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Author Topic: random judder  (Read 1711 times)

Offline beppe2672

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random judder
« on: 13 November 2013, 03:38 »
Hey guys, My 1.8t agu has developed a bit of a judder on acceleration and over run, usually happens around the 3500rpm mark, the car isnt throwing any fault codes up, I've also checked for boost leaks. I also never seem to be able to catch it while logging with vcds. No misfire counters either. Seems to happen more often when the engine is cold. When its warmed up it only happens occasionally when accelerating hard. Any ideas guys?     
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline dom

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Re: random judder
« Reply #1 on: 13 November 2013, 08:23 »
Does it feel like it's down on power?
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Offline beppe2672

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Re: random judder
« Reply #2 on: 13 November 2013, 16:42 »
Nah its running fine, just wish it would throw up a fault to point me in the right direction, theres so many things it could be.
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline navmk4gti

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Re: random judder
« Reply #3 on: 13 November 2013, 17:05 »
Does it judder slightly at idle when you just sitting there parked up?
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Offline beppe2672

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Re: random judder
« Reply #4 on: 13 November 2013, 17:41 »
It only does it under load, idle isn't exactly perfect, but i wouldn't sat it idles lumpy.
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline beppe2672

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Re: random judder
« Reply #5 on: 13 November 2013, 17:42 »
Was thinking it could be the n75 valve possibly. But I dont know how to check it without fault finding by substitution.
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline Wazzzer

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Re: random judder
« Reply #6 on: 13 November 2013, 17:47 »
you got anyone to try an ignition amp off them? Might be breaking down under load. Also I don't think the misfire counter works on the AGU...
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1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline beppe2672

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Re: random judder
« Reply #7 on: 14 November 2013, 13:00 »
I'll test the ignition amp tonight then.
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline Wazzzer

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Re: random judder
« Reply #8 on: 14 November 2013, 19:13 »
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1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline beppe2672

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Re: random judder
« Reply #9 on: 15 November 2013, 12:43 »
cheers mate, bit easier than working from circuit diagrams!
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!
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