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Thread: Ecu

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  1. #1
    Join Date
    Jul 2013
    Location
    Leeds
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    115

    Ecu

    F**********************************k!!!

    Swapped out the 6 capacitors after reading the threads on this board to try and cure a low rev misfire and now my car will not start at all!!! One of them had been leaking.

  2. #2
    Join Date
    Feb 2014
    Posts
    158
    there's an ECU on ebay, think the seller is a little optimistic with the price however

  3. #3
    Join Date
    Mar 2009
    Location
    Shropshire
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    I don't know if Rich (hughesy) has one spare or not? are the tracks on the ecu around the caps ok?

  4. #4
    Join Date
    Jul 2005
    Location
    Camberley
    Posts
    90
    If first you don't succeed, try try again. I expect you just have an iffy bit of soldering, or possibly duff capacitors, or the polarity wrong. Try resoldering it, and then checking the connection with a multimeter. Also, are you sure you've gotten the capacitors the right way around? They are polarized.
    ! Stuei

  5. #5
    Join Date
    Jul 2013
    Location
    Leeds
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    Yes I saw the ebay ECU. I'd rather try Honda for a new one at 500 than risk my money on that one.
    I have taken a day or two off from the ECU to relax a little. Yes I know they have polarity, and I thought I had them all the right way round. But sometimes in a disappointed state mistakes can be made so I will check again. Then check the soldering and test the caps.
    Tracks seem ok but again, I shall check.

    Cheers for your replies guys

  6. #6
    Join Date
    Jul 2005
    Location
    Camberley
    Posts
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    Re the polarity, you can tell if it is the right way because of the wider stripe down the capacitor. You can use a reference picture such as this http://blogs.yahoo.co.jp/nowi64/32331325.html to see if yours are correct.
    ! Stuei

  7. #7
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    Knowledge.
    Sorry for my ignorance before I start.
    Had the capacitors and a small section of track repaired. Replaced the ECU. Nothing. Engine turns over but will not fire up.
    Removed a plug and a spark is present. Dropped small amount of fuel into cylinder. Replaced plug and still nothing.
    Any ideas appreciated people.

  8. #8
    Join Date
    Jul 2005
    Location
    Camberley
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    90
    Pull an injector and see if it is firing.
    ! Stuei

  9. #9
    Join Date
    Jul 2013
    Location
    Leeds
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    Pull an injector eh? Lol.
    I may add that I am an absolute novice when it comes to engines.
    I have removed the plastic injector cover to expose the wiring loom. What next?

  10. #10
    Join Date
    Jul 2005
    Location
    Camberley
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    90
    OK, the Beat injectors are on a common rail, so you'll need to unbolt all three injectors so that you don't undo any of the fuel or electrical connections. Point the injectors in to a dry container and turn the engine over for a few seconds, you should be getting a spray of fuel from each. Please remember that this is petrol, so don't crank it forever as you will be sending a combustible spray in to the air which could catch fire.

    As you know you have a spark, the only other variable (provided you have not changed anything else) is the fuel. If you are not getting any fuel then it is likely that you have an ECU issue.

    The other option is to borrow an ECU from another Beat. If it works you know that the ECU is the issue, and as it was (largely) working before the repair you'll know that the repair is the issue.

    Re swapping another ECU, do you know any other Beat owners near Leeds?

    Stu
    ! Stuei

  11. #11
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    Top man Stu,

    I'll give it a go and get back to you.
    No Beat owners near to me now that I know of to be honest.

    Dave

  12. #12
    Join Date
    Feb 2014
    Posts
    158
    Quote Originally Posted by stu g View Post
    OK, the Beat injectors are on a common rail, so you'll need to unbolt all three injectors so that you don't undo any of the fuel or electrical connections. Point the injectors in to a dry container and turn the engine over for a few seconds,
    woah there. the fuel rail bolts to the intake and the injectors are sandwiched between them. if you unbolt the fuel rail there is nothing stopping the injectors firing out of the fuel rail and soaking you in fuel when you key on

  13. #13
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    The relay clicks as it should.

  14. #14
    Join Date
    Oct 2006
    Location
    Pye Green/72800 France
    Posts
    575
    so you've got sparks, relay clicks next step i guess is to check if Pump is working?
    check the fuses in rear fuse box as well.
    remove fuel feed pipe and place end into can/jar and make sure you're getting fuel to injector rail. easier than trying to check ECU

  15. #15
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    I checked the three blade fuses in the rear and they are all good. I will check everything else you have mentioned.

    Seventynine, I didn't intentionally ignore your advice re the injectors, I just acted before I had read your advice.

  16. #16
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    Removed the fuel supply to the injector rail and turned the ignition. No fuel issued. ECU fault? If so any pointers what to do next please?

  17. #17
    Join Date
    Apr 2017
    Posts
    35
    Hi dave, sounds like fuel pump to me, I may be a novice on these cars, but 'tis just mechanics.
    This one I just bought wouldn't start. I did the whole easy start into the throttle bodies thing. It fires and splutters while spraying. The fuel relay is clicking, so I pulled the fuel pump out of the tank, wired it to a battery off the car direct and it's dead. I ordered one off fleabay for 30€, should be here today. Will let you know the outcome when it arrives. When you pull the pump out of the tank, release the six securing nuts first and break the seal, this stops any expansion pressure in the tank. If not when you disconnect the banjo nut fuel will gush out, especially if it's a hot day! Like it was when I did mine.

  18. #18
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    Good news / bad news. I have checked the fuel pump and it seems to be working fine, but it still won't start.
    Any more ideas appreciated please.

  19. #19
    Join Date
    Feb 2014
    Posts
    158
    tried putting 12v directly to the fuel pump and trying to start it?

  20. #20
    Join Date
    Jul 2013
    Location
    Leeds
    Posts
    115
    We have a runner people!!! The ECU doctor in Plymouth has returned the ECU, I've put everything back together and it runs lovely.
    I'm 193 worse off, but driving with a smile tonight in the Spring sunshine.
    Thank you all for your help in this matter.

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