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Thread: 1.9 CDTi 150 (Facelift) Power Dropped

  1. #1
    Regular Member phykell's Avatar
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    Default 1.9 CDTi 150 (Facelift) Power Dropped

    Hi,

    My December 2005 1.9 CDTi 150 BHP estate (the facelift model) has dropped in power dramatically. It was always a bit naff low-down when taking off at roundabouts or the like, until the turbo kicks in which was sometimes quite a surprise! I've always assumed that was normal but over the last few days it seems as though that phenomenon has dramtically increased, to the point where it seems absolutely gutless at anything below 2K rpm, or until the turbo kicks in.

    The car has done about 46,000 miles and of course it's about three months out of warranty so I don't expect any help from Vauxhall

    I've been reading the forum and have noted that there are some similar sounding issues, the vast majority of which, are related to a fault with the EGR.

    I don't get any warning lights, there are no "codes" displayed (how do I obtain any codes anyway?).

    So, I think it's worth removing the EGR to try the cleaning approach first. Is this a good idea?

    Are there any other sensors which could do with a check/replacement?

    I know where the EGR valve is but where are all the other sensors?

    Is there any difference in the procedure for remove/clean/refit for the 150 BHP model over the 120?

    Thanks for looking
    Last edited by phykell; 8th March 2009 at 09:58.

  2. #2
    Regular Member phykell's Avatar
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    I removed the EGR - pretty easy job only made difficult by sudden downpour of rain right at the worst time. The worst bit was removing the connector which seemed very tight even with the yellow retainer slid back.

    The unit and the inlet were both absolutely caked in soot and it took some time to remove it all. I wasn't really happy with inlet because I was only really able to clean a small amount of it.

    I didn't bother drilling the unit and removing the solenoid as I was able to depress the plunger though of course the plunger should actually come out of the housing when the solenoid is actuated I guess. The actual valve also seemed to move smoothly with no "catching".

    I replaced the unit and tried the car out. Success! It's now *much* better than it was. It's still not perfect but I'm guessing that's just how they are anyway. I think when the weather's better I'll go the whole hog, repeat the exercise and clean the solenoid mechanism as well. Now I'm thinking about it, perhaps it's possible to just remove the solenoid if I can get to the 4 star drive bolts.

    What I'll probably do is source a new, replacement unit and fit that at a later point.

    Incidentally, the part number, identified by the stamp on the unit, is:

    55194735

    ...and now I'm sat here typing this, the sun's come out
    Last edited by phykell; 8th March 2009 at 14:00.

  3. #3
    Regular Member neilybhoy1888's Avatar
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    Default

    there is a gud chance the problem is the egr valve they are commen as hell we had a few customers cars off the road for a short time while vauxhall had them out off stock, i have a 150 sri and it is very sluggish at low revs.

  4. #4
    Regular Member big rich's Avatar
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    Vehicle : Vectra gsi

    Trim : Full heated leather

    Engine : 3200

    Year : 2004

    Default

    clean your egr valve out m8, try the cheapest thing first, there is a how2 on it m8

  5. #5
    Regular Member phykell's Avatar
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    The exhaust deposits gunking up the unit and the inlet are such an obvious and common problem that you'd think Vauxhall would include a periodic cleaning as part of the standard service.

    What about the boost sensor then? Is that something I could do with cleaning as well, just in case?

  6. #6
    Regular Member phykell's Avatar
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    Just rang my local Vauxhall dealer and they have suggested the following part number:

    55215031

    Apparently, this is a modified version of the original 55194735 part and is priced around £125; but they've had them on back-order for three weeks already!

    Does anyone know what the "modification" is?

  7. #7
    Regular Member lofty's Avatar
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    Vehicle : Vectra C Estate

    Trim : Elite

    Engine : 1.9 CDTi


    Default

    probably just includes that partially blanked gasket that's in another thread.

  8. #8
    Regular Member phykell's Avatar
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    I just hope it doesn't need an engine management software update for the new EGR.

    I'm definitely going to fit a new one and keep the old one as a spare. Just have to source one now

  9. #9
    Regular Member keithsimmo's Avatar
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    Default EGR

    Please try this Solenoid side cleaning of the EGR first. It resolved my issue the same as yours. The pin was moving on mine freely but once stripped and cleaned it resolved my issue stright away. It's worth a bash is'nt it? Only took an hour to do.

    http://www.vectra-c.com/forum/showthread.php?t=45867

  10. #10
    Regular Member Phil MC's Avatar
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    Default

    The solenoid strip/clean also sorted my car's similar problem today.

    Please give it a try before you go out and order up any replacement parts.

    Cheers,

    Phil C

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