Random misfire-no CEL Topic is solved

Legofan · Post by **Legofan** » 13 May 2017, 13:51

On to the next problem of so many but, this one just popped up and a priority.

I'm getting a random misfire on one of the cylinders while driving, started yesterday. It happens in any condition, idle, driving or full throttle. It will come and go quickly on off like someone is flipping a switch an then not happen again for the rest of the trip, generally 10 miles. It usually happens after about 15 minutes of urban driving, no hwy. When it does misfire there is a sulfur smell which is the converter processing raw fuel I assume. There is also not much power loss when this happens aside from the missing cylinder if you get what I mean.

I'm not getting a CEL so I don't know what cylinder it is.

First things that come to mind are:

Coil
Plug(fouled)
Coil plug(all the retainer clips are broken)

Any hints to what might cause this? Is it common? I'd prefer not to randomly start replacing parts so I guess I need to drive it until I get a CEL?

Thoughts?

Cees Klumper · Post by **Cees Klumper** » 13 May 2017, 14:02

Do you have a code reader? That could clarify things. My swag would be a coil that is starting to go. Love those Miss Intermittents.

RSAmbassador · Post by **RSAmbassador** » 13 May 2017, 14:05

Mine has same issue, but it threw a cel but for something totally different

Legofan · Post by **Legofan** » 13 May 2017, 16:26

Cees Klumper wrote: ↑13 May 2017, 14:02 Do you have a code reader? That could clarify things. My swag would be a coil that is starting to go. Love those Miss Intermittents.

I do, I bought an i906 a while back and I just figured if there's no CEL it won't tell me anything. I'll check it tomorrow.

Legofan · Post by **Legofan** » 13 May 2017, 16:31

RSAmbassador wrote: ↑13 May 2017, 14:05 Mine has same issue, but it threw a cel but for something totally different

What was the CEL for?

RSAmbassador · Post by **RSAmbassador** » 13 May 2017, 21:44

P0459, related to the evap system

Legofan · Post by **Legofan** » 14 May 2017, 05:39

Do you need a purge valve solenoid? I have an extra one I can mail if you pay shipping.

RSAmbassador · Post by **RSAmbassador** » 14 May 2017, 11:31

I think I might need one. But on a side note where is it at on the motor

Legofan · Post by **Legofan** » 14 May 2017, 12:49

RSAmbassador wrote: ↑14 May 2017, 11:31 I think I might need one. But on a side note where is it at on the motor

On the fan shroud driver side.

Legofan · Post by **Legofan** » 14 May 2017, 12:59

Drove the car for about an hr, nothing. Five minutes from my driveway and it starts misfiring. This time the CEL flashed. It's still pretty random but now I have a place to look.

I'll keep updating, I'm going to take a look tomorrow after work when it's cold.