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Mk5 General Area / Re: Stuttering under heavy acceleration at about 4k rpm

« Last post by GVK on Today at 10:54:10 pm »

Andrew Chapple of volkswizard YT channel had an ED30 with a similar fault and he had a crank sensor signal failure.

i=7Jxe7t4wzLvpCRSf

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Mk5 General Area / Re: Stuttering under heavy acceleration at about 4k rpm

« Last post by Ytee on Today at 10:41:39 pm »

Thanks for the replies Happy it sounds like a maintenance thing rather than imminent major failure.

Spark plugs are good I did those not long ago (and it didn't change the problem), but the rest yeh, never to my knowledge.

It doesn't feel like a boost leak, it's feels so "electronic", but of course I could easily be wrong, I'm not an expert. But the injectors is interesting because there is also a sporadic misfire at idle actually, and I've always wondered if that's a lazy injector. I'll have to look into the crank sensor as well.

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Mk5 General Area / Re: crank shaft pulley bolts

« Last post by GVK on Today at 12:56:17 pm »

https://www.akstuning.co.uk/shop/home/1463-genuine-vag-crank-pulley-bolt-n91143901.html

M8x16

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Mk5 General Area / crank shaft pulley bolts

« Last post by Johnsmart on Yesterday at 10:47:30 am »

what is the size and part number for the 6 crank shaft pulley bolts

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Mk5 General Area / Re: Stuttering under heavy acceleration at about 4k rpm

« Last post by mjmallia on November 10, 2025, 09:17:21 am »

Check a few of the obvious ones like fuel filter, spark plug condition, when was the last time you did a carbon and injector clean on the intake, boost leaks  and so on.

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Mk5 General Area / Re: Stuttering under heavy acceleration at about 4k rpm

« Last post by GVK on November 09, 2025, 10:35:02 pm »

Crank sensor losing signal.

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Mk5 General Area / Stuttering under heavy acceleration at about 4k rpm

« Last post by Ytee on November 09, 2025, 03:07:33 pm »

Hi all.

I'm betting someone's had this before and knows exactly what this is. I'm getting stuttering issues in my Mk5 under heavy acceleration when I hit around 4k rpm. It almost feels like a rev limiter kicking in, although of course it isn't that. Eventually it pulls through and continues on normally up to the red line. It's a bit sporadic, doesn't always happen, but it is fairly easy to recreate by accelerating with the pedal flat from about 2k rpm in 3rd, for example.

There's no EML, and VCDS brings up no fault codes either. I've recently changed the air filter just in case it was that, but no.

The car is standard except for a simple Bluefin remap, but that hasn't caused me any issues in the 5 years I've had it.

I fear it's the turbo, but, before I start sending it in for expensive diagnostics, I thought I'd ask here :)

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How to Guides / Troubleshooting / Re: got a leak Just found a cracked pipe anyone know the part number?

« Last post by edition30ldn on November 08, 2025, 06:41:02 pm »

also if theirs any real people on here or bots maybe you could tell me how to remove and replace this part lol is it an easy job to change?? thank you

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How to Guides / Troubleshooting / Re: got a leak Just found a cracked pipe anyone know the part number?

« Last post by edition30ldn on November 08, 2025, 04:46:59 pm »

https://www.coverdalecarparts.co.uk/product-page/brake-booster-vacuum-hose-2-0tfsican anyone confirm if this is the part i need?

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How to Guides / Troubleshooting / got a leak Just found a cracked pipe anyone know the part number?

« Last post by edition30ldn on November 08, 2025, 03:29:48 pm »

car was running rough and brakes feeling bit weird ..just found this ...Anyone know the part number for this ??? i think its part of the brake booster ....