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Random momentary stalling | VW Vortex

Howdy Good Individuals, and thanks all for on a regular basis you place in serving to strangers on the web.
I’ve seen a number of posts that appear related, however nothing fairly the identical.

I’ve a 2005 (early half of the yr, MKIV, 1J6), Jetta TDI Wagon GLS.
I’ve run it 95% on biodiesel since I bought it in 2017, and it has a “1.5” european mod from Malone tuning (additionally from 2017).

6 years no issues, then a few yr in the past it began randomly stalling for normally lower than one second.
I ran VCDS, it got here up with:

16725 – Camshaft Place Sensor (G40) P0341 – 000 – Implausible Sign – Intermittent

19558 – Motor for Consumption Manifold Flap (V157) P3102 – 000 – No Sign

18009 – Relay for Provide Voltage Terminal 30 (J317) P1601 – 000 – Implausible Sign – Intermittent

01314 – Engine Management Module -004 – No Sign/Communication – Intermittent

Took it to an area (non-dealer) VW specialist, in addition they noticed 19463 – CMP no sign, and a few broken wiring and intermittent voltage drop at consumption flap connector.
They ended up changing the turbo wastegate connector pigtail and the camshaft and crankshaft sensors, (in addition to the drivebelt and tensioner and excessive strain gasoline pump gasket).

Intermittent stalling concern went away. For 9 months. Then it got here again.

It normally lasts for a fraction of a second. I really feel it lose energy, my ‘UltraGuage’ shuts off, and the glowplug image (the two loopdy loops) comes on. The momentum of the engine retains it turning, and an immediate later the facility comes again, and all the things continues as if nothing occurred.
Typically I get the traction warning gentle (exclamation mark in a triangle in a circle arrow image), which stays on till the following time it shuts off or I shut it off. Different occasions not. Typically the cruise management stops working after it occurs. Different occasions I simply should set it. Whether or not the traction image lights up and whether or not the cruise stops working don’t appear to be associated to one another.

The momentary shut off is annoying and worrying, but it surely occurs so quick that it barely impacts my pace. (Normally – when it occurs at idle, it generally dies. When it does, it normally begins proper up once more, though generally I’ve to attend a number of seconds. When it does not catch instantly, I wait till the verify engine gentle comes on, at which level it reliably restarts)

So far as I can discern, there is no such thing as a sample what-so-ever. It occurs on chilly days and sizzling, moist and dry, generally quickly after beginning within the morning earlier than its preliminary warm-up, different occasions after driving all day. Typically I’m going for days and a whole lot of miles and it occurs zero occasions. Different occasions it occurs each jiffy for an hour, and even a number of occasions inside a couple of minutes. Often it is occurred inside seconds of the time earlier than. It occurs on acceleration, deceleration, regular driving (with or with out cruise management), and at idle, together with at idle whereas parked (which guidelines out street vibrations as an element). Not too long ago it generally occurs for over a second, at which level the oil and/or verify engine gentle comes on and it begins beeping, earlier than going again to regular.

Ran VCDS once more, this time I obtained:

VCDS — Home windows Primarily based VAG/VAS Emulator Operating on Home windows 10 x64
VCDS Model: (x64) HEX-V2 CB: 0.4631.4
Knowledge model: 20230421 DS346.2
Chassis Sort: 1J (1J – VW Golf/Bora IV (1998 > 2006))
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
VIN: WVWSR61J85W027881
Handle 01: Engine Labels: 038-906-016-BEW.lbl
Half No SW: 038 997 016 L HW: 028 101 181 2
Part: R4 1,9L EDC G000SG 3791
Revision: 12345678 Serial quantity: VWZ7Z0D0022975
Coding: 0150031
Store #: WSC 66565 257 00032
VCID: 270BF813B3F750926E1-5184
VINID: 9E69E388605A2059C0087208044DA30499

1 Fault Discovered:
18009 – Relay for Provide Voltage Terminal 30 (J317)
P1601 – 000 – Implausible Sign

Handle 19: CAN Gateway Labels: 6N0-909-901-19.clb
Half No: 6N0 909 901
Part: Gateway Ok<->CAN 0001
Coding: 00006
Store #: WSC 01266
VCID: 70B9D34F43B9572AFFB-5160

2 Faults Discovered:
01314 – Engine Management Module
49-10 – No Communications – Intermittent
01304 – Radio
49-00 – No Communications

(I reduce the “no fault discovered)

I checked relay 109 – getting near 12v regular, and the relay itself appears wonderful.
Took it again to the store, which had it two days earlier than they might reproduce the issue in any respect, after which had it a number of extra with out discovering the supply of the problem. They examined the relay and circuit and located no issues. I ultimately took it again (no cost) as I wanted to drive locations. Since then it is began occurring extra continuously.

I hoped the crowd-source mind would possibly provide you with one thing the store hasn’t considered, so I can both discover the precise wire to interchange or solder, or no less than level the store in the precise course if it is one thing I can not do myself. Any concepts?



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