Rick's Free Auto Repair Advice

Posts Tagged: Ignition Coil

How an Ignition Coil works

How an Ignition Coil works An ignition coil provides a high voltage pulse that fires across a spark gap to ignite the air/fuel mixture in the combustion chamber. The ignition coil has three components; primary winding, a secondary winding, and an iron core. These components work together to convert 12-volt DC power in 25,000 to 40,000 volts DC. Primary windings and the iron core The primary winding consists of approximately 200 wraps of a thick gauge wire wound around an iron core. When 12 volts are applied to the primary … Read More

Diagnose ignition coil failure

Diagnose ignition coil failure — How to Most late model engines use coil-on-plug (COP) ignition coils. COP ignition coil provide higher voltage than coil packs because they operate with longer dwell time. In other words, they have more time to build a magnetic field before the power shuts off and the field collapse. So a COP produces a higher voltage spark when it collapses. Car makers need that hotter/longer spark to ignite leaner fuel mixtures in modern engines. What a COP ignition coil schematic looks like COP ignition coils can … Read More

Is it the ignition coil?

Is a bad ignition coil causing your misfire or no-start condition? An ignition coil failure can be permanent, causing a no spark no start condition or it can intermittent, causing a cylinder-specific misfire condition or a random misfire. The trouble code for a random misfire condition is a P0300 and a cylinder specific misfire trouble code is P030X, with the X corresponding to the cylinder number. Ignition coils are made in various configurations like: single can coil, coil pack and coil-on-plug (COP). But they all operate on the same principle. … Read More

Ignition Coil Circuit Malfunction Code: What it means

Learn what an Ignition Coil Circuit Malfunction Code Means and how to fix the problem An Ignition Coil Circuit Malfunction is usually listed as codes P0350 through P0362. These codes indicate that the ECM has detected that the coil isn’t operating properly. The ECM can’t detect whether the problem is in the primary or secondary circuit. P0350 Ignition Coil Primary/Secondary Circuit Malfunction P0351 Ignition Coil A Primary/Secondary P0352 Ignition Coil B Primary/Secondary P0353 Ignition Coil C Primary/Secondary P0354 Ignition Coil D Primary/Secondary P0355 Ignition Coil E Primary/Secondary P0356 Ignition Coil … Read More


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