high speed fuel pump sleuthing 9-3 2007

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Thread: high speed fuel pump sleuthing 9-3 2007

  1. #1

    high speed fuel pump sleuthing 9-3 2007

    My mystery, and choose your own adventure, if you choose to aceept.

    The story starts one morning, a warm 12 degrees in Melbourne. Turn the car over it starts but only gets to about 800 revs and dies, repeat times 5 and the bus becomes the next option. At this point i did have approx 50km in the tank car on a slight angle, low fuel....mmm. So put an extra 20 ltrs in, same outcome. Almost like it's not getting fuel, so this leads me on a path. The fun begins, pack snacks if you choose to turn the page. The next bit, like a demtel add has been fast forwarded for the purposes of not boring everyone, replace fuel filter, confirmed fuel not contaminated, confirmed fuel pump sprays a like a happy dog, changed sensor on tank but alas no change or outcome. What do they say, try a 1000 things and get the same outcome makes you an idiot, or at least i think that's how the frustrated home mechanic thinks. When testing the pressure from the common rail and turning over, the fuel limps out, aha, aha, maybe source of problem. Low pressure or non from high pressure fuel pump. At this point, this home mechanic knows he's out of his depth and specialist tools.

    my challenge, and OBD-II tool shows no errors, surely a low fuel flow would be picked up by the tool or the car self checks would pick up an engine warning at the sensors in the common rail and/or high flow fuel pump? Before i do down the road of paying a mechanic to replace the high flow diesel pump, could it be as simple as a sensor, how would i know or test this.

    Please lend me your thoughts. I promise all replies will come with dad humor and dull wit.
    Last edited by mjs0901; 03-05-2019 at 07:28 PM.

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  3. #2

    Re: high speed fuel pump sleuthing 9-3 2007

    The fun of not being able to define the root cause of an issue, and a guess it is the high flow diesel pump. Might as well do the cam belt at the same time as the pump, so from a wreck on 75,000km i';ve been quoted car parts are cam belt $90, pulleys $300, water pump $165, fuel pump $275, labor $1100. Because it's not running, i need to get it towed, always good to join the RACV as free towing for 20km on a basic $110 yearly policy on road side assistance. The bugger thing is once you tow to a place, they have you by the scrotum, unless you go i want to get a second opinion and then tow to a new place. I might call for a free road side assistance and see what Mr RACV man says and recommends. The mobile saab man can't tell me and said it needed to go to a workshop as recommended by him, given i don't know him from a bar of soap, what are the chances they are looking to send their kids to private school with my car repairs.

  4. #3

    Re: high speed fuel pump sleuthing 9-3 2007

    Hello, ref your obd reader , not all generic readers will flash up a code , so that coukd be the answer to that puzzle, when you turn the ignition on can you hear a slight werring noise for about 10 seconds? .
    Now not knowing much about thease mechanically, on some there is a senior on the end of the fuel rail unplug that and check condition of terminals on the plug , or I think there's one near the high pressure pump .
    The time before this happened was it starting ok ?
    MSD REGISTER 26101 NOCTURNO-BLAU-MET

  5. #4
    Saab Afficionado
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    Re: high speed fuel pump sleuthing 9-3 2007

    Sound like the car is in limp mode invest in Opcom for the 1.9 TID that will give you the codes and readbacks to work with and download the WIS over in the Tech2 section on Saabcentral.
    Dont play darts with parts get a proper diagnosis!
    The high pressure pump is mechanical and driven by the cambelt.
    If the car starts at all you dont have a cambelt issue.
    The sensor for the pump may be the problem...but its guesswork...get the codes!
    https://www.ebay.com.au/itm/OP-COM-OPCOM-V1-45-With-PIC18F458-OBD2-Opel-Scanner-Diagnostic-tool-7/323126750795?hash=item4b3bdaee4b:g:1HUAAOSwhsVaoQc L

    Last edited by cjapeterborough; 03-06-2019 at 09:07 AM.

  6. #5
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    Re: high speed fuel pump sleuthing 9-3 2007

    As cj says, diagnose first. I am not rich and I do all servicing myself, so follow cj's referal of the ebay OPCOM. It seems ridiculously cheap. I paid $99US for a Bluedriver (which I'm not sure, but I don't think it will do what the OPCOM does?).
    Apart from that your second hand parts for the belt/waterpump bits are waay overpriced. I'm in NZ, I made up an order plus other bits to spread the freight cost. Onlinecarparts.co.uk (German company!!??) The best quality brands of stuff (huge variety), and at least you know they are new. Especially that water pump, they do fail and they must be right. Did I read that right, $165AU for a second hand water pump!!!!!

  7. #6

    Re: high speed fuel pump sleuthing 9-3 2007

    Hello Tones9-3 , I don't know what you mean by second hand , ( is that terminology for patterned part ?) but I don't think anyone would try to sell a second had water pump ( I'e used ) it's like selling a second hand condom ( it's bound to fail ) .
    I don't know what the exchange rate is but over here you can get this complete cambelt kit inc water pump .
    https://www.ebay.co.uk/itm/Timing-Be...IAAOSwkHxcRI05
    MSD REGISTER 26101 NOCTURNO-BLAU-MET

  8. #7
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    Re: high speed fuel pump sleuthing 9-3 2007

    If the car starts then there is nothing wrong with the cambelt.
    If the cambelt has slipped or wont start you will get an camshaft sensor error.
    You can also remove the timing belt cover -have a dozen torque screws and take a look...you will soon see if it has failed.
    A full Dayco or Gates timing belt including water pump should be around £80.
    There is absolutely no way you should consider fitting used timing belt parts!
    No idea on exchange rates but...
    https://www.ebay.com.au/itm/TIMING-B...0AAOSw9~5bvgUE

  9. #8

    Re: high speed fuel pump sleuthing 9-3 2007

    when is a reader, not a reader, when it doesn't read?? i've decided to order one as per cjapterborough advice. By slight werrring noise, i'm guessing you mean the fuel pump off the fuel tank, you can also check by opening the fuel cap and hearing it by getting someone to turn over the key. I've also confirmed that the pump works as when you loosen the fuel filter and start the car, fuel comes spraying out. It's the high flow diesel that is my biggest question. The sensors remain a question mark but with no engine indicator or codes, this remains an ongoing mystery. The previous drive and start was all normal.

  10. #9
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    Re: high speed fuel pump sleuthing 9-3 2007

    When is a reader not a reader?
    When it doesnt support the required communications protocols of which there are many...a basic OBD2 reader will only enable a few engine P type codes.
    Over the year car manufacturers have worked hard to protect service revenue and force you to go back to them for every little problem.

    Get to know the layout of your car.

    The engine is a Z19DTH and common to many vehicles.

    If you want to know how to change timing belt etc

    https://www.youtube.com/watch?v=jW_-JVAuHZI

    This guy is using Opcom on his equivalent Vectra for fuel problems.
    https://www.youtube.com/watch?v=W2jFVUt-81I

    The fuel metering solenoid valve for the HPFP is shown around 4.35
    https://www.youtube.com/watch?v=wD6BNZV6QBE

    Last edited by cjapeterborough; 03-08-2019 at 05:15 AM.

  11. #10

    Re: high speed fuel pump sleuthing 9-3 2007

    Today is the day my Op-com arrived, waiting for this day a while. the old mini disc, had to drag out an old laptop with tray to load the disk. Don't make the mistake i once made and try and put a disk in without a loading tray, hint it just gets stuck in there and you have to take the laptop apart to get the bugger out, or so i've heard. The old laptop hasn't seen daylight for a while so battery needs charging, the excitement of an old lenovo t400 charging, good thing i've got all night. In the mean time loading the saab WIS setup and electronic parts catalogue.


    part 2, 2hrs later, all been fun. So my pc doesn't recognise the usb device error 52, microsoft device signing verifying I HATE MICROSOFT. So editing my registry, current attempting start up repair, dam my laziness and not backing up the registry...... this shit is never straight forward, all i wanted to do was find the error codes.... to be continued when i get past this shit head problem.

  12. #11
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    Re: high speed fuel pump sleuthing 9-3 2007

    When you finally get the Opcom driver loaded...it can be tricky depending on which OS you are using...you also may have to configure Opcom as a Vectra C instead of Saab.
    We await developements!

  13. #12

    Re: high speed fuel pump sleuthing 9-3 2007

    so, my drivers are ok now. Had to get past the microsoft verification issue (insert 546th google search), run a diagnostic connection test and happy. When it checks the interface reads "disable SWCAN, Switched to DWCAN... Pin #6,#14 switched to HSCAN...then the got ya, "Interface communication error, or interface not powered from car!" car is in the on position, one before turning over the engine.

    The story continnues. Next challenge get past the interface communication error....

  14. #13

    Re: high speed fuel pump sleuthing 9-3 2007

    hold the fort, just saw vectra c configure, will run out and try

  15. #14

    Re: high speed fuel pump sleuthing 9-3 2007

    bugger, so in plugging in and out and the comms error thought i'd try the old plug the usb cable in and out. What does it do.. bastardo has uninstalled the opcom v 2 drivers and changed it to USB serial converter driver, and now the interface doesn't speak, I've got the old "install usb drivers" wanker, uninstalled the correct ones and installed a generic driver. It's got the better of me tonight, next after work installment. I will not be defeated.......

  16. #15
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    Re: high speed fuel pump sleuthing 9-3 2007

    Which OS Windows 10?
    I am using FTDI driver 2.8.20.0 dated 08/07/15.
    Test interface first no plugged into car....setting...test interface....should get results screen firmware version etc
    Last edited by cjapeterborough; 03-18-2019 at 11:19 AM.

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