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  1. #26
    Juan AR155Q4 Guest

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    Try not using the original +12v to the heater and put some wires direct from batery to lambda probe.
    Itīs exactly the problem I had. I measured the whites and had 12v. Conect everything, and lambda was ~0.40v. External 12v and problem solved. Finally a conection of the heater was corroed.

  2. #27
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    Quote Originally Posted by Juan AR155Q4
    Try not using the original +12v to the heater and put some wires direct from batery to lambda probe.
    Itīs exactly the problem I had. I measured the whites and had 12v. Conect everything, and lambda was ~0.40v. External 12v and problem solved. Finally a conection of the heater was corroed.
    Thanks Juan, I will tell him to try this

  3. #28
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    He never did find the problem, but the car is running fine and he passed the MOT anyway although I do definately want to sort this in time.

    If you have the correct lambda number Juan that would be great.

    Also, what do we know about the fuel pressure regulator?

    He tried to adjust it but it was stuck solid and he didnt want to break it - and I needed the car back ASAP. - He suspects it could be the problem....

  4. #29
    Juan AR155Q4 Guest

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    Well, Alfajack here is the number:
    It's 4 wire Bosch from Germany 0 258 003 231.
    I think they are more differents number but don't know which is the main difference.

  5. #30
    FletchQ4 Guest

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    mine has a 3 wire

  6. #31
    Brul(tm) Guest

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    Quote Originally Posted by FletchQ4
    mine has a 3 wire
    Me too, butt originally a 4 wire lambda sensor was used.
    Found the last wire under the bommit a while ago .
    So when it's gone, i'll replace it with the original part....

    Greetings,
    Marc

  7. #32
    FletchQ4 Guest

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    so you mean mine aint right :shock: more money

  8. #33
    Brul(tm) Guest

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    Quote Originally Posted by FletchQ4
    so you mean mine aint right :shock:
    I didn't say that All i said was that mine was original a 4 wire connection.
    I now have a 3 wire lambda sensor witch works just fine

    Greetings,
    Marc

  9. #34
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    Mine is also 3 wire, i havent seen the spare wire so niot sure.

    The car did 22 miles per gallon on a motorway run yesterday (mixed driving too, involved some long moments on the boost ) so i dont think its running too rich but I will keep a close eye

  10. #35
    Juan AR155Q4 Guest

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    Quote Originally Posted by FletchQ4
    mine has a 3 wire
    I think the original one is a 3 wire. But 4 wires works fine. The difference is that 4 wires has separate negative.

  11. #36
    pitucas Guest

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    The car did 22 miles per gallon
    That's 12,84 L/100km!!!!

    Mine is "drinking" much more!

  12. #37
    Juan AR155Q4 Guest

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    I'm nearly 14L/100Km, and with a mixing driving. I think it's too much.
    Maybe we could open another thread to took about this.

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