Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Welcome to OOF

Pages: [1]   Go Down

Author Topic: Misfire, EML, and 2 fault codes  (Read 1456 times)

0 Members and 1 Guest are viewing this topic.

JamesV6CDX

  • Omega Queen
  • *****
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 16658
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Misfire, EML, and 2 fault codes
« on: 04 October 2008, 18:32:18 »
More trouble  >:(

Here's the deal.

Went out for a run today - car was fine on the way. On the way back, it seemed to lose a bit of power a couple of times but only just enough to be noticable. When waiting at lights, it gave me a very prominant misfire - but it cleared when I drove off.

Got home, checked plug leads  and wells - all dry and OK.

Read codes, I've got codes

73   Mass Air Flow Sensor Voltage Low
74   Mass Air Flow Sensor Voltage High

When the engine is idling, the EML flickers, but as soon as it revs, the EML goes off - and comes back on when back at idle.

Although it does rev, it misfires randomly and tries to cut out.

Going on past experience it seems very much like fuel starvation, but the tank is full  :-/
Logged

Dazzler

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Haverhill, Suffolk
  • Posts: 4198
  • Drive it like you stole it......
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #1 on: 04 October 2008, 20:31:40 »
Fuel filter been done?? :-/
Logged
Big jobbies now finished.....Now running on LPG

Marks DTM Calib

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 34111
  • Git!
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #2 on: 04 October 2008, 20:33:39 »
Have you had a cam cover failure?

Was there signs of tracking on the plug insulators when removed and checked?
Logged

JamesV6CDX

  • Omega Queen
  • *****
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 16658
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #3 on: 04 October 2008, 20:39:35 »
Quote
Have you had a cam cover failure?

Was there signs of tracking on the plug insulators when removed and checked?

Cam covers / plug wells have always been bone dry. Everything on the HT site looked fine although the boots on the leads are a bit worn ::)

Logged

feeutfo

  • Guest
Re: Misfire, EML, and 2 fault codes
« Reply #4 on: 04 October 2008, 20:41:15 »
well i know they rarely fail but we have to have a buggered maf sooner or later... And your the man to do it James.  :)
Logged

iainb

  • Senior Member
  • ****
  • Offline Offline
  • Gender: Male
  • West Midlands
  • Posts: 523
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #5 on: 04 October 2008, 20:48:18 »
How about the wire's to the MAF sensor connector are they tight and is there any sign of corrosion on the terminals. while your at it why not spray the sensor again  ;)
Logged

feeutfo

  • Guest
Re: Misfire, EML, and 2 fault codes
« Reply #6 on: 04 October 2008, 20:51:57 »
or are the maf codes left over from engine work of some sort. Is it poss. the ignition was turned on with it disconnected?... Just a thought.
Logged

markey mark

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • SLady bitshorpe north lincs
  • Posts: 4236
  • banned for repeatedly reneaging on deals.
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #7 on: 05 October 2008, 00:18:17 »
put a cable tie round the plug to maf james bad connection mate ! :y
Logged

JamesV6CDX

  • Omega Queen
  • *****
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 16658
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #8 on: 05 October 2008, 12:18:18 »
Quote
put a cable tie round the plug to maf james bad connection mate ! :y

I found the reason it wouldn't run.

The bloody ICV pipe had come off the air intake   ;D ;D
Logged

Kevin Wood

  • Global Moderator
  • *****
  • Offline Offline
  • Gender: Male
  • Alton, Hampshire
  • Posts: 36506
    • Jaguar XE 25t, Westfield
    • View Profile
Re: Misfire, EML, and 2 fault codes
« Reply #9 on: 05 October 2008, 16:14:35 »
Just goes to show. EML codes tell you about the symptoms as the ECU sees them not the cause!

Kevin
Logged
Tech2 services currently available. See TheBoy's price list: http://theboy.omegaowners.com/
Pages: [1]   Go Up
« previous next »
 

Page created in 0.013 seconds with 17 queries.