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Thread: Problem with Audi A3 - Top speed randomly limited

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by Sinizter View Post
    Unless you mean that a coil pack = all coils.
    It does, hence coil pack - and petrol engines have only one. And why i think it may be a dsg issue...
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    Re: Problem with Audi A3 - Top speed randomly limited

    Surely there'll be a fault logged if something's sending into LOS?

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by Konan555 View Post
    Surely there'll be a fault logged if something's sending into LOS?
    Hopefully it will be something that is clear and quickly fixed. I'll find out when I take it in.
    All Hail the AACS : 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by J4MES View Post
    petrol engines have only one. And why i think it may be a dsg issue...
    No. Coil packs are 1 per cylinder. My car has 6 cylinders and 6 coil packs. if it were a 'coil' rather than 'coil pack' then yes, it'd be only one but when you're talking about a coil pack it's one per cylinder.

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    Re: Problem with Audi A3 - Top speed randomly limited

    Its going into limp mode... the ECU triggers this if it detects something that could damage the engine..
    If its a TDI itll probably be turbo-related (dodgy MAF readings, underboost/overboost) - if its a petrol itll be a sensor.. you would know about it if a coilpack had gone as it would run like a bag of spanners all the time.

    A dealer will read the fault codes stored... youl also probably find if you switch the igntion off and then back on again the engine will be back to normal.. the fact you say its intermittant and no lights on the dash tells me its very intermittant.. the ecu will log a fault but will only put the engine warning light on if it happens twice in a few restart-cycles.

    I had a similar fault with my fabia vRS (1.9Tdi) - it would only do it when cold, but basically it was going into limp mode and logging a code to say the actual boost pressure was lower than the requested boost... that was down to a sticking VNT actuator that a good spray of WD40 sorted

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    Re: Problem with Audi A3 - Top speed randomly limited

    There are no lights on the dashboard ... The dealer couldnt find anything diagnostic in the fault codes. They suspect its the turbo, but they are reluctant to replace it just to check whether it is the fault.
    All Hail the AACS : 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

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    Re: Problem with Audi A3 - Top speed randomly limited

    Sinizter, I can't see the turbo putting you down to 40mph, I'd go for fuel blockage first, new filter and clear the lines.







    Quote Originally Posted by burble View Post
    No. Coil packs are 1 per cylinder. My car has 6 cylinders and 6 coil packs. if it were a 'coil' rather than 'coil pack' then yes, it'd be only one but when you're talking about a coil pack it's one per cylinder.
    You got this the wrong way round, a coil pack by it's name is a pack of coils, a 6 cylinder car will have 1 coil pack with 3 or 6 coils, most common 3 feeding 2 cylinders each.
    If yours has 1 per cylinder then it's 1 coil per cylinder.

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by filbert View Post
    Sinizter, I can't see the turbo putting you down to 40mph, I'd go for fuel blockage first, new filter and clear the lines.
    Why would it be all fine when I shut off the ignition and re-start it ? Wouldnt the blockage remain ?
    All Hail the AACS : 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

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    Re: Problem with Audi A3 - Top speed randomly limited

    When you turn off, the dirt falls, then slowly builds up again.
    Just a guess, I can't fix it over the net,lol.

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by filbert View Post
    When you turn off, the dirt falls, then slowly builds up again.
    Just a guess, I can't fix it over the net,lol.
    remote desktop connection?

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by filbert View Post
    You got this the wrong way round, a coil pack by it's name is a pack of coils, a 6 cylinder car will have 1 coil pack with 3 or 6 coils, most common 3 feeding 2 cylinders each.
    If yours has 1 per cylinder then it's 1 coil per cylinder.
    No, I've got it the right way around. I know other manufacturers would have a number of coils in a pack, but VAG cars having 1 unit, called a coil pack, per cylinder. I guess it's just VAG being a bit unconventional with their naming.

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by burble View Post
    No, I've got it the right way around. I know other manufacturers would have a number of coils in a pack, but VAG cars having 1 unit, called a coil pack, per cylinder. I guess it's just VAG being a bit unconventional with their naming.
    Not quite - only on the 1.8t engines do VAG have one coil (not a coil pack - it's not their naming convention) per cylinder...
    http://www.helpforheroes.org.uk

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by burble View Post
    Coil packs are 1 per cylinder. My car has 6 cylinders and 6 coil packs. if it were a 'coil' rather than 'coil pack' then yes, it'd be only one but when you're talking about a coil pack it's one per cylinder.
    It's one per pair of cylinders on a lot of engines. Wasted spark systems fire twice per cycle which is one the old MOT people used to forget back in the day.

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    Re: Problem with Audi A3 - Top speed randomly limited

    Quote Originally Posted by filbert View Post
    If it's a TDi then it aint got any.
    thats what i was thinking? ive had numerous coil packs go on several 1.8T models ive had

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