Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: caolan_p on 19 December 2007, 23:22:32

Title: miss fire,or dirty petrol
Post by: caolan_p on 19 December 2007, 23:22:32
hello all, I was driving this moring and the car died and would not go over 4000 RPM then knocked of ,the same thing for 15min trying to drive so i put £20 in and took it up the m1 at 70mph though it was fixed its self but later the same thing but not as bad its very slow taking off . :-? :-? :-? :-?                                                                                                                                                                                                                                                                                                                                                                                            seasons greetings to all
Title: Re: miss fire,or dirty petrol
Post by: JamesV6CDX on 19 December 2007, 23:28:59
Cam or crank sensor... any engine light on when missing etc?

You need to get the fault codes read :y
Title: Re: miss fire,or dirty petrol
Post by: Entwood on 19 December 2007, 23:32:50
The "not over 4000 rpm" is known as "limp mode" and is usually associated with an EML light on the dash, this leaves a code in the ECU which needs reading
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 19 December 2007, 23:40:27
the last time i changed the plugs there was oil in one of them      ,also my eml ligh comes on and of ,is it a VX job ????? :-? :y :y    
Title: Re: miss fire,or dirty petrol
Post by: Entwood on 19 December 2007, 23:44:41
the eml registers a code that can be read using Tech 2 kit, and on some by the "paperclip" method ... don't know if yours is doable ... if it is .. instructions and a video here ..

http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

if it isn't then its expensive Vx visit .. or cheaper to one of the 2 on the forum ... :) but from Ireland its a long way !!  :(
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 20 December 2007, 00:05:00
it looks like VX for me then s--- one just befor santa to,is it bad to drive it :-?                                                                              ;) ;)    thanks for the help lads drive safe and have a merry one  ;) ;)
Title: Re: miss fire,or dirty petrol
Post by: ghondie on 20 December 2007, 00:09:07
realy i would suspect on how far it is to the closest VX and if you think the car can make it there, failing that can you get somebody to tow you?

regards
Title: Re: miss fire,or dirty petrol
Post by: Auto Addict on 20 December 2007, 06:25:36
Sounds like the typical cam sensor failure on a 2.2.
Title: Re: miss fire,or dirty petrol
Post by: Martin_1962 on 20 December 2007, 10:08:47
Cam cover gasket- read the how to - easy on a 4

Cam sensor is the 4000rpm limited problem
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 20 December 2007, 10:50:23
just got it on the computer heres the codes p0120 TPS P1120, ACCEL PEDAL POS, P1550 ELECTRIC THROTTLE, P1405 ERG VALVE CAMSHAFT SENSOR ,the guy said to try a second hand brian or disconnect the battery and see if it reset its self ,any heads up on what to do next  :-? :-?
Title: Re: miss fire,or dirty petrol
Post by: ians on 20 December 2007, 12:12:44
I have never tried a second hand 'brian' but you never know ;D ;D
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 20 December 2007, 12:17:22
VX  guy said he would fit a second hand brain for £150 and a new one is around £500 ,The guy that put the computer on it said a second hand brain would be 40 to 50 ,what do yous think  :-? :-? :-? :-?
Title: Re: miss fire,or dirty petrol
Post by: ians on 20 December 2007, 12:26:52
what I think is that he is blindly guessing and almost certainly wrong.

Sounds like he has little clue when it comes to anything electronic so its either reboot (battery) or replace the ECU.

See what people on here come up with first. :y
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 20 December 2007, 12:29:18
how do i replace the ECU :-?
Title: Re: miss fire,or dirty petrol
Post by: ians on 20 December 2007, 12:33:06
sorry I wasn't clear.

His suggestion is to disconnect battery (you can try that - its free after all) or replace the ECU (what he is calling the brain) - don't do that as its almost certainly not the problem.

From the other posters it is likely the cam sensor, but wait for others who have been there before/know the codes to confirm first (I haven't)
Title: Re: miss fire,or dirty petrol
Post by: Martin_1962 on 20 December 2007, 12:37:35
Cam sensor - as to the others I reckon a breather clean and air leak check would help.

It is not the Brian - he will be fine - even if he has ginger hair!!!!
Title: Re: miss fire,or dirty petrol
Post by: caolan_p on 20 December 2007, 12:38:34
Done the battery no joy its still the same ,how do i fix the cam sensor if this is doind it  :-?
Title: Re: miss fire,or dirty petrol
Post by: ians on 20 December 2007, 12:44:54
Its probably in your Haynes book - should be simple enough.  I couldn't see a maint guide on here though.
Title: Re: miss fire,or dirty petrol
Post by: Auto Addict on 21 December 2007, 21:35:13
Quote
Done the battery no joy its still the same ,how do i fix the cam sensor if this is doind it  :-?

Make sure you only fit a genuine Vx cam sensor.

...and have a read of this thread:- http://www.omegaowners.com/forum/YaBB.pl?num=1198250208