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General => The garage => Topic started by: paddy2011 on 27 February 2012, 00:44

Title: mk golf gti turbo problem
Post by: paddy2011 on 27 February 2012, 00:44

hi guys im wondering if you could help me, i bought a 1998 mk4 golf 1.8 20v valve turbo about 8 weeks and everything was going fine until the other night when i drive suddenly the boost would just drop to zero, this happened in 3rd,4th and 5th gear, also another thing what boost should it be running at because im getting between 8-10 psi, the only mods the car has is a dump valve, cone filter and a scorpion full system and its running k03 turbo with the agu engine, hope you guys can help

Title: Re: mk golf gti turbo problem
Post by: barrym381 on 27 February 2012, 01:08

have you check all your hoses incase u have a boost leak an what dump valve is on the car
8-10psi is usual for a standard agu im sure

Title: Re: mk golf gti turbo problem
Post by: paddy2011 on 27 February 2012, 01:33

thanks for the reply barry, ill check all hoses in the morning, im not sure what dump valve it is as it was already on the car, just looks like a cheap polished silver one, what hoses should i be looking for, for leaks?????

Title: Re: mk golf gti turbo problem
Post by: barrym381 on 27 February 2012, 01:39

buy a cheap fault code reader an see if any codes come up
an if its not a forge d/v i would invest in 1

Title: Re: mk golf gti turbo problem
Post by: Wayne on 27 February 2012, 10:50

The dump valve will not be helping, they do not work on a 1.8t

Title: Re: mk golf gti turbo problem
Post by: Rmachines on 29 February 2012, 22:36

Not going into to limp mode is it?  (dont know much about limp mode behaviour ones these as mine is the old skool AEB engine)   But limp mode will most certainly cut boost.