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Thread: Let me introduce myself with a list of problems!

  1. #1
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    Default Let me introduce myself with a list of problems!

    Firstly, as a new bod, a big hello to everyone here!

    Secondly.......help!!!

    I bought a 2003 2.2 Dti Signum a few days ago and it's giving me grief already :-(

    This is what I've noticed:

    Fuel consumption is about 33mpg
    Puffs of black smoke out the exhaust
    Tries to stall when pulling away
    Whilst driving I often get a juddering sensation (like a misfire)
    Whilst driving it will judder and then just cut out, but will restart okay
    Spanner comes up on the dash every few miles, goes into restricted power mode and then clears itself after about thirty seconds.

    Spent a few quid putting it on diagnostic and the following fault codes showed up:

    P0638 Throttle Control Circuit Positive Deviation

    P0703 Brake Switch Circuit Malfunction

    P0704 Clutch Switch Signal Incorrect

    P0380 Glow Device Circuit Low Voltage

    Anyone had these problems before? Any suggestions for things that I can do myself instead of paying labour charges would be gratefully received!

    Oh, btw - I also have a bulb failure warning on the dash, and the centre display tells me to check the rear brake light bulbs, but have replaced these even though all the correct lights are working, have also removed the light units and cleaned all the contacts to be extra sure?

    Thanks

    Jon

  2. #2
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    Hi jon
    ok first one p0638 relates to your boost sensor , what is probably the case is that it has become covered with carbon deposit . easiest way to solve this is to remove the inlet manifold then remove thesensor and clean with carburettor cleaner , relatedto this you will probably find the egr valve , and the manifold itself will almot definnetly need a clean as well , all relatively straight forward just have a look in the how too section of the forum for guides
    p0703 no info at the moment
    p0704 no info at the moment
    p0380 relates to one or more of your glow plugs is faulty only cure for this to replace them have a look on ebay plenty on there going for a lot less than what the stealers will charge you.
    Driving vauxhall,s for 30 + years
    and still loving it

  3. #3
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    In addition to the above...

    Have a good look round all the Boost & vac pipe work for splits etc... it's sometimes easier to spot anything a miss if someone holds the revs around 2.5 k while you have a good look
    hth

  4. #4
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    Jon in a addition to my earlier post can you post a pic of your engine bay with the engine cover off this way we can see what vacuum valve and t p s set up you have as these vary
    Driving vauxhall,s for 30 + years
    and still loving it

  5. #5
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    Quote Originally Posted by bobssignum View Post
    Jon in a addition to my earlier post can you post a pic of your engine bay with the engine cover off this way we can see what vacuum valve and t p s set up you have as these vary
    Thanks for all the advice so far- will get the engine cover off tomorrow and take some pics.

    Have ordered some Bosch glow plugs from ebay, so will get those in as soon as they arrive, and see if that cures one of the faults.

    Cheers!!

    Jon

  6. #6
    Regular Member Dazzy2006's Avatar
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    Default

    Quote Originally Posted by signum_jon View Post
    Thanks for all the advice so far- will get the engine cover off tomorrow and take some pics.

    Have ordered some Bosch glow plugs from ebay, so will get those in as soon as they arrive, and see if that cures one of the faults.

    Cheers!!

    Jon
    Regarding the glowplugs - be VERY VERY careful when changing the glowplugs as they are prone to snapping - make sure you spray plusgas on them for a few days beforehand and the day you change them get the engine HOT and hopefully they will come out ok.

    I'm not trying to put you off but i've been quoted £700 to have a snapped glowplug removed and helicoiled

  7. #7
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    Engine : Z18XER


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    http://www.vectra-c.com/forum/showthread.php?t=70471

    Have a look at this thread its all the How to's and should help.

  8. #8
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    Default

    Quote Originally Posted by Dazzy2006 View Post
    Regarding the glowplugs - be VERY VERY careful when changing the glowplugs as they are prone to snapping - make sure you spray plusgas on them for a few days beforehand and the day you change them get the engine HOT and hopefully they will come out ok.

    I'm not trying to put you off but i've been quoted £700 to have a snapped glowplug removed and helicoiled
    Top Tip! Thanks as this is my first diesel and I would probably have attacked them in the same way as a normal spark plug.

    Jon

  9. #9
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    Default

    Quote Originally Posted by signum_jon View Post
    Thanks for all the advice so far- will get the engine cover off tomorrow and take some pics.

    Have ordered some Bosch glow plugs from ebay, so will get those in as soon as they arrive, and see if that cures one of the faults.

    Cheers!!

    Jon
    Picture of engine as requested - EGR valve looks new? (assuming I'm looking at the right bit?)

    Jon

  10. #10
    Regular Member the-wizard's Avatar
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    Vehicle : vectra-c

    Trim : sri

    Engine : cdti

    Year : 2004

    Mileage : 98,000

    Default

    Here's the others!.

    P0703 Torque Converter/Brake Switch B Circuit Malfunction

    P0704 Clutch Switch Input Circuit Malfunction

    just noticed your recent post so you may have a split boost or vacum hose, or if there's one or two small valves near the front r/h side near the radiator i believe they can be removed / parted & cleaned.

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