1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Car keeps cutting out

Discussion in 'Motors' started by Thesnipergecko, 11 May 2006.

  1. Thesnipergecko

    Soldato

    Joined: 17 Oct 2002

    Posts: 7,334

    Location: 127.0.0.1

    Symptoms:

    When sitting idle, sometimes it revs slightly on its own between 1-2000 rpm.
    Sometimes when sitting idle it just drops revs and cuts out.

    When it drops revs i hit the accelerator to try and keep the revs up but it just doesnt want to know, it revs a little bit but then cuts out anyway.

    Cars a 2.0 Peugeot 306 Xsi 1999 V reg.

    Ive cleaned all the air filter out but its still doing the same.

    Paul ...
     
  2. Firestar_3x

    Caporegime

    Joined: 11 Mar 2005

    Posts: 30,662

    Location: Leafy Cheshire

    Idle control valve.
     
  3. Thesnipergecko

    Soldato

    Joined: 17 Oct 2002

    Posts: 7,334

    Location: 127.0.0.1

    I fix PC's for a living :p whats a idle control valve and is it expensive :p

    Paul ...
     
  4. Firestar_3x

    Caporegime

    Joined: 11 Mar 2005

    Posts: 30,662

    Location: Leafy Cheshire

    No idea depends if its a unit that can be changed independently or if its fixed to a bigger bit.
     
  5. tedaC

    Hitman

    Joined: 26 Apr 2006

    Posts: 673

    i had a similar problem with a vehicle i had and it was a faulty alternator - but im no car genius
     
  6. Thesnipergecko

    Soldato

    Joined: 17 Oct 2002

    Posts: 7,334

    Location: 127.0.0.1

    Thanks for that mate, sounds like thats my problem, ill do some reading up on where to find the ICV and give it a clean tonight. If that doesnt work then it looks like a replacement.

    Paul ...
     
  7. Nathan

    Mobster

    Joined: 4 Feb 2003

    Posts: 4,663

    Location: West Midlands

    Mate its either your MAP sensor or idle control valve. Common on these cars, get over to 306gti6.com and look in the forum FAQ, show you what you need to do. If your lucky they just need a clean with some WD40 ;) albeit they will be guides for a gti-6 for you ll get the idea.
     
  8. thepharcyde

    Sgarrista

    Joined: 17 Mar 2004

    Posts: 8,258

    MAF?

    If its the idle control valve this also went on my Focus, when its warm does it idle okay?

    Sometimes they get junked up, so if you can remove it, you can clean it in spirit or something.
     
  9. Thesnipergecko

    Soldato

    Joined: 17 Oct 2002

    Posts: 7,334

    Location: 127.0.0.1

    Its done it today and the temp outside is 30c :p does that count haha.

    It also did it the other day when we had plenty of rain, i just thought it had gotten damp.

    Ill have a look under the bonnet tonight, not sure what im looking for but ill have a look :)

    Paul ...
     
    Last edited: 11 May 2006
  10. thebrasso

    Soldato

    Joined: 18 Oct 2002

    Posts: 5,312

    I recently had ignition problems, idle speed went a bit funny. In the end it was a component in the distributor that was damaged. The cause was a crack in the distributor casing causing voltage fluctuations. High voltages in the distributor (stepped up I guess) were trying to jump the slight gap in the casing.

    If you can find your distributor cap, should be near your engine with wires etc check it for physical damage i.e. any hairline cracks or splits in the casing.

    I'd go and get it checked properly, when I looked into it fixing ignition problems was pretty complex. Even replacing parts could mean re-adjusting ignition timings I think.
     
  11. CypherPunk

    Hitman

    Joined: 30 Dec 2002

    Posts: 738

    While I don't have any direct experience with the 306, I'd say that it's unlikely to be a problem with the idle stepper motor as opening the throttle will normally stop the car from stalling if you are quick enough. Also if the problem does lie with the idle stepper motor it will most like stall when the revs are falling back to idle instead of just randomly as the OP seems to imply.

    Because the revs rise and fall on their own accord I’d say that the problem is probably caused by a faulty or perhaps just dirty MAP sensor, shouldn't be too difficult to clean if you can find it, I’d also take at the MAP sensor plug too as I know they can cause problems on some Citroen and Peugeot engines.

    Hope that helps
     
  12. TripleT

    Sgarrista

    Joined: 24 Oct 2002

    Posts: 9,536

    Location: Manchester City Centre

    Defo sounds like the idle control valve (or stepper motor as they're known).

    As said there's a very good guild on www.306gti6.com on how to remove and give it a quick clean. This sometimes does the trick but it might need the unit replacing.

    Guild can be found here , it's for a GTi6 but the engines are very similar so should be fine :)

    EDIT - As said above, could possibly be the MAF, simple to change, sensor can be found here Again it's for a GTi6 but it should be very similar on the XSi.
     
  13. mrgubby

    Soldato

    Joined: 21 Oct 2002

    Posts: 5,617

    Location: 30 miles north of London

    Had a similar problem on my Vectra , it was the air hose from the filter to the inlet body. It had cracked/split and the air leak was screwing up the mixture depending on car position/air temp.