Problems with speedometer and rev.

  1. Newbie Joined: Aug 2015 Posts: 5
    #1
    Hello to all saxperience members!
    I got 1.4 petrol saxo, 2002 manual. Recently I have encountered 2 problems, probably linked to each other.

    The First one is that my speedometer gone crazy, here is the video:
    Link
    Sometimes it even goes to zero and stays there, get up a bit if I knock the on him.

    Second problem, came a day after my speedometer broke, my rev(RPM) are not stable at idle, here is another video:
    Link
    This one happens randomly, mostly in idle.As you can see in the video sometimes if I give some gas or start driving it would disappear(but not always). My car never got shut down because of that and when it happens I can fill the engine struggling to move the car until he gets to 3000 rev.My check engine light only blinks when this problems occurs, otherwise it is off.
    I got and simple OBD2 tool scan and it shows me problem code P0200(link)

    Does anyone knows what can cause the problem? did anyone encountered this before?

    p.s - I replaced the fuel filter, air filter and oil to new ones.
  2. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #2
    With the car running what's the battery voltage reading?
  3. Newbie Joined: Aug 2015 Posts: 5
    #3
    I checked with my multimeter and it says 14.2 V - so that's normal(car off is 12.75 V).
    forgot to mention I got 2 6X9 morel speakers connected with massive audio digital amp.
  4. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #4
    Disconnect the amp and see what happens.
  5. Newbie Joined: Aug 2015 Posts: 5
    #5
    disconnected the amp but the problem on obd2 reader still exist, and didn't encountered the problem yet, will have to drive some more.
    PS - I was riding my car for over than 2 months with amp and everything was fine so I don't think it is related.
  6. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #6
    Until you clear the fault on the ecu the code will keep on re-appearing.