Make a donation

Author Topic: p0299  (Read 4533 times)

Offline cutchie

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 19
p0299
« on: November 18, 2015, 06:21:51 pm »
So I've had the underboost fault for a wile now replaced the dv pcv and the waste gate actuator, this week I fitted a boost gauge and got the car smoke tested. I'm getting 4 psi and dropping to 3/3.5 and no boost leaks were found anyone any ideas where to go from here?

Offline cutchie

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 19
Re: p0299
« Reply #1 on: November 18, 2015, 06:30:48 pm »
Sorry waste gate solenoid**

Offline Ricky123

  • Always Involved
  • ****
  • Thank You
  • -Given: 3
  • -Receive: 27
  • Posts: 377
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,98436.0.html
Re: p0299
« Reply #2 on: November 20, 2015, 01:40:16 am »
Any mods?
Have you had a scan done with vagcom?

I'd double check all pipes, check intercooler for cracks too.
56 mk5 ed30 3dr
57 mk5 1.9 TDi match
22 a3 s-line competition 45 tfsiE
09 Suzuki GSXR 1000 (road going track sl*g)

Offline Dan648v

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 28
  • -Receive: 26
  • Posts: 795
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,39823.0.html
Re: p0299
« Reply #3 on: November 20, 2015, 09:33:43 am »
Had this code on my gfs a3 tdi and it was the actual actuator at fault. Replaced the unit and boom. Boosting again! Think the diaphragm had split inside?
Revo Stage 2+ Edition 30 No.1089 with added carbon

Offline Dan_FR

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 132
  • -Receive: 189
  • Posts: 1845
  • wait...what?
    • Email
Re: p0299
« Reply #4 on: November 20, 2015, 10:55:51 am »
So you've replaced the N75 rather than the actuator? Does sound like the actuator is at fault, not unheard of as mentioned above
TFSI... Revo Stage 2+... . WMI.... VCDS HEX + CAN, MPPS, VAG Commander & VAG tacho - South Wales

Offline Dan648v

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 28
  • -Receive: 26
  • Posts: 795
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,39823.0.html
Re: p0299
« Reply #5 on: November 20, 2015, 02:05:42 pm »
Take it to a garage and get them to vacuum test the actuator. That'll tell if it's working, that's what my Audi tech did  :happy2:
Revo Stage 2+ Edition 30 No.1089 with added carbon

Offline cutchie

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 19
Re: p0299
« Reply #6 on: December 18, 2015, 12:27:29 am »
So thought I would update this I've now replaced the turbo and the fault is Still the same still peaking at 4psi every time anyone any other ideas?

Offline Dan_FR

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 132
  • -Receive: 189
  • Posts: 1845
  • wait...what?
    • Email
Re: p0299
« Reply #7 on: December 18, 2015, 07:49:33 am »
4 psi is about actuator pressure when measured at the inlet

Data logging with VCDS is needed need to check all readings and whether the ECU is requesting boost (N75DC% - block 116 from memory - or thereabouts)
TFSI... Revo Stage 2+... . WMI.... VCDS HEX + CAN, MPPS, VAG Commander & VAG tacho - South Wales

Offline cutchie

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 19
Re: p0299
« Reply #8 on: December 18, 2015, 05:12:22 pm »
003



114



115

Offline cutchie

  • Just Arrived
  • **
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 19
Re: p0299
« Reply #9 on: December 18, 2015, 05:13:29 pm »
these are the graphs I logged but tbh I don't really know what im looking at or for! lol does anyone else see out anything out of place?

Offline Dan_FR

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 132
  • -Receive: 189
  • Posts: 1845
  • wait...what?
    • Email
Re: p0299
« Reply #10 on: December 18, 2015, 05:54:29 pm »
Can you share a link to the CSV files? Are they full throttle runs?
TFSI... Revo Stage 2+... . WMI.... VCDS HEX + CAN, MPPS, VAG Commander & VAG tacho - South Wales


Offline Dan_FR

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 132
  • -Receive: 189
  • Posts: 1845
  • wait...what?
    • Email
Re: p0299
« Reply #12 on: December 19, 2015, 12:36:08 am »
Not really helpful as those logs were done separately.

Log these blocks:
114 115 118
001 002 003
031 023 231
091 118 003

So log 3 at a time on each run (press the turbo button), and do a single full throttle run in 4th gear from 2k rpm to as high as possible. Only log this - no other data

Someone else having the same issue on the FB Page TFSI Tuning:
https://www.facebook.com/groups/529405700525327/permalink/723181707814391/
TFSI... Revo Stage 2+... . WMI.... VCDS HEX + CAN, MPPS, VAG Commander & VAG tacho - South Wales