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Thread: Boost Sensor - Where is it ?

  1. #1
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    Default Boost Sensor - Where is it ?

    Using the very good How2 section I have removed and cleaned the Egr Valve on my 2003 2l dti. I still have a problem with the "yellow spanner indicator" but not as often as before I cleaned the valve (and I can still put it out, most times, by reving to max -2500 - then cruising). I suspect that I may need to take it out and clean it again (used Carb Cleaner) but thought I would also do the boost sensor. Can some one tell me (pictures are worth a thousand words, so they say) exactly where the boost sensor is please ?

    Great forum, nice people. Thanks

  2. #2
    Regular Member cossiejay's Avatar
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    Vehicle : vectra

    Trim : sri 150

    Engine : 1.9 cdti

    Year : 2007

    Default

    as far as i know it is in the top cover for the egr valve

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    on the dti the boost sensor is located on the inlet elbow, if you are going to clean it remove the elbow itself & clean that too...
    also check around the vac tubes & connectors for any splits

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    Default Update

    Just an update of MY experience. Many will already know of this but I thought I would update this topic.

    I took off my EGR valve, as shown in the How2 guide, and cleaned it. The "yellow spanner" went away for a couple of days and then came back.

    I then decided, as suggested, to clean out the whole EGR manifold and boost sensor, again an easy task. I just could not believe the state of the manifild. It was at covered in at least 1/4" of soot (carbon) on all surfaces. It took me ages, lots of carb cleaner and cloths to clean it. A very messy but not difficult job.

    Now all is OK. So the conclusion is , clean the EGR valve but also clean the manifold to get the best results.

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    Remeber doing when i had me dti... gunk every where, but worth it

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    Regular Member Innes's Avatar
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    You've only s ratchet the surface if you've just clean the top manifold air intake housing. It would be worth removing the upper and lower intake manifold as this is where the worst if it will be. Me and Vectra Forever have done a how2 for this.






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    Default Clean

    WOW, that's a fantastic How2. Looks too complicated for me !

    I have cleaned what I can see on the manifold but if it requires further I will let the experts do it.

    Thanks for all the work that must have gone into this How2

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    It just shows you how bad the egr really is

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    When we did my manfold we did a partial blank of the egr (a full blank will throw it into LHM) t oreduce the soot going into the manifold. I also recently fitted an oil catch tank to try and reduce the oil vapour from the breather pipe going into the induction. its only been fitted a couple of weeks so still early days as to how effective it will be.

    After the clean I noticed that the car accelerated alot more freely as it could now breath a bit better. The MPG also went up by 2mpg.

    I'll be doing a de-cat in the next few weeks/month to help it exhale a bit easier to. If reports on the forum are correct I could see 4-6 mpg increase (as well as performance if I were heavy footed).

    PS it took a few evenings to get the information for the HOW2 correct but it was worth it as doing it yourself could save £100's in labour costs at a grage. Completion time was about 4 hours (including the actual cleaning).

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