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Speedometer on a Polo

  • 23-03-2011 11:39pm
    #1
    Dubh Geannain
    Registered Users, Registered Users 2 Posts: 3,553 ✭✭✭


    My Gfs 2002 Polo has been a disaster since we got it and I refuse to put any more money into it. I won't go into everything that's gone wrong it it since she got it 2 years ago, but thankfully I've managed to fix a few of the things myself, that were within my very limited skill range. Can't afford to replace it at the moment so we have to persevere.

    Anyway, the speedometer falls back to zero quite regularly, particularly when in 4th gear. For how long it's been doing that I'm not quite sure, but I know it must have an effect on the odometer (the low mileage was one the reasons we went for it in the first place :rolleyes:) It's been tolerable but seems to have gotten worse in the last couple of months.

    Coupled with this the oil light comes on when there is plenty of oil in the engine. The sensor has already been replaced once. And now the fuel gauge is dropping up and down triggering the fuel alarm every now and again.

    Any suggestions for what I can do to try an fix this? Would a replacement dashboard display from a breakers do the trick?


Comments

  • #2
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    If yours is a 9N polo(02-05) then you can't just change the clocks as they have to be programmed to the cars ecu. Also, not wanting to worry you too much, but if the dash clocks fail completely the car won't start!

    They are a horribly unreliable car, I could hazard a guess that you have had trouble with lambda sensors/cat, wishbone bushes, timing chain/tensioner, electric wondows/mirrors etc.....


  • #3
    Slidey
    Closed Accounts Posts: 12,811 ✭✭✭✭Slidey


    Don't forget the pedal box..


    Sounds like it may be a dash issue


  • #4
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Slidey wrote: »
    Don't forget the pedal box..


    Sounds like it may be a dash issue

    Hatefull job.:mad:


  • #5
    Dubh Geannain
    Registered Users, Registered Users 2 Posts: 3,553 ✭✭✭Dubh Geannain


    Yep it's a 9N. That's good guesswork. You hit on a couple of things there. Sure feic it. Here's a list (probably forgetting some things):
    • Timing Chain - got Mechanic A to fix
    • Emissions Sensor (comes and goes)
    • Electric mirrors (tolerable issue)
    • Door locks - fixed myself
    • Reverse light switch -got Mechanic B to fix
    • Brake light switch - fixed myself
    • Battery - fixed myself
    • Speedometer
    • Oil sensor - Replaced once by Mechanic C and still giving guff
    • Fuel gauge
    • Window Washers - fixed myself

    Mechanic C did something too but I can't remember what it was. He did some cleaning of something (maybe the throttle body) as the car shudders while idle.

    All three mechanics said "there's something not right with that car" but none of them could put their finger on the issue or propose a solution.

    No wishbone trouble yet, but watch this space.

    When you talk about the dash clocks failing do you mean that if any one of the instruments fail completely the car won't start.
    Also if the ECU needs re-programming then am I stuck with going to a VW garage? I'd sooner set the thing alight at this stage.


  • #6
    Dubh Geannain
    Registered Users, Registered Users 2 Posts: 3,553 ✭✭✭Dubh Geannain


    Slidey wrote: »
    Don't forget the pedal box..

    Is that something to do with a hairline fracture the pedal box? A friend of mine, (who works with cars) mentioned it before and took a look. He said it was fine.


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  • #7
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Dubh Geannain wrote: »
    Is that something to do with a hairline fracture the pedal box? A friend of mine, (who works with cars) mentioned it before and took a look. He said it was fine.


    If you have a hairline crack already then be prepared. What happens is the clutch pedal mounting snaps completly off the pedal box and you get stuck with no clutch pedal and half the lower dash has to come out to replace/repair the pedal box.


    With regards to the dash clocks, lots of vags suffer from electrical issues with the clocks but the real problem arises if the ecu looses the signal from the clocks it won't allow the car to start. To replace them you don't need to go to VW but you will need someone with the correct vag software.


  • #8
    Dubh Geannain
    Registered Users, Registered Users 2 Posts: 3,553 ✭✭✭Dubh Geannain


    Nissan doctor wrote: »
    If you have a hairline crack already then be prepared. What happens is the clutch pedal mounting snaps completly off the pedal box and you get stuck with no clutch pedal and half the lower dash has to come out to replace/repair the pedal box.

    That's what he checked for. He said it was okay i.e. there's no fracture present. But the fact that could happen is shocking all the same.

    The car is NCT'd (somehow) until next year and if we can keep it on the road until then I'll be happy, so long as we're not compromising safety.

    I'll investigate VAGs further. Hadn't heard of it before. Is this what you're talking about?
    http://en.wikipedia.org/wiki/VAG-COM


  • #9
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Dubh Geannain wrote: »
    That's what he checked for. He said it was okay i.e. there's no fracture present. But the fact that could happen is shocking all the same.

    The car is NCT'd (somehow) until next year and if we can keep it on the road until then I'll be happy, so long as we're not compromising safety.

    I'll investigate VAGs further. Hadn't heard of it before. Is this what you're talking about?
    http://en.wikipedia.org/wiki/VAG-COM


    VAG = Volkswagen, Audi Group. Its the collective name for vw,audi,seat and skoda. Vag-com is one of the software programmes available alright but any garage with up to date full function diagnostic equipment can do it.


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