LPC

Hey everyone. I recently took a look at my spark plugs and decided they needed cleaning. The ground electrodes were white, so I used a file to file off the white, and then replaced them back in the car. After turning on the car, I have a rough idle, engine code p1305, and a dashboard error that says VSC off. I know the code deals with ignition coil 2, but I'm not sure where to start. Engine was fine before this, Did i possibly damage the spark plug 2 while filing down the electrode?

XJSFan

You do NOT clean or gap iridium spark plugs... Now you need to replace them with new plugs. I would recommend the original stock Denso iridium's.

LPC

Good to know. Should've researched that before I did what I did. So my best bet is to replace the spark plug, i guess. Better than the coil pack.

LPC

Would it be okay to just replace the one that I am getting the code with? Or do I need to replace all?

jimbosr1

i have always replaced them if your going to take them out anyway.

honeygee2

Why would you replace only one...you damaged them all by filing them down.....heck they are good for 125000miles. I have found with normal scheduled maintainence these cars will last fora long time.

XJSFan

LPC,

No problem on what you did but these newer iridium's come pre-gapped and are ready to be install. Do all of them and then you are good for another 100K... I used to remove/clean the plugs on all my older collector cars but today I just replace them. Just take the new ones out of the box and install...

LPC

Just changed all the spark plugs, same code. We're thinking it's the coil...going to test that now.

AlexusAnja

You probably either damaged coil pack 2 or some connector came loose when you removed it. Check to make sure all connections are back on tightly.

XJSFan

I agree but do you also have to clear the codes?

DavidinCT

I would clear that codes, it will go off after a while driving. I had a bad sensor at one point, after replaced, it didn't go off till I put 50 miles or so on the car...

Sometimes yanking the battery for like 20 min will do it...