dataiv
Veteran Member
Hi all,
I have been doing a lot of searching and research on the site, but I still need some assistance. My 99.5 Jetta has 245,000 km on it, mostly highway. At 235,000 or so, the car was going into limp mode when at full throttle in 5th gear (and sometimes in 4th). In December I took the head off, cleaned the intake, took apart the turbo, and found the vanes weren't really stuck, but a bit sticky sometimes. When I put everything back together the vanes were moving freely. It is fine most of the time, but sometimes it goes into limp mode still with the same code:
I still get a big boost spike, and I don't know if I should try adjusting the linkage on the VNT mechanism. I have checked the N75 and it appears to be fine. Having VAG-COM cycle the vanes in group 11 basic settings mode seems to be fine, and the rod travels as it should.
So, what I would optimally like to solve, is both problems, the boost spike, and the sometimes going into limp mode. I haven't ever been logging the data when it went into limp mode yet, as I haven't been that lucky...
Anyway, any hints for what I should try next and check next would be much appreciated.
Below is a graph of a run I did today at full throttle in 5th gear from 91-126km/h. I would like to go further, but I ran out of room today.
I have been doing a lot of searching and research on the site, but I still need some assistance. My 99.5 Jetta has 245,000 km on it, mostly highway. At 235,000 or so, the car was going into limp mode when at full throttle in 5th gear (and sometimes in 4th). In December I took the head off, cleaned the intake, took apart the turbo, and found the vanes weren't really stuck, but a bit sticky sometimes. When I put everything back together the vanes were moving freely. It is fine most of the time, but sometimes it goes into limp mode still with the same code:
Code:
VAG-COM Version: Release 311.2-N
Control Module Part Number: 038 906 018 EB
Component and/or Version: 1,9l R4 EDC G400SG 2143
Software Coding: 00002
Work Shop Code: WSC 00066
1 Fault Found:
17958 - Charge Pressure: Control Deviation
P1550 - 35-10 - - - Intermittent
So, what I would optimally like to solve, is both problems, the boost spike, and the sometimes going into limp mode. I haven't ever been logging the data when it went into limp mode yet, as I haven't been that lucky...
Anyway, any hints for what I should try next and check next would be much appreciated.
Below is a graph of a run I did today at full throttle in 5th gear from 91-126km/h. I would like to go further, but I ran out of room today.
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