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Go Back   TDIClub Forums > VW TDI Discussion Areas > Alternative Diesel Fuels (Biodiesel, WVO, SVO, BTL, GTL etc)

Alternative Diesel Fuels (Biodiesel, WVO, SVO, BTL, GTL etc) Discussions about alternative fuels for use in our TDI's. This includes biodiesel WVO (Waste Vegetable Oil), SVO (Straight Vegetable Oil), BTL (Biomass to Liquid), GTL (Gas to Liquids) etc. Please note the Fuel Disclaimer.

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Old August 9th, 2017, 10:04   #1
theodore
Newbie
 
Join Date: Aug 2017
Location: Spokane, Wa.
Default engine r/r... was WVO, now no start. 1Z/AHU

I carefully removed WVO controller, switches, etc. Most all of the wires i cut were "T" splices(hope you know what i mean), The fuel solenoid doesnt seems to open, but power is in the plug(test light). I can open it w/jumper and yes fuel to injectors.
VCDS codes below,
Address 01: Engine Labels: 028-906-021-AHU.lbl
Control Module Part Number: 028 906 021 GQ
Component and/or Version: 1,9l R4 EDC G40SG 1420
Software Coding: 00002
Work Shop Code: WSC 25051
VCID: 64CDB249F4409E9
8 Faults Found:
00527 - Intake Manifold Temperature Sensor (G72)
30-10 - Open or Short to Plus - Intermittent
00522 - Engine Coolant Temperature Sensor (G62)
30-00 - Open or Short to Plus
01269 - Commencement of Injection Valve (N108)
31-10 - Open or Short to Ground - Intermittent
00765 - Modulating Piston Movement Sensor (G149)
35-00 - -
01268 - Quantity Adjuster (N146)
35-00 - -
01268 - Quantity Adjuster (N146)
27-00 - Implausible Signal
00539 - Fuel Temperature Sensor (G81)
30-00 - Open or Short to Plus
00542 - Needle lift Sensor (G80)
30-00 - Open or Short to Plus
Readiness: N/A
Wires is my weakness, oh my time to start training, reading up and listening to the good advice found here!
Thank you,
Theo
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Old August 9th, 2017, 16:09   #2
GoFaster
Moderator at Large
 
Join Date: Jun 1999
Location: Brampton, Ontario, Canada
Default

There are SO many codes relating to sensors and switches that this has got to be a major connector in the harness that isn't plugged in (or equivalent), or a major power supply or ground connection that isn't.
__________________
Brian P.
formerly ... 2006 Jetta TDI 5-sp, Spice Red, Unitronics stage 1, 0.681 5th gear.
and before that ... 1996 Passat TDI, Silk Blue
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Old August 9th, 2017, 16:37   #3
theodore
Newbie
 
Join Date: Aug 2017
Location: Spokane, Wa.
Default oh my it runs!

"spark or fuel" right? So when ahead checked and re-check wires(under battery) and connections, plug and replug and so on then put the vacuum pump back on the plugged injector and pulled about a pint of fuel through, then
push IP all the way back towards engine, she started/ woohoo!
I thought i had cleared the codes but seems now they were from old WVO engine and IP.
Thx,
Theo
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