New engine, serious idling problem - Not Icv?

1. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

   #1 10th October 2010, 19:52

   Fitted a vts into my vtr, however the ecu is off a different vts to the engine I fitted. It starts fine but the idling will idle at about 3k untill revved. It then fluctuates between 1500 and 2500 constantly bouncing up and down. Any idea what it could be?
2. LeeM Saxperience Post Whore Joined: Feb 2008 Liverpool Posts: 7393 Black Corsa C SRi

   #2 10th October 2010, 20:01

   Idle control valve
3. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #3 10th October 2010, 20:05

   or new map sensor
4. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

   #4 10th October 2010, 20:17

   Is there any way of telling which of these it would be?
5. iSlayeR Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr

   #5 10th October 2010, 20:23

   Quote:

   Originally Posted by Vtralex Is there any way of telling which of these it would be?

   Clean the ICV with carb cleaner
   
   move the map sensors wires gently, i soon as i did that on mine the revs went crazy and stalled, new sensor fixed it, Also remove it and clean it.
6. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

   #6 10th October 2010, 20:33

   Cool Anything else it could be and will try sort it tomorrow
7. Stevo123 Established Member Joined: Apr 2009 Redcar Posts: 1971 2000 Posi Blue vtr

   #7 11th October 2010, 20:31

   Also check simple things like is the brake vacuum pipe on? Are any aux pipes secure and in good condition (not split). Is throttle cable to tight holding the throttle open?
   
   Just daft stuff that we easily overlook during the excitement of fitting a new engine!
   
   Good luck mate
8. shane1234567 L-plater Joined: Aug 2010 Posts: 64 Saxo Vts 2000 plate, mk2, modified (weekend car)

   #8 11th October 2010, 20:35

   revs sticking may be coolent temp sensor, only £12 from shitroen for a vts, fixed my fault and it was the same as urs
9. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

   #9 14th October 2010, 15:20

   Just found a random plug that isnt plugged in... Also ran car for about ten minutes and it got very hot very quickly to the point the red light came on. Revs seem stick really badly also. Anyway yeah this isnt plugged in? Am i meant to have used the vts or vtr loom?
10. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #10 15th October 2010, 22:19

    Still no ideas?
11. shane1234567 L-plater Joined: Aug 2010 Posts: 64 Saxo Vts 2000 plate, mk2, modified (weekend car)

    #11 16th October 2010, 11:20

    have u a larger pic were that sensor is by as i cant make it out lol...
    
    have u tried the temp sensor?? just when its over revving disconnect it and if the revs drop / temp then job done, get a new 1
    its the green top sensor
12. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #12 17th October 2010, 13:47

    Will try that in a minute, and that one is next to the temp sensor above the gearbox.
    
    Edit: Just tried and all it did was make it rev a bit hgher. Still had the same probem.
    
    Also if it helps when I first start the car it idles at about 1200 then as it warms up it idles higher and then after 5 minutes or so goes completely stupid
13. wesley-saxo Frequent Poster Joined: Aug 2010 portsmouth Posts: 796 corsa sxi saxo

    #13 18th October 2010, 17:54

    did u find out if it was your icv??
14. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #14 18th October 2010, 21:02

    Wasnt that either
15. Oc2 Frequent Poster Joined: Apr 2010 Nottm. Posts: 924 Focus ST2 ASBO

    #15 18th October 2010, 21:06

    Ive got this, replaced ICV and Throttle body, no avail. check my thread titled Right... im rreally clutching at straws, but oh well
16. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #16 20th October 2010, 15:53

    Just cleaned ICV again, when spraying the carb cleaner through the TB the revs drop completely till it cuts out which is normal, but now instead of the revs gradually building they shoot up to about 3800 and dont ove unless you rev it, which causes them to go higher. No bouncing though so maybe i put it back together wrong?
17. user_38811 Saxperience Forum Bum Joined: Nov 2009 Sawtry Posts: 3456 Saxo VTS Saxo VTR

    #17 20th October 2010, 16:02

    I saw that pic, it looks like the coolant temp sensor isn't even plugged in?
18. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #18 20th October 2010, 16:18

    The only one not plugged in is the brown one as there is nothing coming off the loom for it?
19. user_38811 Saxperience Forum Bum Joined: Nov 2009 Sawtry Posts: 3456 Saxo VTS Saxo VTR

    #19 20th October 2010, 21:41

    Quote:

    Originally Posted by Vtralex The only one not plugged in is the brown one as there is nothing coming off the loom for it?

    Im totally sure that's the coolant temp sensor though?
    
    I'll have a look on my VTS tomorrow before work and see if im right
20. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #20 20th October 2010, 21:49

    Cheers mate , I thought that was the green one for some reason. Out of interest should I have used the vts or the vtr loom?
21. user_38811 Saxperience Forum Bum Joined: Nov 2009 Sawtry Posts: 3456 Saxo VTS Saxo VTR

    #21 20th October 2010, 22:03

    Quote:

    Originally Posted by Vtralex Cheers mate , I thought that was the green one for some reason. Out of interest should I have used the vts or the vtr loom?

    
    VTS loom mate , did you use the VTR loom then matey?
22. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #22 20th October 2010, 22:43

    Nah used the vts loom :|
23. Vtralex Regular Poster Joined: Jan 2010 High wycombe Posts: 435 Mk1 saxo vts

    #23 22nd October 2010, 13:38

    Anything else to tryy?