User Tag List

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 5 of 5

Thread: Temporary loss of power

  1. #1
    Full Member Teapot's Avatar
    Join Date
    Mar 2010
    Location
    woodbridge, suffolk
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    81 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design+

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 101000

    Default Temporary loss of power

    Hi all,

    I have a 2004 Signum CDTI 120 with about 110k on the clock. Since I bought it about a year ago it has performed well, but yesterday it lost nearly all power below 2000rpm. Above 2000 was fine but needed more throttle than usual.

    I gave it a good thrashing along a stretch of dual carriageway with several roundabouts and cruised at 70 in 4th instead of 6th for a while to keep the revs high and get the engine really warm, and the problem seems to have gone away. There were no warning lights on at any time.

    Having read various other threads on this forum, a failed EGR valve or swirl valve (not sure what the latter is or does) seems to be the most common cause of these symptoms. However the previous owner had the EGR and manifold replaced at a vauxhall dealer (over £700!) not long before selling it. Could the new one have started getting clogged already? If the fault comes back, what should I look for?

    Also, the engine is a little bit noisy when cold, has been for several months. Sounds like a faulty tappet but can only hear with the windows down. Once the engine is warm it sounds fine. Need I be concerned? It's a little quiter since having the oil changed, but the noise is still noticeable.

    cheers
    Paul.

  2. #2
    Regular Member nokiaman1978's Avatar
    Join Date
    Sep 2009
    Location
    Glasgow
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    does your car have dpf if it does by the way you have driven your car it has caused it to regen and burn away the soot which is a good thing.

  3. #3
    Full Member Teapot's Avatar
    Join Date
    Mar 2010
    Location
    woodbridge, suffolk
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    81 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design+

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 101000

    Default

    Quote Originally Posted by nokiaman1978 View Post
    does your car have dpf if it does by the way you have driven your car it has caused it to regen and burn away the soot which is a good thing.
    Yes, it does. I often drive quite enthusiastically anyway, plus it had a couple of 200+ mile motorway runs in the last few weeks so I'd be surprised if the dpf had got clogged up.

    cheers
    Paul.

  4. #4
    Regular Member barney490's Avatar
    Join Date
    Dec 2009
    Location
    PRESTON
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    hi Paul,

    If yours is a 120, it wont have swirl valves, these are only on the 150's. Has the car covered many miles since the EGR was changed? might also be worth a visual check of all vacuum hoses and clean the boost sensor. I have a 120 estate with 104k on the clock and the boost sensor was virtually blocked with soot and crud. the egr has to be removed to gain access to fixing bolt of the boost sensor. Mine is also a little noisey when cold but fine when warm, so given the mileage, i dont think its a concern.

  5. #5
    Full Member Teapot's Avatar
    Join Date
    Mar 2010
    Location
    woodbridge, suffolk
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    81 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design+

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 101000

    Default

    Quote Originally Posted by barney490 View Post
    hi Paul,

    If yours is a 120, it wont have swirl valves, these are only on the 150's. Has the car covered many miles since the EGR was changed? might also be worth a visual check of all vacuum hoses and clean the boost sensor. I have a 120 estate with 104k on the clock and the boost sensor was virtually blocked with soot and crud. the egr has to be removed to gain access to fixing bolt of the boost sensor. Mine is also a little noisey when cold but fine when warm, so given the mileage, i dont think its a concern.
    It's done about 15k since the EGR valve and manifold were replaced. If it goes wrong again I'll check the boost sensor and EGR valve.

    Thanks!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 17
    Last Post: 11th March 2015, 00:55
  2. Temporary Loss of power in 1st gear
    By Envy in forum Engine & Drivetrain
    Replies: 4
    Last Post: 24th October 2010, 22:24
  3. Power loss!
    By IceGlaysher in forum Engine & Drivetrain
    Replies: 7
    Last Post: 10th January 2010, 19:28
  4. Loss of power
    By vectra-c1000 in forum Engine & Drivetrain
    Replies: 2
    Last Post: 26th November 2008, 11:37
  5. Temporary loss of power 2.0dti
    By bran.c in forum Engine & Drivetrain
    Replies: 12
    Last Post: 5th August 2007, 22:17

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •