« previous next »
Pages: [1]   Go Down

Author Topic: Lambda Voltage?  (Read 3189 times)

Offline metz

  • Members
  • *****
  • Posts: 237
Lambda Voltage?
« on: December 09, 2013, 06:16:26 pm »
Whats the correct voltage for the lambda once the car is warm? my G40 has been running a little rich and idle has been poor on cold mornings for the first few mins. wanted to make sure lambda was ok
Logged

Offline hayesey

  • Administrators
  • *****
  • Posts: 5824
  • The CV joint killer
    • ClubG40
Re: Lambda Voltage?
« Reply #1 on: December 10, 2013, 10:41:00 am »
it should oscillate between 0v and 1v at idle up to temp.  When driving it'll vary between 0v and 1v depending on the O2 reading it's getting.
Logged

Offline OCDmatt

  • Traders
  • *****
  • Posts: 60
Re: Lambda Voltage?
« Reply #2 on: December 10, 2013, 11:00:00 am »
Yeah you'd need to scope it ideally to see what it's reading, it'll probably be too quick for a mutlimeter
Logged

Offline metz

  • Members
  • *****
  • Posts: 237
Re: Lambda Voltage?
« Reply #3 on: December 10, 2013, 06:36:43 pm »
cheers lads.

I need the 2 + 2 connection to stick it on vag com really
Logged

Offline hayesey

  • Administrators
  • *****
  • Posts: 5824
  • The CV joint killer
    • ClubG40
Re: Lambda Voltage?
« Reply #4 on: December 11, 2013, 09:32:34 am »
you can get them on ebay for not a lot.  ODB to 2+2 adaptors.
Logged

Offline OCDmatt

  • Traders
  • *****
  • Posts: 60
Re: Lambda Voltage?
« Reply #5 on: December 11, 2013, 09:41:01 am »
You used one Hayesey? I'm sure I've got a gen one at home but can't find it! Just heard some of the ebay ones being dodgy?
Logged

Offline hayesey

  • Administrators
  • *****
  • Posts: 5824
  • The CV joint killer
    • ClubG40
Re: Lambda Voltage?
« Reply #6 on: December 11, 2013, 02:20:03 pm »
an ODB to 2+2 adaptor?  Yeah I've used one.  Seems to work ok with my old ODB-rs232 cable.  Can't even remember where I got my ODB-rs232 cable from now but it seems to work better with older stuff than USB cables.  Just means I have to keep an ancient laptop which still has an old fashioned serial port on it for this purpose!

I find vwtool.exe works better with g40 digipants than vagcom.  There's a download link I put in the FAQ section somewhere.
Logged
Pages: [1]   Go Up
« previous next »