[Focus]

Hey Guys,


So i'm having a crazy misfire with a SES light thrown. It originally said it was cylinder 3 but then moved to cylinder 1. I've replaced the plugs in those cylinders, switched coil packs and the issue was still saying cylinder 1. So i switch injectors between cylinder 1 & 2 and it's still saying misfire on cylinder 1. At this point i'm stuck and not sure what else it could be.

Just for some history, the SES light came on while i was at a stop light, idle, not under load.

Anyone have any insight to this?

[j1gilles]

Originally Posted by Focus

Hey Guys,


So i'm having a crazy misfire with a SES light thrown. It originally said it was cylinder 3 but then moved to cylinder 1. I've replaced the plugs in those cylinders, switched coil packs and the issue was still saying cylinder 1. So i switch injectors between cylinder 1 & 2 and it's still saying misfire on cylinder 1. At this point i'm stuck and not sure what else it could be.

Just for some history, the SES light came on while i was at a stop light, idle, not under load.

Anyone have any insight to this?

What year is your car and what are the exact codes being thrown?

[Pr335bob]

I'd say last resort change injectors in bank 1. As in cyl 1,2 and 3. That worked for me. Although I did everything except swap injectors. Kept getting the cylinder 3 error.

[Focus]

Originally Posted by j1gilles

What year is your car and what are the exact codes being thrown?

2E30 - Injector Cylinder 1. Today i'm going to try changing all the spark plugs across the board to see if there's any effect. I just find it wierd that the issue started with Cylinder 3 and is now settled on cylinder 1.

[Focus]

Could injector coding possibly have anything to do with it?

[j1gilles]

Originally Posted by Focus

Could injector coding possibly have anything to do with it?

I've never seen an un-coded injector cause a misfire but I guess it is possible. I drove my car for a few days on un-coded injectors... Is your car an 07? If it is it could be the mosfet in the ECM for cylinder 1?

[Focus]

Originally Posted by j1gilles

I've never seen an un-coded injector cause a misfire but I guess it is possible. I drove my car for a few days on un-coded injectors... Is your car an 07? If it is it could be the mosfet in the ECM for cylinder 1?

Its an 07

I tested the MOSFET and it was getting the same voltage as all of the other MOSFETS. Maybe i'll replace it just in case and report back

[j1gilles]

Originally Posted by Focus

Its an 07

I tested the MOSFET and it was getting the same voltage as all of the other MOSFETS. Maybe i'll replace it just in case and report back

Probably not the issue then... Good luck!