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Thread: Freelander fuel pressure sensor problems

  1. #1

    Default Freelander fuel pressure sensor problems

    Can anyone help?? I have a TD4 which has had problems over the last few months. Had 4 injectors changed plus LP fuel pum which sorted out the original issues. Since then I notice mometary surges/ power loss when driving, not all the time mainly noticeable when backing off the pedal rather than putting it on. This culminated last week when it died on me. ECU said no fault but RAC traced it back to fuel pressure sensor - when you wiggled the wires connected to the senor the engine either started or cut out so it seemed like this was the problem. I had the fuel pressure sensor changed immediately and initally seemed fine until engine got up to temp after 10mins then it began pinking/knocking. This was put down to overfuelling and faulty sensor (wiring wasnt replaced incidentally) Another new sensor fitted a day later, again all seemed fine on quick test run but then when I drove it for 10 mins or so the same pinking noise which seemed to come in at around 2500 rpm, eventually engine light flickered and major pinking noises (I mean major!) and the car died. Have taken it back to the garage who fitted injectors, there are no fault codes so its headscratching time! It hasnt ever had petrol in it, only diesel (this was questioned) It's doing my nut, I need the FL for towing and its causing me no end of grief at the mo!

  2. #2
    Freelander Specialist Chaser's Avatar
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    Default Re: Freelander fuel pressure sensor problems

    I assume from your post you are aware of the wiring issue with the Td4s fuel pressure sensor. Have you had the harness replaced or checked the existing harness and plug for any corrosion or breakages?
    Chaser.
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    Similar faults appear on similar vehicles and have often been discussed before, so if you havenít already, please try some search terms in the 'search' feature at the top right of the thread list.

    Responses are submitted for discussion and analysis and are not intended to be definitive. Although I do my best I cannot guarantee the accuracy of the information given.

  3. #3

    Default Re: Freelander fuel pressure sensor problems

    Hi. The wiring loom & plug wasnt replaced with the sensor. When the new sensor was fitted and the wires were wiggled around, the engine didnt cut out like it did with the old sensor so the garage assumed wiring was ok. I did question if it could be the wiring that could be the problem when the new sensor was fitted but was told they had checked (scoped?) the wiring and it was ok. Do you think it could be the problem?

  4. #4
    Freelander Specialist Chaser's Avatar
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    Default Re: Freelander fuel pressure sensor problems

    It does seem likely but there are no guarantees. Sometimes cleaning the contacts is enough which is why it can appear OK for a while after changing the sensor, others need the new harness. Can you get any change when moving the wiring about now the problem has returned?
    Chaser.
    ________
    Similar faults appear on similar vehicles and have often been discussed before, so if you havenít already, please try some search terms in the 'search' feature at the top right of the thread list.

    Responses are submitted for discussion and analysis and are not intended to be definitive. Although I do my best I cannot guarantee the accuracy of the information given.

  5. #5

    Default Re: Freelander fuel pressure sensor problems

    Thx Chaser will get them to give it a go tomorrow

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