News : Very common problem and i think iv found the anser!!!!!!!!!!!!!!!

1. saxo88 L-plater Joined: Jan 2008 manchester Posts: 36 mk1 vtr with massive wish list... soon to be reali

   #1 14th December 2008, 17:23

   i started a thred on here a few days ago about a problem on my vtr...
   every time i reached 4000rpm it was bogging down, i had major power loss was also idling at any where betwen 500rpm and 2500rpm
   
   a few people said it was the air filter (not breathing right) so i sorted that, a few people said differant things but nout worked...
   
   i also had a look around on here n it seems to be a very common problem as theres a massive thred on it...
   
   so, last nite i decided to reset my ecu, i reconnected it all up this morning and hey presto....
   
   its running perfect idling at right rpm and its runnig better than ever!!!!!
   it seems to be soooooo much faster as well!!!!!
   hope this works for ne1 else with this problem!
   
   tom
2. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #2 14th December 2008, 17:25

   thats all i done tbh, but my car wasnt idling properly, i disconnected the battery, a while later my car idled like it should
3. vtr130 Established Member Joined: May 2006 Posts: 2279

   #3 14th December 2008, 18:20

   How do you reset the ecu out of interest?
4. Peasnall Frequent Poster Joined: Nov 2006 Lincoln Posts: 908 Wicked Red VTS

   #4 14th December 2008, 18:38

   i think you disconnect the battery for 2 hours.
5. user_24886 Saxperience Post Whore Joined: Jun 2008 Notts Posts: 6227 White pug 106 1.6

   #5 14th December 2008, 18:48

   sounds like a plan
6. JamesRm Forum Section Moderator Joined: Aug 2008 Liverpool Posts: 15517 Saxo VTR

   #6 14th December 2008, 19:00

   i would like to know how to aswell. and what does it do when it resets? and how would it have changed in anyway?
7. Ste Saxperience Post Whore Joined: Mar 2007 Yorkshire Posts: 5415 Saxo

   #7 14th December 2008, 20:08

   I reset the ECU on mine when the idle gets very lumpy, with the cams the ECU seems to calm down after it.
8. shaunyboy Frequent Poster Joined: Sep 2008 Manchester Posts: 538

   #8 14th December 2008, 20:19

   Best to disconect it overnight, as the electrical system has alot of risistors and capacitors and a hour or 2 may not be enough, escpecially the airbag system. So id reccomend disconnect both over night, in the morning clean terminals up, re-connect both leads and grease them up, fire it up and let it idle for a few mins then take it for a drive. It may run lumpy but it has to re-learn all its parameters again and your driving style which normally takes one complete drive cycle.
9. frankie Saxperience Addict Joined: Apr 2006 Frome, down deepest, darkest zummerset Posts: 12971 VTRallye

   #9 14th December 2008, 20:21

   if only this would work with my rallye inlet
10. saxo88 L-plater Joined: Jan 2008 manchester Posts: 36 mk1 vtr with massive wish list... soon to be reali

    #10 14th December 2008, 23:42

    Quote:

    Originally Posted by shaunyboy Best to disconect it overnight, as the electrical system has alot of risistors and capacitors and a hour or 2 may not be enough, escpecially the airbag system. So id reccomend disconnect both over night, in the morning clean terminals up, re-connect both leads and grease them up, fire it up and let it idle for a few mins then take it for a drive. It may run lumpy but it has to re-learn all its parameters again and your driving style which normally takes one complete drive cycle.

    thanks for explaining that mate lol
    i left mine over night and this morning it worked like a dream!
    
    tom
11. shaunyboy Frequent Poster Joined: Sep 2008 Manchester Posts: 538

    #11 15th December 2008, 00:36

    no problem, its all about the capacitors in the electrical system. Best way to explain is the airbag system, they have capacitors wich hold charge (electric) without the battery, reason being if yo have a front end smash, its going to be the battery that gets it, so to detonate the airbag, it uses the charge in the capacitors. The engine management relys on capacitors to store info, but when the capacitors loose charge, the info go's so the ecu is like it was when it was made, it then has to re-learn all its parameters from the various sensors.
12. Peasnall Frequent Poster Joined: Nov 2006 Lincoln Posts: 908 Wicked Red VTS

    #12 15th December 2008, 16:14

    just done mine, seems to have improved the startup, used to turn the key, it would hit idle then bog down to 500rpm then back too idle again, doesnt do that anymore, time will tell if it solves the other issues ive been having.
13. Aly Saxperience Addict Joined: Apr 2007 Sunderland Posts: 10341

    #13 15th December 2008, 17:10

    Quote:

    Originally Posted by shaunyboy alot of risistors and capacitors

    Just stick a screw driver across the capacitor and get ready for rapid discharging
14. SaxoFurio1988 Established Member Joined: Apr 2007 Rhondda Posts: 1774 Saxo Furio

    #14 15th December 2008, 19:45

    I've just disconnected my battery now for the night. So hopefully **fingers crossed** it will cure my heap of shit
15. operation-saxo L-plater Joined: Oct 2007 Derbyshire Posts: 54 bmw X5 (daily) impreza powered 106 (project)

    #15 15th December 2008, 20:08

    interesting stuff am guessing that its the same for both single plug and 3 plug ecu's and for any litre from 1.0 to 1.6 16v? or just for the vtr?
16. saxotourdecorse Regular Poster Joined: May 2008 Posts: 448 Not a drop of halfords anywhere....

    #16 15th December 2008, 20:30

    changed the lambda sensor on my old vtr and a new air box cos it was full of shit and not breathin and it fixed it straight away and never came back. on my current vts the race cams will cause it to stall on idle occasionally wen its freezin and sounds like a bag of nails but once its warm its like a new car. in most cases its the lamba sensors that needs changin.
17. moony_vtr L-plater Joined: Oct 2008 shepshed Posts: 55 02 saxo vtr 98 bhp

    #17 15th December 2008, 21:36

    resetting the ecu will only cure the problem of poor idling untill the problem starts again, best bet is to try and figure out why it idling wrong
18. saxo88 L-plater Joined: Jan 2008 manchester Posts: 36 mk1 vtr with massive wish list... soon to be reali

    #18 15th December 2008, 22:55

    Quote:

    Originally Posted by moony_vtr resetting the ecu will only cure the problem of poor idling untill the problem starts again, best bet is to try and figure out why it idling wrong

    in my case the car was bogging down at 4000rpm an had major power loss, but now all is fine and is runnig like a dream and all i did was re-set the ECU...
19. saxo88 L-plater Joined: Jan 2008 manchester Posts: 36 mk1 vtr with massive wish list... soon to be reali

    #19 15th December 2008, 22:56

    Quote:

    Originally Posted by operation-saxo interesting stuff am guessing that its the same for both single plug and 3 plug ecu's and for any litre from 1.0 to 1.6 16v? or just for the vtr?

    yeh from what i can gather its the same for all
20. shaunyboy Frequent Poster Joined: Sep 2008 Manchester Posts: 538

    #20 16th December 2008, 00:32

    Quote:

    Originally Posted by moony_vtr resetting the ecu will only cure the problem of poor idling untill the problem starts again, best bet is to try and figure out why it idling wrong

    Yes.. after resetting if it comes back, you then know its a fault.
21. saxo88 L-plater Joined: Jan 2008 manchester Posts: 36 mk1 vtr with massive wish list... soon to be reali

    #21 16th December 2008, 23:40

    Quote:

    Originally Posted by shaunyboy Yes.. after resetting if it comes back, you then know its a fault.

    or just reset it every time it comes bk and forget bout the problem
    it would work out alot cheaper haha