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Thread: Change MAF sensor

  1. #1
    Regular Member Longdude's Avatar
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    Exclamation Change MAF sensor

    Hello everyone,

    Recently I had to change my DMF, EGR valve and intake manifold due to malfunction.
    I was expecting a better smoother driving car (19 DTH 150 BHP), but it wasn't.
    A couple of years ago I owned a Zafira 2.0 Dti, at some time the MAF sensor failed and I had to change it. This made a huge difference, the car was running much better!
    Now I'm wondering if I would change my MAF sensor, would it make a difference. There are no engine lights coming on, so as far as I know the MAF sensor is still ok. Has anyone done this before?

    The original Bosch MAF number under the bonnet is 0281 002 618, the date on the MAF is 2004-06. My car is build in 2004 so ths means that the first MAF is still in. According to Bosch customer service in Holland the number is now 0281 002 683, so the ***618 and ***683 are exactly the same.

    Please let me know, the price of this MAF is GBP 150,-

    Regards, Arjan

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    Hi,

    What are the symptoms of the problem you are trying to cure?

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    Regular Member Longdude's Avatar
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    I don’t have the feeling that I’m driving a 150 BHP/320Nm diesel car. For some reason I think changing the MAF will help a lot. But before buying a new MAF I hope someone has the experience

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    try this first:

    http://www.vectra-c.com/forum/showthread.php?t=88845

    made a big difference on my 1.9[150]

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    Regular Member Longdude's Avatar
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    I've tried that. Only I did not use carb cleaner (is this for cleaning breakes?)

    No spectacular results though

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    carb cleaner is for cleaning carbs, throttle bodies..
    brake/clutch cleaner is similar but not quite the same.
    iirc carb cleaner can leave a slight residue on brakes.

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    Regular Member Longdude's Avatar
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    Quote Originally Posted by johnsav View Post
    carb cleaner is for cleaning carbs, throttle bodies..
    brake/clutch cleaner is similar but not quite the same.
    iirc carb cleaner can leave a slight residue on brakes.
    Aha I know what you mean now, I've checked the local carshop and they sell this for a few euro's. Ive cleaned my boostsensor carefully with a toothbrush (from my daughter ), placed it back and noticed no difference. Still the manifold was changed in May of this year and is brand new. The boost sensor was very dirty though (incredible after 3 months).
    I don't drive fast, but we went to Italy on holiday and this was 3000 miles.
    I'm still curious if changing the LMM will make any difference.

  8. #8
    Regular Member Longdude's Avatar
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    Quote Originally Posted by Longdude View Post
    Aha I know what you mean now, I've checked the local carshop and they sell this for a few euro's. Ive cleaned my boostsensor carefully with a toothbrush (from my daughter ), placed it back and noticed no difference. Still the manifold was changed in May of this year and is brand new. The boost sensor was very dirty though (incredible after 3 months).
    I don't drive fast, but we went to Italy on holiday and this was 3000 miles.
    I'm still curious if changing the MAF will make any difference.
    Anyone noticed a big difference after changing the MAF sensor????

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    Best thing to do would be to connect up a tech2 and read any fault codes, most decent mechanics have the kit and should read out the codes for 20 odd quid if you ask nice.

    if you get a code reading maf voltage low or lambda sensor etc then you will know what to replace.

    generally speaking though if the car is running smooth and happy a lack of power is probably just a subjective thing compared to other cars you've driven.

    if you always drive slow though there may be a load of crapy deposits blocking up the exhaust.

    drive down the motorway at 70mph in 3rd for 5 mins after having thoroughly warmed the exhaust all the way through (say on the tail end of a 20-25 mile trip) then stamp your foot to the floor (you've got another 10mph before you hit the redline) you may find a big cloud of black smoke go poof out the back. this should be effective at clearing any old carbon deposits out of the exhaust. - I cannot be held responsible for you blowing up your engine if you do this wrong!!!!!

    It could well be the MAF that is at fault, if there is a fault, but equally it may not - you might be wasting £150 by replacing it... that being said if you spend £150 on a new maf and it makes no odds you can probably flog it again on ebay for £120...

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    Regular Member Longdude's Avatar
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    I don't have any fault codes.

    Blocking exhaust? There allways will be some carbon deposits on the inside of an exhaust, but not so much it will effect the engine power. Only when the exhaust is blocked for 70% with carbon, but thats not possible. If I want to blow up my engine I will remember your advise.... I'm sure this will cause more damage.

    I don't have any problem with my car right now, I'm just curious if changing the MAF would make a big difference.

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