Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Welcome to OOF

Pages: [1] 2  All   Go Down

Author Topic: MAF Kh/g Readings  (Read 1505 times)

0 Members and 1 Guest are viewing this topic.

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
MAF Kh/g Readings
« on: 10 January 2013, 21:58:04 »
Ok as per request the MAF readings:

Tick Over Warm: 9-10

Blip throttle light: 47

Heavy Blip: 79

at 2000: 26

at 3000: 69

15c Air Intake

o2's permanently lean

So what does this suggest?
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 106971
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: MAF Kh/g Readings
« Reply #1 on: 11 January 2013, 20:22:55 »
Quote from: Craig32 on 10 January 2013, 21:58:04
Ok as per request the MAF readings:

Tick Over Warm: 9-10

Blip throttle light: 47

Heavy Blip: 79

at 2000: 26

at 3000: 69

15c Air Intake

o2's permanently lean

So what does this suggest?
Both?

Also, what are trims doing?
Logged
Grumpy old man

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #2 on: 11 January 2013, 21:54:11 »
Yep both sensors stay on lean even when blipping the throttle. (replaced the pre cat sensor in November last year.)  The fuel trim comes up as 0. I am worried its the cat.
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36414
    • Jaguar XE 25t, Westfield
    • View Profile
Re: MAF Kh/g Readings
« Reply #3 on: 12 January 2013, 09:22:48 »
It won't be the cat as the sensors are before the cat. Not saying cat isn't faulty, but not under suspicion currently.

For some reason it's not going closed loop.

Can you see the coolant temperature? Does that rise quickly to a sensible value (80-100 degrees C)?

Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #4 on: 12 January 2013, 22:10:06 »
Hi Kevin, the engine takes a mile or to get warm its normally around 75-80. The heater warms up very quick (which is a blessing at the moment). It runs better with the MAF disconnected but far from perfect. What are your thoughts?
Logged

tidla

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • solihull
  • Posts: 4097
    • View Profile
Re: MAF Kh/g Readings
« Reply #5 on: 12 January 2013, 22:13:04 »
The "on the dash" sensor is different to the ecu temp sender. Although the temp may go up, is the ecu seeing this rise?
The scanner reads what the ecu sees.
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 106971
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: MAF Kh/g Readings
« Reply #6 on: 13 January 2013, 09:51:32 »
Scanner should be able to confirm if its going closed loop or not
Logged
Grumpy old man

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #7 on: 13 January 2013, 22:02:36 »
right I will see what the ECU temp say's tomorrow (weather pending). Where abouts is the ect sensor on the 2.2?
Logged

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #8 on: 15 January 2013, 22:18:05 »
Right, I checked the ECU water temp today and it read the same as the temp gauge so I would assume its not the ECT sensor giving wrong readings. Runs about 75-80 unless in traffic. Any thoughts?
Logged

tidla

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • solihull
  • Posts: 4097
    • View Profile
Re: MAF Kh/g Readings
« Reply #9 on: 15 January 2013, 22:47:09 »
going into closed loop?

has anyone mention checking for airs leaks?
« Last Edit: 15 January 2013, 22:52:40 by tidla »
Logged

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #10 on: 17 January 2013, 22:05:08 »
Work done to date:

Plugs

coil pack

oil/filter/air filter

Throttle body clean and breathers cleaned (no leaks)

new lambda on the pre-cat

Runs better with MAF disconnected.

Any ideas?



Logged

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: MAF Kh/g Readings
« Reply #11 on: 17 January 2013, 22:07:31 »
Still not answered the question ...

Is it going to "closed loop" ???

:)
Logged

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #12 on: 18 January 2013, 20:17:17 »
Sorry :o! it goes into open loop :)
Logged

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: MAF Kh/g Readings
« Reply #13 on: 18 January 2013, 20:20:34 »
Quote from: Craig32 on 18 January 2013, 20:17:17
Sorry :o! it goes into open loop :)

You mean it STAYS in "Open Loop" ??? it should start in "Open Loop" when cold then go to "Closed Loop" as it warms up.

If it stays in "Open Loop" it is probably NOT running efficiently at all as the fuel is not being continually adjusted by the ECU.
Logged

Craig32

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Chesterfield, Derbyshire
  • Posts: 40
    • 2.2 CDX Auto Petrol
    • View Profile
Re: MAF Kh/g Readings
« Reply #14 on: 18 January 2013, 20:51:20 »
Yep it stays in open loop all the while and the fuel trim is 0.  :(
Logged
Pages: [1] 2  All   Go Up
« previous next »
 

Page created in 0.009 seconds with 16 queries.