Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please play nicely.  No one wants to listen/read a keyboard warriors rants....

Pages: [1]   Go Down

Author Topic: Wonít take much throttle & misfires Ė ECU?  (Read 439 times)

0 Members and 1 Guest are viewing this topic.

MaxRevs

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Shropshire
  • Posts: 18
    • View Profile
Wonít take much throttle & misfires Ė ECU?
« on: 14 July 2021, 17:10:58 »

I have a problem on my 2002 2.6 CDX Estate Ė if I use more than half throttle it starts to lurch as it cuts out, comes back in, cuts out again, until I lift off the throttle and it runs OK again. If I donít lift off within a few seconds it suffers a sudden loss of power as it goes into limp mode. If that happens Iíll pull in and switch off for a minute or two and it restarts again.

Once youíve gradually got it up to speed itíll maintain motorway speeds and the mpg hasnít deteriorated. The fault is long-standing and not intermittent.

I had it into my local garage last year but they couldnít get to the bottom of it and said it was probably the ECU.

Additionally itís now started missing at tickover up to 2,500rpm and the engine management light is permanently on.

Iíve read on here a number of times over the years that itís hardly ever the ECU thatís the problem, but that garages often say itís the ECU because they canít figure out what else it could be. So, could it be the ECU? If not, then what else could it be?
Logged

Doctor Gollum

  • Over Active Thyroid
  • *********
  • Offline Offline
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 22662
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #1 on: 14 July 2021, 17:19:52 »

What codes are present?

Without that basic information everything else is guessing.

In order of likelihood:

Oil or water in the plug wells.
Failing coil packs.
Failing fuel pump.
Wiring loom issue.
Logged
Onanists always think outside the box.

amba

  • Omega Baron
  • ******
  • Offline Offline
  • Gender: Male
  • Medway towns
  • Posts: 4767
    • 2003.BLACK 3.2 ELITE
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #2 on: 14 July 2021, 17:20:03 »

Sounds more like a fault within the ignition.Check and changed plugs if unkown age or more than a few years old.

Possibly 1 of he ignition coils so check when you are replacing plugs for oil etc down the plug wells as leaking oil into them from camcovers could also be a issue.
Logged

Raeturbo

  • Omega Baron
  • ******
  • Offline Offline
  • Gender: Male
  • South Wales
  • Posts: 4342
    • Mv6 3.2 Mitsi Evo2. XJ8
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #3 on: 14 July 2021, 17:20:30 »

Airflow meter maybe👀
Logged
Laying a rubber road.

Doctor Gollum

  • Over Active Thyroid
  • *********
  • Offline Offline
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 22662
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #4 on: 14 July 2021, 17:21:42 »

Airflow meter maybe👀
Unplugging it would prove, but without codes, we're going to get wet.
Logged
Onanists always think outside the box.

Raeturbo

  • Omega Baron
  • ******
  • Offline Offline
  • Gender: Male
  • South Wales
  • Posts: 4342
    • Mv6 3.2 Mitsi Evo2. XJ8
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #5 on: 14 July 2021, 17:25:07 »

Indeed, codes will give us a start
Logged
Laying a rubber road.

MaxRevs

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • Shropshire
  • Posts: 18
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #6 on: 15 July 2021, 20:42:48 »

Thanks guys but unfortunately I donít have the codes, Iíll speak to the garage tomorrow and see if they kept a record of them. If not Iíll have to get somebody to scan the codes again Ė but, thinking about it, it would make sense to have an Omega expert do it and fix the problem for me.
I seem to remember we had such a fellow in the Northampton area, but I canít remember his name. Does anyone remember and is he still around?
Logged

VXL V6

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Solihull
  • Posts: 9468
    • 3.2 V6 Elite Saloons
    • View Profile
Re: Wonít take much throttle & misfires Ė ECU?
« Reply #7 on: 15 July 2021, 20:55:02 »

It's a 2.6, you can do the pedal trick to flash out the codes  :y
Logged
Pages: [1]   Go Up
 

Page created in 0.075 seconds with 23 queries.