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Author Topic: MK5 Gti lost all power/boost  (Read 12063 times)

Offline LowProfile

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Re: MK5 Gti lost all power/boost
« Reply #15 on: December 08, 2014, 09:26:35 pm »
It is possible you need to replace the B1-S2 Oxy sensor. But the code could be resulting from something else undetected...but not likely. It sounds like it has gone into safe-mode due to boost plumbing leakage or cam follower failure or something. But you should have a more definite error code other than just P0036. Save this link to check any future codes...just enter the code in the search box: http://wiki.ross-tech.com/wiki/index.php/16420/P0036/000054

honestly its just like driving a 1.6 or something now.. terrible! That is the only code flagging up at the min, the cam follower failure sounds bad.. i ordered a cam follower should be here this week ( part number - 06D109309C ).

is it safe to drive? or will it do more damage?
If it is the cam follower...replace as quickly as possible.

If you do replace quickly...you have a chance to save the intake cam, but not likely going to save the hpfp. But this would only be a concern if your code reader isn't reading all of the codes because a cam follower failure would definitely pop a code. I would think to focus on the O2 sensor after you check the follower. Is your hpfp banjo or bamboo?
I have some DIY vids that may help:

Cheers mate .. Well i changed the diverter valve tonight, wasnt perforated but replaced anyway, still drives the same allthough the connector was soaked in oil from the leak.

Can an o2 sensor stop boost? Seems to be running wrong.

Offline ROH ECHT

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Re: MK5 Gti lost all power/boost
« Reply #16 on: December 09, 2014, 05:20:09 am »
Many sensors can cut the power in order to keep it safe and to make you aware there is a problem.
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline LowProfile

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Re: MK5 Gti lost all power/boost
« Reply #17 on: December 09, 2014, 07:25:41 am »
Many sensors can cut the power in order to keep it safe and to make you aware there is a problem.

Will focus on that then.. As for the HPFP the cam follower should be here today or tommorow so will look then, i had a quick look last night and it looks like 3 torx bolts and 2 metal hoses attached to it.

Offline ROH ECHT

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Re: MK5 Gti lost all power/boost
« Reply #18 on: December 09, 2014, 08:52:28 pm »
My DIY for the HPFP if it helps, but you all have the Banjo bolt on the high pressure side and I haven't ever dealt with it:
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

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Re: MK5 Gti lost all power/boost FIX
« Reply #19 on: December 10, 2014, 08:06:27 pm »
UPDATE:

Car is now fixed and back to normal.. the problem was the connection between the actuator somewhere, not allowing boost.

Leak was from a Banjo bolt on the turbo since it was replaced, guessing it wasnt tightened up fully.

boost is now back.