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Thread: CDTI 150 Boost Sensor-is this knackered?

  1. #1
    Full Member Vaux-Man-G's Avatar
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    Default CDTI 150 Boost Sensor-is this knackered?

    Hello chaps,

    I took the boost sensor out over the weekend to try and clean it up again, and it is like its corroded (best explanation), it wont clean anymore than in these pictures?

    Do you think this is a contribution to the lack of power at low rev's?

    I have tried scurbbing it with a toothbrush and have soaked it in carb cleaner, but this is the best it will get.

    YOUR COMMENTS PLEASE!!




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    Bye bye Vec B
    - Hello Siggy!

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    If it won't clean up any more then replace it

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    Regular Member Pete B's Avatar
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    I cleaned mine in White Spirit & that removed much of the build up with the help of a small paint brush - getting it well inside the unit (but be careful of the actual sensor). Try that, see if it makes any difference, either in whether you can remove any more or whether it runs better afterwards. Yours does still look quite bad, like mine was before I cleaned it.

    Although mine wasn't giving any definite specific problems, I nevertheless did notice a general improvement in low end performance after I cleaned it.

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    Full Member Vaux-Man-G's Avatar
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    I have previously tried cleaning it with Parrafin and same thing, so I though id try again, but still the same! How much are these to replace?!

    Anybody got one?

    Would this contribute to the lack of power?


    Bye bye Vec B
    - Hello Siggy!

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    Regular Member benny's Avatar
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    its plastic so wont corrode what you have there is burnt on oil wich is hard to get off .what you have to ask is how the oil is getting in ..i would start with the breather tank on the rear of the engine ....then take a look at the turbo an see if it is leaking on the intake side .........

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    Regular Member Pete B's Avatar
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    Quote Originally Posted by benny View Post
    its plastic so wont corrode what you have there is burnt on oil wich is hard to get off .what you have to ask is how the oil is getting in ..i would start with the breather tank on the rear of the engine ....then take a look at the turbo an see if it is leaking on the intake side .........
    Could be just the hard oily carbon buildup from the EGR system, the same issues that block up the EGR valve and swirl flaps. The modifeid EGR valve/manifold gasket, available from Fiat dealers, should significantly improve that particular problem.

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    Full Member Vaux-Man-G's Avatar
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    So, would this be a key player in cr4p low end performance?


    Bye bye Vec B
    - Hello Siggy!

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    This was how the boost sensor looked like on our 2.2DTi. I sprayed it with brake cleaner and it's like new. Didn't see much of an improvement in performance though.

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    Regular Member Pete B's Avatar
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    Quote Originally Posted by Vaux-Man-G View Post
    So, would this be a key player in cr4p low end performance?
    It may play a part (but many other things do as well, although from reading on here, you've probably been through trying many of them already)

    As I said above, I wasn't suffering with poor low end performance as such but on cleaning it, it looked like yours does now before I did it, there was an noticeable improvement at the low end.

    I don't know how much they are to buy new. A pity you don't know someone close to with a similar engined car (including all the others that use the same engine) that you could do a quick "try and see" with.

  10. #10
    Full Member Vaux-Man-G's Avatar
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    Should i leave it soaked for a while? Just the end part? Would that get rid of the muck or am I at risk of damaging it??


    Bye bye Vec B
    - Hello Siggy!

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