Random Misfire Problem

1. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #1 14th November 2010, 19:40

   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
2. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #2 8th December 2010, 00:16

   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
3. CraigLovelock Saxperience Forum Bum Joined: Jan 2009 Soton - Hedge End Posts: 3143 TT 225, Charged Eunos

   #3 8th December 2010, 00:23

   5th gear at 30mph? Watch out for your clutch buddy!
   
   But on the topic, No idea sorry.
4. obeone Infrequent Poster Joined: Feb 2010 Posts: 117

   #4 8th December 2010, 07:32

   Might be worth putting some injector cleaner in the petrol as its an easy job and might elliminate the injectors?
5. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

   #5 8th December 2010, 07:41

   Knock sensor? Do saxos even have knock sensors? Subaru one went and it messed up the ignition timing and created a misfire..
6. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #6 8th December 2010, 15:09

   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?
7. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

   #7 8th December 2010, 15:45

   Only in 5th gear?
8. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

   #8 8th December 2010, 15:59

   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
9. user_40784 Saxperience Forum Bum Joined: Jan 2010 London Posts: 2768

   #9 8th December 2010, 16:06

   Quote:

   Originally Posted by scotty111 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.
10. LScottBell Frequent Poster Joined: Oct 2009 Posts: 822 Citroen Saxo Vtr 2001

    #10 8th December 2010, 16:13

    Easy swap for injectors mate.. I would just get a full set and change them
    
    Vtr 2001 plate ?