G-8VXWWTRHPN Low fuel pressure and misfire? - VWWatercooled Australia

Announcement

Collapse
1 of 2 < >

Email Notifications Failing (mostly Telstra)

Hello everyone. Seems there is an issue with Telstra (possible others) blocking email from our server. If you are trying to sign up I would suggest a different email if possible. If you're trying to reset your password and it fails please use the Contact Us page:
Contact Us - VWWatercooled Australia
https://www.vwwatercooled.com/contact-us
Contact Us
2 of 2 < >

Welcome to the new look VWWatercooled

After much work and little sleep there is a new version of the forums running on more powerful and recent hardware as well as an upgraded software platform.

Things are mostly the same, but some things are a little different. We will be learning together, so please post questions (and answers if you've worked things out) in the help thread.

New Forum Server and Software - VWWatercooled Australia
https://www.vwwatercooled.com/forum/first-stop/forum-rules-how-to-post/2037513-new-forum-server-and-software
The new forum software is an upgraded version of what came before, it's mostly the same but also a little different. Hopefully easier to use and more stable than before. We are learning together here, so please be patient. If you have questions, please post them here. If you have worked something out and can provide an answer,
See more
See less

Low fuel pressure and misfire?

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
  • #1

    Low fuel pressure and misfire?

    I have a 3.2 litre V6 with 96,000km. A few times recently the engine has hiccupped and lost power briefly. On each occasion I was turning left onto a main road and accelerating away. At the time I thought it might be a fuel surge problem when the fuel tank was low or near empty. VCDS has reported a fault frequency of 5 and has logged:

    012555 - Low Pressure Fuel regulation
    P310B - 008 - Fuel Pressure Outside Specification – Intermittent

    000401 - Fuel Pressure Sensor (G247)
    P0191 - 002 - Implausible Signal – Intermittent

    Then today when accelerating up a hill, again with a low fuel tank and the car showing 30km to empty, the engine misfired and the check engine light flashed on and off for maybe 5 or 10 seconds. VCDS has determined today’s event as:

    000768 - Random/Multiple Cylinder Misfire Detected
    P0300 - 001 - - Intermittent

    000773 - Cylinder 5
    P0305 - 001 - Misfire Detected – Intermittent

    000774 - Cylinder 6
    P0306 - 001 - Misfire Detected - Intermittent

    Does anyone have any thoughts regarding the root cause?
    2007 Passat B6 3.2 litre V6 4Motion | Granite Grey | standard 17" Solitude wheels | tow bar
    Mods: R36 steering wheel | HP DQ250 DSG tune | HPA Haldex performance controller | Koni sports yellow shocks | Eibach springs | H&R sway bars | Whiteline ALK | Kufatec E-MFA add on | Garage door button | Warning triangle retrofit | Bridgestone Potenza Adrenalin RE003s
    Tags: fuel, intermittent, low, misfire, pressure
  • #2
    Might be as simple as not letting the fuel get so low in the tank. Does it happen when you have more fuel in the tank?
    2017 Ford Fiesta ST the go kart

    2015 Audi SQ5 bi-turbo V6 TDI family hauler

    Comment

    • #3
      Hasn't happened on a healthy tank of fuel that I can recall recently. I've got a full tank now so I try to provoke it.
      2007 Passat B6 3.2 litre V6 4Motion | Granite Grey | standard 17" Solitude wheels | tow bar
      Mods: R36 steering wheel | HP DQ250 DSG tune | HPA Haldex performance controller | Koni sports yellow shocks | Eibach springs | H&R sway bars | Whiteline ALK | Kufatec E-MFA add on | Garage door button | Warning triangle retrofit | Bridgestone Potenza Adrenalin RE003s

      Comment

      Previous template Next

      2025 - Below Forum

      Collapse

      Test Slow

      Collapse
      Working...
      X