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Focus jerking when driving

  • 30-12-2016 09:46PM
    #1
    Administrators Posts: 55,229 Admin ✭✭✭✭✭


    This post has been deleted.


«1

Comments

  • Closed Accounts Posts: 2,880 ✭✭✭shietpilot


    When was the last time you changed your fuel filter?


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


  • Registered Users, Registered Users 2 Posts: 24,519 ✭✭✭✭punisher5112


    Clean out egr valve if you can't take apart get egr valve cleaner you need 2 for this as one needs to keep revs at around 2.5 when engine is hot only can you do this.

    Service the car?
    Fuel filter is also a good tip as above and air filter check it.

    I know may not be but my Mondeo sucked in a water bottle lable and was blocking air flow at air filter.


  • Registered Users, Registered Users 2 Posts: 5,338 ✭✭✭mullingar


    Are you 100% sure the fuel filter was also changed?

    Also, 1.6 or 1.8?


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


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  • Registered Users, Registered Users 2 Posts: 408 ✭✭DubInTheWest


    It could also be the fuel pump on the way out. Same thing happened to me many years ago. Started to jerk and one day just cut out altogether. IIRC I picked up a second hand one from the breakers yard and my mechanic installed it. It was a focus too. I used to let the fuel go right down, he told me to stop doing this as any dirt in the tank can cause problems for pump.

    Good luck


  • Registered Users, Registered Users 2 Posts: 24,519 ✭✭✭✭punisher5112


    It could also be the fuel pump on the way out. Same thing happened to me many years ago. Started to jerk and one day just cut out altogether. IIRC I picked up a second hand one from the breakers yard and my mechanic installed it. It was a focus too. I used to let the fuel go right down, he told me to stop doing this as any dirt in the tank can cause problems for pump.

    Good luck

    Good advice never good to let into red.


  • Moderators, Business & Finance Moderators, Science, Health & Environment Moderators, Society & Culture Moderators Posts: 51,685 Mod ✭✭✭✭Stheno


    Good advice never good to let into red.

    Yep once i get to quarter full i fill up


  • Registered Users, Registered Users 2 Posts: 24,519 ✭✭✭✭punisher5112


    Stheno wrote: »
    Yep once i get to quarter full i fill up

    Ever fill in a dodgy place?


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


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  • Registered Users, Registered Users 2, Paid Member Posts: 2,155 ✭✭✭pm.


    "Focus jerking when driving"

    The dirty b@stard :)


  • Registered Users, Registered Users 2 Posts: 24,519 ✭✭✭✭punisher5112


    awec wrote: »
    Fuel pump and egr valve, are these easy things for a mechanic to diagnose as clearly being the problem? Or is it one of those trial and error things?

    Should be easy enough I would check egr 1st if I were a betting man


  • Closed Accounts Posts: 2,880 ✭✭✭shietpilot


    Should be easy enough I would check egr 1st if I were a betting man

    If EGR was the problem OP would be seeing clouds of smoke when it's jerking.


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


  • Registered Users, Registered Users 2 Posts: 24,519 ✭✭✭✭punisher5112


    shietpilot wrote: »
    If EGR was the problem OP would be seeing clouds of smoke when it's jerking.

    That really depends on driving style.

    Girlfriend drives with a light foot so no smoke and no proper driving.

    Me smoke at every change but I do that on purpose of course.


  • Closed Accounts Posts: 2,880 ✭✭✭shietpilot


    awec wrote: »
    Wouldn't be able to see those when I'm driving.

    I've been googling the symptoms of a clogged EGR and a dying fuel pump and it sounds like the fuel pump fits the bill perfectly. Sputtering at high speeds especially when under stress.

    I'll be dropping it into a mechanic so I'll probably ask him to look at both anyway, cleaning EGR seems a fairly trivial task. Just wanted a rough idea of what could cause it.

    Much would a fuel pump cost? Couple of hundred?

    I think I got the EGR valve cleaned a few years ago.
    That really depends on driving style.

    Girlfriend drives with a light foot so no smoke and no proper driving.

    Me smoke at every change but I do that on purpose of course.

    If it was bad enough to cause "jerking" you would see plumes of black smoke if the EGR is intermittently sticking. Sounds like a fueling issue to me anyway.


  • Registered Users, Registered Users 2 Posts: 1,631 ✭✭✭Newtown90


    Have a 1.6 2009 Focus myself and had bad jerking issues myself when I bought it. Really pissed me off as it's majorly annoying. Googling it I had self diagnosed the DPF and EGR valve needed replacement.

    The dealer couldn't seem to find the issue so took it to a different local garage guy, cleaned all connections, took it for a spin, no jerking! and 18 months later still haven't had the issue.


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    Delete them both, it's not like the hopelessly inadequate and outdated NCT tests will catch you on them.


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


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  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    awec wrote: »
    Well the jerking is annoying and pretty disconcerting when you are driving so I'd like that fixed.

    Though he says it won't actually cut out or die.

    Sorry - I meant delete both the DPF and the EGR themselves, not the associated codes which will come back unless your problem is "rectified" permanently.


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    awec wrote: »
    Is that legal?

    I don't believe that there is ANY offence that you can be charged with as a result.

    It will pass NCT.
    It will use less fuel.
    It will emit less CO2.
    The Green Party will worship you as a Golden GOD.

    What's not to like?


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


  • Registered Users, Registered Users 2 Posts: 7 Robbie_G


    DPF are self cleaning unless your granny driving around a town only , as you do some motor way driving and speed it will self clean so wouldnt say its that , possibly the EGR but normally would get a warning light but no harm having it cleaned anyway .
    it sound more like fuel starvation , so could be fuel pump or injectors either .

    Dont remove your DPF , it is illegal , there is no garntee it was pass a NCT ( i know people who failed and has to pay around €1300 to install a new one ) , it produces more CO2 and more harmfull gasses if removed .


  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    awec wrote: »
    There must be a downside, otherwise mechanics everywhere would just be stripping these things out at the first sign of trouble?

    I'd like to see how many insurance claims have been voided as a result of undeclared "performance enhancing modifications".

    I doubt there's many. It's them old japanese petrol cars are the problem for insurance. But you'd never know with insurance!


  • Registered Users, Registered Users 2 Posts: 7 Robbie_G


    Oh and you wont be covered in the event of a crash as it classed as a illagal modification


  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    Robbie_G wrote: »

    Dont remove your DPF , it is illegal , there is no garntee it was pass a NCT ( i know people who failed and has to pay around €1300 to install a new one ) , it produces more CO2 and more harmfull gasses if removed .

    Citation needed on most of that (bar the friend story).

    How exactly does it increase CO2?

    What is the offence you can be charged with?

    Nct is visual inspection only. They want to see something that looks like a dpf. There is NO test of diesel emissions equipment functionality.


  • Administrators Posts: 55,229 Admin ✭✭✭✭✭awec


    This post has been deleted.


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  • Closed Accounts Posts: 7,540 ✭✭✭Special Circumstances


    Robbie_G wrote: »
    Oh and you wont be may not be (there are no stats to suggest anyone hasn't been) covered in the event of a crash as it classed as a illagal an undeclared modification

    FYP.


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