machew

I am looking at an error code P0352, and from the looks of it I have a faulty ignition coil in my #2 cylinder (front passenger). I figure with 148k miles and having just purchased the car, I would change the plugs and then look at the coils. Here is the question... I can find coils at $100 for six and I can find Lexus oem at $150 for one. I dont want to cheap out and have to redo things but I also dont want to spend $150 for a single coil. I was thinking of just changing all of them but maybe that is not the right idea either. Any comment from people with some experience?

Thanks!!

LeX2K

Put a coil from a different cylinder into #2 see if the problem moves with the coil. 6 coils for $100 is too good to be true there is no need to replace all of them if one is bad.

machew

Thanks, I just did that and will go get the error code read, I assume the code will be different if it is now in the front center cylinder. I unplugged the battery and the error came back right away. A Delphi coil is $60, a far cry from the $150 Lexus coil.

Appreciate the comment!

Mesquite77

Also good are Denso or NGK coil from Rockauto (they also list Delphi), i.e.: https://www.rockauto.com/en/moreinfo...t=7060&jsn=940

machew

Thank you for the reply. I will give an update to my problem later today. I switched #2 with the #4 cylinder and will see what code it is now throwing.​​​​​​​​​​​​​​I dont have a code reader, so I'll swing by my local Autozone on my way home.​​​​​​​

machew

So, I was on my way to get my codes read again after swapping my #2 and #4 ignition coils. I get halfway there and the check engine light shuts off. What the heck... I don't know if I have a question or not but I found this strange. I guess I will just wait to see what happens.

tomr51

maybe you had a loose coil plug???

LeX2K

Buy a $35 code reader it will be good enough for your purpose. There may be stored codes or as above a flaky connection you "cured" by moving the coils around.

machew

I was guessing the loose plug but it didn't seem loose. The connectors are old and brittle. Someone before me zip tied the 4 and 6 plugs. When I unhooked the 2 I could see why.

I'm going to replace the spark plugs soon... so until then I'll just drive it and see what happens.

Appriciate all the replies from everyone. I dont really have the money to take it to a shop right now.

LeX2K

You can replace the connector housings look up 90980-11885

machew

That's a good idea. 6 for $15. I'll add that to the list when I change the plugs.

Margate330

My front coil pack connector plugs went bad first, crusty & brittle and making bad connection.

Rears don't seem to get so hot.

Plz can I recommend getting your own scanner that will read codes and live data if you want to save money and have convenience, you won't regret.

machew

Back at it today... I was code free for a few days and the codes came back and in full force.

c1201, p0354,

p0306, 05, 04, 03, 02, 01, 00

I bought new spark plugs to start... any new idea?

spinellib

It looks like you just confirmed you had a bad #2 Coil, which you then switched to #4.
Isn't that what you did, switch the coils?

I think if you replace that ignition coil, all your codes will disappear...until another coil fails, which they will eventually because they're all the same age/miles.

machew

Correct, I switched the coils. I have changed 2,4,6 sparkplugs. They look pretty bad to me. Anyone care to guess the milage on these plugs? I don't have any idea, I've only had the car for about 6 months. Will start on 1,3,5 plugs. Those will take more time.