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1

Omega General Help / Re: omega bogging down + revving by itself

« on: 14 April 2011, 17:50:55 »

Regarding the fault codes in reply 11, I'd be tempted to check the charging system; in other words what voltage do you get across the battery terminals with engine running?

Hi, voltage going to the battery when running is coming up 13.55v to 13.77v (did the same test my a rover 620 that we also have and that comes up at 14.19v) not sure if all cars with same size engine put the same voltage to the battery or not? but if they do then there does seem to be a 1v differance.

2

Omega General Help / Re: omega bogging down + revving by itself

« on: 14 April 2011, 11:08:20 »

the fuel is not old, i put new fuel in the car the other day after changing the fuel filter and cleaning the iacv. we have 3 cars and a motorbike and use the same shell garage for all of them and none of the other cars or bike have any problems with the fuel from there. Im going to take the iacv off again today and give it another clean with carb cleaner to see if i missed anything. i used petrol to clean it the first time. so gonna try carb cleaner this time to see if that helps, maybe the petrol missed a bit lol.
(when the car did idle fine it was around 800-900rpm i believe)
but with the auto revving it dosnt settle down lol.

(no grey smoke by the way)

3

Omega General Help / Re: omega bogging down + revving by itself

« on: 13 April 2011, 22:45:30 »

https://picasaweb.google.com/lh/photo/pBWAQWNzKBp7yVM1xE7i_w?feat=directlink

not sure whats happening when i paste the link into the reply box, it keeps seperating the link lol, if you copy the whole link into your browser it should work. copy the whole link right upto the word direct link and it should work.

Im pretty sure theres no fuel leak anywhere, I have checked the fuel regulaters and could not find any problems there either :¬(
and ive already had the iacv out and cleaned thougherly so this problem is really strange

4

Omega General Help / Re: omega bogging down + revving by itself

« on: 13 April 2011, 18:41:24 »

Update on the car:
the power problem seems to have gone since fitting the mass air flow sensor  lets hope it stays that way.
now the only other main problem is when the car is in park it auto revvs itself.

I have taken a short video of the rev counter to show what is happening. the car is in park with the foot off the accelerator.

https://picasaweb.google.com/lh/photo/pBWAQWNzKBp7yVM1xE7i_6gKj0ENWKc140CJQsv1gt
M?feat=directlink

5

Omega General Help / Re: omega bogging down + revving by itself

« on: 13 April 2011, 14:12:47 »

Hi again, I have checked all pipes etc,, and could not find any problems, fuel filter has been changed, mass air flow has also now been changed for a second hand one from ebay (I broke the original one when cleaning it lol, but i did think that the one i broke may of been faulty anyway)
I have also now done the paper clip trick to obtain error codes, and i get 4 codes which are:
0-2-3-0      Fuel Pump Relay Voltage High/low
0-5-0-5      Idle Air Control Voltage High/low
0-1-0-0      Mass Air Flow Sensor Voltage High/low
1-2-3-0      Power Supply Relay Secondary Circuit Voltage Low

Now my question about these codes is: How do i go about fixing/testing for these codes?
many thanks in advance for any help anyone can provide me.

6

Omega General Help / Re: omega bogging down + revving by itself

« on: 08 April 2011, 12:55:15 »

hi everyone, I will cheak everything that has been mentioned today and report back, I am also changing the fuel filter today to see if that helps, as im not sure its ever been changed since the car was made lol.

7

Omega General Help / Re: omega bogging down + revving by itself

« on: 07 April 2011, 21:45:08 »

Was the problem there before you did the breather clean .. or has it appeared after

If after then its more likely to be something you've not reconnected properly, or the plenum is not seated properly.

HTH 

no, the problem was there before I started, apart from the revving up, which has happened before but not recently, and now its back lol

8

Omega General Help / omega bogging down + revving by itself

« on: 07 April 2011, 21:19:49 »

Hi, I have a 1998 2l auto omega which bogs down intermittently under hard acceleration, then when hot, revs up and down on idle in park. I have just done the full IACV and Breather Jet clean by following the guide I found on this forum. New plugs were fitted 500 miles ago but it seems to be missing badly at times and power delivery is uneven under acceleration. Has this happened to someone else that could maybe advise me how to fix this please?