If one of the coil burns out would it cause engine to run really really rough like shaky? I'm just trying to get my car running right. I discovered one of my coil is just straight dead.

Here is the LINK How it runs right now.

 

Now find out which one it is and replace it.

 

It should be giving you a code...P030x, where x is the cylinder # that's misfiring. Change that coil.

 

X2

 

Whats funny is its not throwing code for that. Rather its throwing code for Crankshaft Sensor Circuit. Now it's funny how I change that sensor and still getting that code. So that's why I though my car is not sparking on some cylinders. But I left the car on and unplug each and everyone to see if it change and engine noise. Every one of them I took out engine noise change except the one in middle top. To make sure I had an extra coils sitting around so I plug the extra coil and test to metal see if it sparks. So I figured out which one I need to change. But I'm just curious why would my CEL shows different than the problem its occurring. It was too late for me to change the coil out tonight so I'm going to change it tomorrow to see if it gets cured by that.

Any other ideas what could it be wrong?

 

hey OP, I'm basically trying to get my car to run the same way as well. I noticed you said you tried unplugging each coil to try and find out where the problem was. How obvious was it when you unplugged the coil that it was the one that was dead? I finally got around to trying it today on my car. I had a P0302 so I tried to test the one on cylinder 2 as well as the other 2 in the front but... maybe it's just me but I didnt seem to notice a very big difference... Did you find out when the car was up to operating temperature or cold? If it's not too much trouble, would you be able to try and show me by video how much of a difference taking out a good coil made to the engine?

 

A bad coil will make your car run idle at low rpms but will be kind of unnoticeable at highway speeds. Coils are about 70 at advance auto or around 25 on the bay. My bad coil was located right underneath the intake manifold so it was one pain in the rear to replace.

 

Um.. Sure I'll take some today later on. You can hear the difference like engine sound going down.

 

This coil was burnt really bad. This was done by EU installation. Yes I did had resistor installed.

 

manikchand, mind helping out fellow desi orger with size of the Bolt that goes in the last pic of the coil? lost mine yest somewhere in engine and just didnt fell out, its there somewhere but cant find it.

 

LOL. I'll get you the size today.