Revs bouncing about.

1. everyreasonto Newbie Joined: Nov 2010 Posts: 4

   #1 16th November 2010, 00:19

   Alright everyone, first post.
   
   I've got a saxo vtr and the revs have started bouncing around when I'm idling. I haven't had the car for long and I don't know much about car engines 'cause i'm used to working on bikes...
   
   It jumps between about 750 - 1050 revs about once every second or so and I haven't a clue where to start looking
   
   What I do know is that it has a k&n air filter and a straight through exhaust. Could either of these be the culprit?
   
   Cheers!
2. ptceltic Regular Poster Joined: Oct 2010 eastkilbride, glasgow Posts: 474 saxo VTR

   #2 16th November 2010, 09:21

   i know very little as well but i dough it has anything to do with them cus my vtr is doing the same and it is just standard but don't take my word for it.
   
   hopefully i can find out this problem as well
3. user_38486 Saxperience Forum Bum Joined: Oct 2009 Blackburn Posts: 4739 A few

   #3 16th November 2010, 10:35

   Clean the ICV (idle control valve) to start with. Its free to do and doesn't take long It could also be your MAP sensor
   Read this thread http://www.saxperience.com/forum/sho...t=cleaning+icv , it tell you how to clean the ICV
4. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #4 16th November 2010, 15:57

   Just a heads up mate the last thing i checked was the spark plugs as i'd only just fitted some NGK Iridium plugs, and found out that the electrodes had completely melted! Teach me to buy from eBay! Replaced with some NGK R's and work fine, doesnt cost anything to check!
5. user_34945 Regular Poster Joined: Jun 2009 Harleston, Norfolk Posts: 469 Mk2 Saxo Vtr 16V

   #5 16th November 2010, 15:58

   Oh Yeah, Welcome To The World Of Saxo's!
6. jonesy9 Established Member Joined: Feb 2009 Shropshire Posts: 1857 JP4 Saxo, Milano CTR

   #6 16th November 2010, 17:34

   most probably the IdleControlValve mate, get it out and give it a clean, but this can mean there wont be a huge amount of life left in it
7. everyreasonto Newbie Joined: Nov 2010 Posts: 4

   #7 16th November 2010, 21:52

   Wow, 5 posts just like that! I'll clean the ICV on sat and report back. Sort of reassuring that is could be something as small as that!
   
   Cheers!
8. L33 L-plater Joined: Jul 2010 Stoke-on-Trent Posts: 48

   #8 16th November 2010, 22:17

   ye my old vtr used to do that, not very often tho.
9. ptceltic Regular Poster Joined: Oct 2010 eastkilbride, glasgow Posts: 474 saxo VTR

   #9 16th November 2010, 23:47

   OK as i said i am in the same boat as him when you say that there might not be much life left is that if you take it out or that is just a sign that there is not much life left cu i have just bought my saxo and don't wont to start doing anything to it if it is just going to give up on me.????
   
   
   thanks
10. L33 L-plater Joined: Jul 2010 Stoke-on-Trent Posts: 48

    #10 18th November 2010, 00:34

    nah, hes just on about ICV aint got much life left not the engine.
11. tommythegun L-plater Joined: Oct 2010 Devon/ Teignmouth TQ149UJ Posts: 79 saxo vts

    #11 19th November 2010, 22:14

    My mates vts was doing this and it was due to the air filter taking in to much air.......
12. nicole_ Saxperience Post Whore Joined: Jul 2009 Newcastle Posts: 6713 VTS & EK9

    #12 19th November 2010, 22:32

    like this?
    http://www.youtube.com/watch?v=1jl_vuaZJ-g
    too much air as the breather pipes wernt all in their right places
    was very strange
13. everyreasonto Newbie Joined: Nov 2010 Posts: 4

    #13 20th November 2010, 10:11

    No, not quite as bad as that
    
    Took it for it's MOT today and it failed because they couldn't keep the revs steady enough to get an emissions test. Considering ripping out the K&N and putting the standard air-box back in as well I think! Oh the joy!
14. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #14 20th November 2010, 10:57

    Quote:

    Originally Posted by everyreasonto No, not quite as bad as that Took it for it's MOT today and it failed because they couldn't keep the revs steady enough to get an emissions test. Considering ripping out the K&N and putting the standard air-box back in as well I think! Oh the joy!

    It won't be that, It'll most likely be the ICV gunked up. Clean that if you haven't already. You can run without an air filter and it'll run fine. But don't, for obvious reasons...
15. everyreasonto Newbie Joined: Nov 2010 Posts: 4

    #15 20th November 2010, 20:18

    Ok I faffed about a bit, but my engine seems different to the guide and most other pics I can find.
    
    Have I pointed to the ICV in this image?
    
    
    
16. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

    #16 20th November 2010, 20:50

    Yep that's it, Also sounds like your map sensor, it's located to the left of the throttle body, same happend to my brothers vtr and by just touching the wires i managed to stall his car.
    
    Also when was it last serviced?
17. user_47113 Infrequent Poster Joined: Sep 2010 Kent Posts: 168 2000 VTS

    #17 14th December 2010, 18:18

    yep same problem! has anyone brought their icv from here? if so how was is? thanks
    Click here- Ebay ICV