hesitation/misfire under partial load

1. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

   #1 8th June 2009, 22:04

   Recently bought a 1997 vts, when driving it down to get it mot'd today, noticed at part throttle it would feel as if there was a slight misfire but as soon as the foot went down, it seemed to be ok.
   
   relatively new to the vts engine, have been a rover man for a few years(stop laughing now plese!!) lol.
   
   any ideas/suggestions?
   
   its getting a good service when I get it back, feel it needs it maybe.
2. hooheehaa Infrequent Poster Joined: Jun 2009 North East Posts: 122 Saxo VTR Mk2

   #2 8th June 2009, 22:07

   Would check, leads, plugs...also maybe worth checking fuel filters..hope this helps
3. JamesRm Forum Section Moderator Joined: Aug 2008 Liverpool Posts: 15517 Saxo VTR

   #3 8th June 2009, 22:09

   Check the coilpack aswell as above mate
4. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

   #4 8th June 2009, 22:10

   Quote:

   Originally Posted by SaXo_vtr123 Check the coilpack aswell as above mate

   what would i be checking it for, damage, splits etc? dampness?
5. Andy_K Saxperience Post Whore Joined: Jan 2004 in the garage trying to fix the car Posts: 5882 Mondeo st tdci & Supercharged vts

   #5 8th June 2009, 22:13

   Sounds a bit like the coil pack tbh. If you have a mate with a vts, borrow their coil pack and try it on yours for a start. Could also be worn spark plugs if they havn't been changed for a while
6. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

   #6 8th June 2009, 22:15

   how much are coil packs? wheres the best place to get them? got some sparkplugs, will try it tomorrow to rule it out
7. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

   #7 8th June 2009, 22:15

   how much are coil packs? wheres the best place to get them? got some sparkplugs, will try it tomorrow to rule it out
8. hooheehaa Infrequent Poster Joined: Jun 2009 North East Posts: 122 Saxo VTR Mk2

   #8 8th June 2009, 22:18

   If the leads look old and worn change plugs and leads first to eliminate the most basic and cheap option.
9. Andy_K Saxperience Post Whore Joined: Jan 2004 in the garage trying to fix the car Posts: 5882 Mondeo st tdci & Supercharged vts

   #9 8th June 2009, 22:19

   Try ebay for a 2nd hand one. Sometimes there are new ones on there as well. Motor factors will usually be able to get hold of them as well for you. Citroen as a last resort (as they will cost a fortune from there)
   
   Cant remember how much they are - not bought one for ages. Have a feeling I've paid between £50 and £75 in the past for new ones
10. Andy_K Saxperience Post Whore Joined: Jan 2004 in the garage trying to fix the car Posts: 5882 Mondeo st tdci & Supercharged vts

    #10 8th June 2009, 22:20

    Quote:

    Originally Posted by hooheehaa If the leads look old and worn change plugs and leads first to eliminate the most basic and cheap option.

    No leads on a vts. they run a coil pack instead
11. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

    #11 8th June 2009, 22:21

    Quote:

    Originally Posted by Andy_K No leads on a vts. they run a coil pack instead

    beat me to it!!
    
    service, plugs, then coilpack maybe.... on the to do list
12. wm10001 Newbie Joined: Jun 2009 Posts: 4

    #12 12th June 2009, 23:33

    does the coil pack stop working straight away or does it get worse and worse
13. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

    #13 25th June 2009, 22:09

    bit of an update on this...
    
    the car is now cutting out on idle most of the time, and suffers from a random loss of power till it cuts out.
    
    would a hole in the cat cause this? lambda picking up more oxygen than normal and fecking with the fuelling?
    
    gave my ICV a wee clean today(new one on order from egay!), seems to have helped a bit, but still does it.
    
    New plugs are also in.
    
    all thats left could be the coil packs themselves.
    
    time shall tell!
    
    p.s. there is a niggle in the back of my head telling me to check the map line. would it cause these sorts of probs?
    
    cheers in advance chaps
14. fergy7197 Infrequent Poster Joined: May 2008 lanark Posts: 128 97 vts

    #14 27th June 2009, 00:16

    any ideas?
15. ryanmt Established Member Joined: Oct 2004 Warrington Posts: 1987 AX VTS 57 3.0 TDI A5

    #15 27th June 2009, 00:32

    if its at a fixed throttle range its possibly the TPS (throttle position sensor) throwing its toys out the pram.
    
    Failing that, map sensor or coil pack
16. scot-ish Established Member Joined: Apr 2009 just aroon the corner Posts: 1509 Audi S5, Corsa, Defender 90 CSW

    #16 27th June 2009, 04:25

    is say map sensor not reading correctly thorugh the range, but on full throttle its reading correctly
17. LeeM Saxperience Post Whore Joined: Feb 2008 Liverpool Posts: 7393 Black Corsa C SRi

    #17 27th June 2009, 09:01

    where is the map sensor ryan?
18. ryanmt Established Member Joined: Oct 2004 Warrington Posts: 1987 AX VTS 57 3.0 TDI A5

    #18 27th June 2009, 09:07

    left side of the inlet
19. LeeM Saxperience Post Whore Joined: Feb 2008 Liverpool Posts: 7393 Black Corsa C SRi

    #19 27th June 2009, 09:09

    oh yeah i know which one it is.
    looking at the tps it cant really be cleaned can it, only replaced?