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  1. #1861
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    Bad immobiliser? Not sure if it cuts the fuel pump relay or spark though

    You say there's no voltage actually coming from the ecu?
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
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  2. #1862
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    Quote Originally Posted by JT View Post
    Well swapped out the grey relay attached to the rad from a working car
    And it still wonít pull in the fuel pump relay

    Guess Iím gonna have to go deeper
    It's looking that way, make sure the wires to them are ok as they tend to break up and corrode over the years, don't know why I'm telling you that, with your line of work ...lol

    Current Volvo's 1995 854 Gul T-5R 1996 855 Olive T-5R 1997 855 Olive AWD 1999 V70R AWD and 2005 XC90 D5 AWD
    Previous Volvo's 1987 745 gle 1989 745 GL 1995 855 Olive GLE 2001 V70 p2
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  3. #1863
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    Quote Originally Posted by Dangerous Dave View Post
    Bad immobiliser? Not sure if it cuts the fuel pump relay or spark though

    You say there's no voltage actually coming from the ecu?
    Nothing on the grey/yellow cable from the ecu

    Didnít think the TT used an immobiliser? Never had this problem before?

  4. #1864
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    Quote Originally Posted by MoleT-5R View Post
    It's looking that way, make sure the wires to them are ok as they tend to break up and corrode over the years, don't know why I'm telling you that, with your line of work ...lol

  5. #1865
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    Maybe check the ecu socket to see if there are any issues.

    Then test power and grounds to the ecu.

    Here is a signal description list of what the pins should be with ignition on and when idling
    https://www.matthewsvolvosite.com/fo...e.php?id=12185
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

  6. #1866
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    cheers Dave, I will study that later.

    thoughts on this:

    If I put an IGN feed to the fuel pump, the car will start and run.
    can I just do that? anyone see any issues with that set up?

    obviously would need to start the car once the IGN is switched on, so the fuel pumps are not left running for too long without the engine running
    Last edited by JT; Sunday 10th April 2022 at 20:23.

  7. #1867
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    Can't see it being an issue. Have it on a switch on the dash labelled up.
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

  8. #1868
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    Quote Originally Posted by Dangerous Dave View Post
    Can't see it being an issue. Have it on a switch on the dash labelled up.
    Exactly what I was thinking

  9. #1869
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    Proper race car style!
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

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    JT (Tuesday 12th April 2022)

  11. #1870
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    https://youtube.com/shorts/BCOqQxCOGWs?feature=share

    Well the separate switch works, which is good

    Just something in the back of my mind saying is wrong lol

    Oh the fuel pump relay somehow has water damage, even though itís inside the car
    Maybe thatís taken out something in the ecu?? Food for thought
    Last edited by JT; Thursday 14th April 2022 at 20:40.

  12. #1871
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    You said you'd tried 2 ecu's unless it fried both of them?

    Guessing it maybe shorted and sent high current through the ecu.

    One way to test it is to try those ecus in another Volvo...
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

  13. #1872
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    Quote Originally Posted by Dangerous Dave View Post
    You said you'd tried 2 ecu's unless it fried both of them?

    Guessing it maybe shorted and sent high current through the ecu.

    One way to test it is to try those ecus in another Volvo...

    Would they work on an auto? Have access to one of those

  14. #1873
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    Quote Originally Posted by JT View Post
    Would they work on an auto? Have access to one of those
    Only one way to find out....
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

  15. #1874
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    Both my TT and OEM ECUs started and ran the auto

    Must be something else

  16. #1875
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    Quote Originally Posted by JT View Post
    Both my TT and OEM ECUs started and ran the auto

    Must be something else
    Well that's good news, Not that I've ever tried an man ecu in an auto, but my understanding was that auto ecu's work in manuals and auto's (and that is true as both my factory manual T-5R's are currently running auto ecu's), but manual ecu's only work in manuals, but as above I've never tried them. I still think there must be a break/corrosion in one of the harness leads or possibly a faulty earth, but hey it's running so that's the main thing, whens your first track outing then JT...???

    Current Volvo's 1995 854 Gul T-5R 1996 855 Olive T-5R 1997 855 Olive AWD 1999 V70R AWD and 2005 XC90 D5 AWD
    Previous Volvo's 1987 745 gle 1989 745 GL 1995 855 Olive GLE 2001 V70 p2
    My Ebay Items http://www.ebay.co.uk/usr/quik.connection

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    JT (Saturday 23rd April 2022)

  18. #1876
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    At least you know now the ecus aren't at fault.

    Interesting one, as Moley says, must be a bad wire somewhere.
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
    2004 Sapphire Black S60 D5 - The new daily hack.

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    JT (Saturday 23rd April 2022)

  20. #1877
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    Quote Originally Posted by MoleT-5R View Post
    Well that's good news, Not that I've ever tried an man ecu in an auto, but my understanding was that auto ecu's work in manuals and auto's (and that is true as both my factory manual T-5R's are currently running auto ecu's), but manual ecu's only work in manuals, but as above I've never tried them. I still think there must be a break/corrosion in one of the harness leads or possibly a faulty earth, but hey it's running so that's the main thing, whens your first track outing then JT...???
    First outing was back in sept at Abingdon, which was different,
    and then a day Brands in Nov.
    Hoping to get back there in May..........

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    Moonpiemagic (Monday 25th April 2022)

  22. #1878
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    There are couple of track days added to the calendar at Goodwood for this month and may, if you are looking.

    Would be cool to see these flying around the goodwood track, im just down the road from there.

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    JT (Wednesday 27th April 2022)

  24. #1879
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    Quote Originally Posted by Moonpiemagic View Post
    There are couple of track days added to the calendar at Goodwood for this month and may, if you are looking.

    Would be cool to see these flying around the goodwood track, im just down the road from there.
    I would love to do Goodwood one day, but as we don't race there, kind of seems a bit odd to test there.
    Maybe in the future, if everything falls into place

  25. #1880
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    So far I have booked May 10th at Brands for a trackday
    and pencilled in August 6th at Brands for my one and only race weekend this year, fingers crossed.

    Will try and get another trackday in July if I can


 

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