Changing Ignition Coils to fix Misfire Problem with code P0301

Posted by Candy Lai on

What to Do When Engine Has Misfire
Several reasons can cause car misfire,
1. Bad Spark Plug
2. Bad Ignition Coil
3. Leak Manifold Gasket or Head Gasket
4. Faulty Fuel Injection

Always plug the Scan Tool into the scan port to diagnose the code for Check Engine Light signal, if you have handy scanner. Take example if today we got Code P0301, which means misfire problem happened on Cylinder 1. If lucky, we can sort out the problem with the easiest way by checking the Coils or Sparks.

First, take off the cover to get Coil No. 1 off and swap it with the 4th Coil. By switching these 2 coils positions, we will see if any changes of error Code. If now we got the error code P0304, as we wished, means the coil No. 1 is broken. So luckily we can shoot the problem with replacing it. Remove broken coil, get brand new one, snap it into No. 1 place and all is done!

 



Read More:

Why the Car is Idling Rough & 10 Tips to Solve Rough Idle Causes-Part I

<When to replace Ignition Coil and how much does it cost>


<Ignition Coil Symptoms of Saab 9-3 Bad Coil Packs & Tips to Find Out Broken One>


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