Plugs or Ignition Coils?
Car shaking or idling rough? Learn the difference between bad spark plugs and failing ignition coils. Diagnose P0300-P0306 codes and save money Read more...
Ignition Coil Failure Symptoms: A Comprehensive Diagnostic Guide
Learn to identify 7 key symptoms of ignition coil failure, 4 diagnostic methods, and maintenance tips. Solve engine misfires, power loss, and high fuel consumption. Automotive-leaderstore expert solutions. Read more...
Set of four black automotive ignition coils arranged in a row on a white background
Cold start/shaking idle? The ignition coil is here to help you
This article points out that cold start troubles and shaky idles—common for European and American drivers—are often caused by a failing ignition coil, which risks safety and disrupts daily use.... Read more...

Automotive Oxygen Sensor Knowledge

Guía Definitiva: Sensor de Oxígeno y Cómo Solucionar el Código P0420 (Honda, Toyota, Nissan)

El código P0420 es el problema más común en Honda y Toyota. Muchos mecánicos te dirán que cambies el catalizador ($1000+), pero a menudo es solo un sensor de oxígeno...

Chevy Silverado & GMC Sierra O2 Sensor Guide: Bank 1 vs Bank 2 (V8 Vortec Engines)

Trucks like the Silverado, Tahoe, and Sierra rely on 4 oxygen sensors to feed their hungry V8 engines. If one fails, your gas mileage plummets. This guide explains Bank 1...

Ultimate Subaru Oxygen Sensor Guide: Forester, Outback & Impreza (P0030 / P0420 Fix)

Subaru owners often dread the P0030 or P0420 codes. The Dealer wants $350 for a sensor. Is it worth it? This guide covers the specific 5-wire sensors used in Foresters,...

The P0420 Code Ultimate Guide: Fix It Without Buying a New Catalytic Converter

The P0420 code ("Catalyst System Efficiency Below Threshold") is the most dreaded check engine light. But does it always mean your catalytic converter is dead? Often, it's just a bad...

EGT Sensors Explained: What is Code P0544 and How to Fix High Exhaust Temps

Is your car showing a "Check Injection System" error or failing DPF regeneration? The culprit might be the EGT Sensor. In this guide, we explain the P0544 code, why these...

The Ultimate Toyota Oxygen & A/F Sensor Guide: Camry, RAV4 & Tundra

Toyota owners often face a dilemma: buy the expensive Denso part or risk an aftermarket one? And what exactly is an "A/F Sensor"? This guide covers everything you need to...

P0340 vs. P0335: Why You Should Replace Camshaft and Crankshaft Sensors Together

Your engine has two eyes: the Crankshaft Sensor and the Camshaft Sensor. If one goes blind (P0335), the other (P0340) might be next. Discover why replacing both sensors at the...

39180-2B000 vs. 39265-2U100: Which Crankshaft Sensor Do You Need?

They look similar, but they are NOT interchangeable. If you are fixing a P0335 code on your Hyundai or Kia, read this guide to identify whether you need part number...
Bosch OEM automotive oxygen sensor with wiring harness and connectors on white background

The Ultimate Guide to Hyundai & Kia Starting Issues: P0335 & Crankshaft Sensors

Struggling with a Hyundai or Kia that cranks but won't start? Or does your engine stall unexpectedly? The P0335 code is a common culprit. Learn how to diagnose a failing...

Guía Definitiva: Sensor de Oxígeno y Cómo Solucionar el Código P0420 (Honda, Toyota, Nissan)

El código P0420 es el problema más común en Honda y Toyota. Muchos mecánicos te dirán que cambies el catalizador ($1000+), pero a menudo es solo un sensor de oxígeno...