[reidy4040]

Hi
My brothers Astra has some problems.
It idles ok but has the ECU light on. When you are driving and you go to put your foot down it judders and misfires when accelerating causing the ECU light to flash.

The fault code it brings up is 301 - Cylinder one misfire

The coilpack has been replaced but no change.

Any ideas?

Cheers

 

[Boroboy]

Hi
My brothers Astra has some problems.
It idles ok but has the ECU light on. When you are driving and you go to put your foot down it judders and misfires when accelerating causing the ECU light to flash.

The fault code it brings up is 301 - Cylinder one misfire

The coilpack has been replaced but no change.

Any ideas?

Cheers

Plugs?

 

[reidy4040]

plugs dont look to bad. maybe dodgy coilpack?

 

[Boroboy]

plugs dont look to bad. maybe dodgy coilpack?

You've already changed coil pack. You can't always visually tell if a plug is breaking down.

 

[reidy4040]

true enough, will change them and see. they are only few months old tho

 

[Boroboy]

true enough, will change them and see. they are only few months old tho

Change cylinder 3 plug with another plug from another cylinder, then check fault code? If code changes, then you know it's your plug. If not, it's not the plug. This may save cash.
Let me know how it goes.

 

[bassman9878]

the egr valve caused me to log a missfire on cylinder 3, could be worth cleaning it