My VW golf tdi 52 cuts out at junctions, has this happened to anyone else?
Your power supply relay 109 is faulty and is a common problem on all tdi engines, This has even happened to my own 1.9 tdi 130. The early tdi engines had a Black relay 109 fitted , From 2001 A grey relay 109 was fitted to try to cure stalling issues. The Relay 109 Powers these circuits: – Glow plug relay – Fuse 32 ECM Fuel quantity adjuster – Fuse 34 Cold start injector Waste gate bypass regulator valve (N75) Change over valve (N239) EGR vacuum regulator valve (N18) Mass air flow sensor (G70) – Fuse 43 Clutch vacuum vent valve (if equipped) Brake vacuum vent valve Relays for preheating coolant (if equipped) Crankcase ventilation heating element The ECM supplies power (and sometime ground as well) for: Fuel cutoff valve Cruise control switch Manifold (intake) air pressure/Intake air temperature sensor Needle lift sensor Engine speed sensor Engine coolant sensor Closed throttle position switch (part of “go” pedal) Kickdown switch (part of “go” pedal) Throttle position switch (part of “go
