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i have some issues with my car and have no idea what i should do next

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Author Topic: 1.8t running problem can any1 help?  (Read 1168 times)

Offline Kenzie07

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1.8t running problem can any1 help?
« on: 14 February 2013, 19:02 »
Hi this is my first time on hear, iv got a mk4 1.8t gti with the agu engine over the last few months iv had afew problems with it come up iv put my vag code reader on and its come back saying (16795 secondary air injection system incorrect flow detected) (17705 pressure drop between turbo and D.V) (17545 fuel trim: bank 1 (add): system too rich) Im at a loss iv replaced the plugs and coil packs, and put a new Forge Split R dump valve on and none of this has made a big diffrence im thinking of a new cam belt, air oil and fuel filter and fresh oil. The stater motor has started to stick and it has a strong smell of fuel when first starting up and has intermitent losses of power when driving and when you boot it or set off from the lights it feels like the turbo isnt boosting properly from time to time. Im at a total loss with it can anyone offer any suggestions of where to go next with it?? any help would be much appreciated.

Thanks guys and galls

Offline navmk4gti

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Re: 1.8t running problem can any1 help?
« Reply #1 on: 14 February 2013, 19:23 »
Welcome..Check for split boost pipes mate.. Thats the 17705 which is a ballache to locate..Also look on here for explanations on what codes mean before replacing expensive parts :wink:

http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes

Do you have rough idle? And crappy mpg?  Unplug the maf and take it for a spin see if it boosts like it should
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Offline Rhyso

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Re: 1.8t running problem can any1 help?
« Reply #2 on: 14 February 2013, 19:26 »
Ditch the Split R and fit the 008p. 1.8Ts hate atmospheric DV's

Offline Wazzzer

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Re: 1.8t running problem can any1 help?
« Reply #3 on: 14 February 2013, 20:53 »
17705 on an AGU?


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 golfyste

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Re: 1.8t running problem can any1 help?
« Reply #4 on: 15 February 2013, 08:50 »
Something strange going off as agu didn't have secondary air injection!
I'm thinkin that maybe it has the wrong Ecu??  :undecided:
But first Fitch the split r and check all pipes for splits As its indicating a boost leak. Also possibly a cracked turbo.
« Last Edit: 16 March 2013, 14:56 by Wazzzer »


R-tech custom remap - k04-001- 250bhp/311ftlb  :grin:

"Project track car" has begun :grin:

http://www.golfgtiforum.co.uk/index.php?topic=247202.0

Offline Kenzie07

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Re: 1.8t running problem can any1 help?
« Reply #5 on: 15 February 2013, 15:09 »
Hi guys thanks for all your help and advice, i think i might have found the problem a clogged air intake and a split oil breather pipe willup date itover the weekend and let you know if its sorted it of down the scrap yard now fingers crossed  :grin:

Offline jambouk

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Re: 1.8t running problem can any1 help?
« Reply #6 on: 16 March 2013, 10:16 »
Did you ever fix this?

James