matty-matt
Active member
Our 2014 6M TDi Passat with Malone 1.5 tune just turned 50k miles & developed a quiet but noticeable turbo whistle with no other symptoms except maybe loss of a few mpg. Very soon after during normal driving it emitted a 'whoosh' noise & lost boost. I assumed boost hose/tube had a tear or popped off. Car still ran ok on short drive home but with no turbo assistance. Next day it ran with progressively less power before ceasing to run at all. It will now start but quickly dies & won't stay running.
We had it towed to local VW specialist who is known as the go to guy here who fount a 'no boost regulation" code but couldn't find anything wrong. All vacuum present, turbo in good shape, no leaks. We towed it home & went through step by step checklist for no boost found on kermatdi looking for vacuum leaks, vnt actuator rod, etc. with no issues found. Next step is replacing 'N75' valve.
I'd rather not start throwing parts at it & hope somebody here has had & solved this issue & can help. We planned to keep it until end of year then return for buyback but if it would run I'd turn it in tomorrow.
Considering sending ecm to Malone to return to stock programming & then take to dealer to solve but they aren't well regarded for service.
Thank you.
We had it towed to local VW specialist who is known as the go to guy here who fount a 'no boost regulation" code but couldn't find anything wrong. All vacuum present, turbo in good shape, no leaks. We towed it home & went through step by step checklist for no boost found on kermatdi looking for vacuum leaks, vnt actuator rod, etc. with no issues found. Next step is replacing 'N75' valve.
I'd rather not start throwing parts at it & hope somebody here has had & solved this issue & can help. We planned to keep it until end of year then return for buyback but if it would run I'd turn it in tomorrow.
Considering sending ecm to Malone to return to stock programming & then take to dealer to solve but they aren't well regarded for service.
Thank you.