LT35 Low power and Lumpy Idle with Logs

**jammy86** · 08-05-2018,10:11 PM

Hi, A friends LT35 is performing a little poorly. Over all it drives OK but is generally low on power. Everything appears to be in working and usable condition with the van being reasonably well maintained over the years. A quick check of a few engine parameters on VAGCOM shows that the MAF and boost appear to be responding in general and no obvious non functioning sensors. There were a few DTCs which when cleared and after a short drive have not come back, but I've told him to swing by in a few days and see if they have cropped up. It hunts at idle and the log shows that what appears to be a cylinder fuel trim is hunting around with stutters at idle coinciding with the low and high points of the sweeping trim. I was surprised to see no obvious lambda and fuel pressure parameters in the available channels.

Is anyone able to have a look at the attached logs and comment?

TIA.
James.

Address 01: Engine Labels: None
Control Module Part Number: 2D0 906 019 A
Component and/or Version: 2,8l R4 EDC 0001SG 3713
Software Coding: 00002
Work Shop Code: WSC 02330
VCID: 204E6491A0730C4595-4AE4
3 Faults Found:

18009 - Relay for Supply Voltage Terminal 30 (J317)
P1601 - 35-00 - Implausible Signal
16705 - Engine Speed Sensor (G28)
P0321 - 35-00 - Implausible Signal
17471 - Fuel Pressure Regulation
P1063 - 35-10 - Control Range Not Reached - Intermittent