Important! : Engine management light?!

  1. Infrequent Poster Joined: Sep 2010 Suffolk Posts: 114 MK2 VTR.
    #1
    Hi guys & girls, i recently changed a exhaust manifold and down pipe on my car and it didnt work so i changed it back to the standard one with the 'cat' on. but ever since my engine management light has stayed on... any ideas what this could be?

    help much appreciated.

    dan.
  2. Frequent Poster Joined: Feb 2010 maidenhead Posts: 923 Track Itb'd Mk1 Vts
    #2
    did you unplug the oxygen sensor, or put a decat in, then start it?? why didnt the other manifold + downpipe work, did they just not fit??
  3. Saxperience Forum Bum Joined: Aug 2008 Herne Bay. Kent Posts: 3881 Peugeot 307, Nissan Juke, 206 Grand tourisme
    #3
    it means you have a fault it needs to go on a code reader to see what fault is and be cleared most probably as you have interefered with the exhaust system its upset the lambda probe reset may sort it
  4. Infrequent Poster Joined: Sep 2010 Suffolk Posts: 114 MK2 VTR.
    #4
    i have a MK2 VTR. it had a magnum supersprint backbox, supersprint straight threw centre pipe. then a cat on the downpipe then a manifold.

    i tried to replace the manifold that had the cat on it with a manifold that had no cat. ( come off a mk1 saxo) but the lamba sensor whole was in the wrong place and couldnt fit the lamba sensor in the whole. so when i started it up it had air coming straight out of the manifold as there was a whole an no lamba sensor.
    i then put the original manifold with the cat back on, screwed in the lamba sensors started it up and engine management light has stayed on since...?
  5. Frequent Poster Joined: Feb 2010 maidenhead Posts: 923 Track Itb'd Mk1 Vts
    #5
    it has brang up a oxygen sensor fault then as you started it without it plugged in you will have to go to local garage to get it plugged in and erased then will be fine