Random Misfire Problem

[LScottBell]

Had this problem for about 2-3 month now

*Edit* (Just noticed)

Noticed it will only misfire in 5th gear when doing lower speeds (30 Mph) i really am stuck on what to try. Tried coilpack and new plugs but still the same

*Edit*

Engine Management Light Flashes and shows p0300 p0301 p0302 p0303 random misfire on cylinders 1 ' 2' 3 but the car isnt actually losing power or anything ? It still drives the exact same.. I just reset the code each time but it still comes back. Ive changed the coilpack ' New Plugs ' New coolant Temp Sensor ' The fuel filter is about 9 month old but im stuck what to go for next ? Was maybe thinking sticky injector?

Anyone know what to give a go ?

Thanks Guys :y:

[LScottBell]

Sorry for bumping the post but i wanted to instead of starting a new problem thread as i found more info on whats happening.

Any help would be great

Cheers :y:

[CraigLovelock]

5th gear at 30mph? Watch out for your clutch buddy!

But on the topic, No idea sorry.

[obeone]

Might be worth putting some injector cleaner in the petrol as its an easy job and might elliminate the injectors?

[outrage_uk]

Knock sensor? Do saxos even have knock sensors? Subaru one went and it messed up the ignition timing and created a misfire..

[LScottBell]

Tried injector cleaner mate.

Yes i think they do have a knock sensor.. Worth trying a new one?

What else could cause a misfire in 5th?

[outrage_uk]

Only in 5th gear?

[LScottBell]

Yes only 5th gear.. Not a clue why sometimes it drops to 3 cylinders firing and when i turn car off and back on its fine again.

Weird

[johnr32]

Was maybe thinking sticky injector?



Most likely a dodgey injectors 1,2 and 3. Try swapping the 4th injector around and see what pattern it beings up on the OBD.

[LScottBell]

Easy swap for injectors mate.. I would just get a full set and change them

Vtr 2001 plate ?