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31

Omega General Help / Re: 2.0 idling between 1200 to 1800 rpm

« on: 04 April 2007, 21:05:31 »

The butterfly is fully closed.  What puzzles me is that the car is not only idling very fast, it is revving up and down between 1200 and 1800. Any ideas what may cause this variation?

32

Omega General Help / Re: 2.0 idling between 1200 to 1800 rpm

« on: 04 April 2007, 19:00:18 »

Well, I've removed and cleaned the rear breather pipe and fitted a new gasket. It made no difference, so I removed the throttle body, cleaned it, cleaned the ICV and replaced all gaskets. Still same symptoms.
On tickover it is just as though I am sitting with my foot on the throttle increasing the revs between 1200 and 1800 at around 1 second intervals.
Any more ideas please guys?

33

Omega General Help / Re: 2.0 idling between 1200 to 1800 rpm

« on: 02 April 2007, 19:27:11 »

BTW - how do you get to the pipe that goes down at the rear nearside of the engine? Do you remove it and if so how on earth do you get access?

Cheers

Ian

With great difficulty on a 2.0, you need a thin arm and a rubber wrist.

Did my mates a while back, it was the longest part of the job.

A rachet spanner helps.

I'm hoping to have a go at the rear breather tomorrow, but the b@st@rd bonnet fell on my right hand yesterday and its swelled up to twice the size, so how i'm gonna slide it down the side of the exhaust God knows!!

34

Omega General Help / Re: 2.0 idling between 1200 to 1800 rpm

« on: 01 April 2007, 21:50:44 »

No, I have not completely removed the throttle body, do I need to?  Is the cam to sump breather the one at the back of the engine with a black box that joins to a metal pipe? Sorry, I can't find the 2.2 guide, could you point me in the right direction please!?
Sorry, this isn't an April fool, I'm no mechanic, just a keen amateur.

35

Omega General Help / 2.0 idling between 1200 to 1800 rpm

« on: 01 April 2007, 18:04:39 »

Hi guys, I have read several posts about this problem and mine is suffering from it. It idles ok when cold and even when temp is normal it's ok, but after about 15 mins of driving the tickover hunts rapidly between 1200 and 1800 rpm. Bit of a pain. I've read about blocked breathers but I can't seem to find the guide on the 2.0. How many pipes are there? I've cleaned the one from the cover to the air intake and replaced the smaller one beside it. Are there any more that will need looking at? I've also cleaned around the butterfly with carb cleaner but it's still the same. Any further advice please?

36

Omega General Help / Re:  2.0 Idle hunting

« on: 05 April 2007, 18:17:57 »

Sorted it Ian. The butterfly was slightly open although the throttle cable was slack. I adjusted the butterfly and it runs beautifully.   Thanks to everyone for the help.
Alan.

37

Omega General Help / Re:  2.0 Idle hunting

« on: 05 April 2007, 15:10:47 »

Thanks guys. I have claened all the pipes etc and they are now all clear. The idle speed has increased since I did this. I have just taken off the ICV and cleaned it again. No change. When the engine is warm and it is idling at 1800 rpm I removed the ICV electrical connection and this made no difference. Is this normal or does it point to a faulty ICV. I've spent enough money on this motor and I don't want to get an ICV if it's unneccesary. In fact, if I don't sort it soon it's going!!
Alan.

38

Omega General Help / Re:  2.0 Idle hunting

« on: 05 April 2007, 13:06:15 »

I've tried all that Ian. No luck, in fact I think that it's probably worse! It's idling at up to 2000 revs now and being an auto it makes it very awkward to drive. (Brakes are good though!)
Alan.

39

Omega General Help / Re:  2.0 Idle hunting

« on: 05 April 2007, 10:09:03 »

Thanks Craig, I'll have another look. It's starting to do my head in!
Alan.

40

Omega General Help / Re:  2.0 Idle hunting

« on: 05 April 2007, 07:52:02 »

Hi Ian & Craig,
Have you got to the bottom of this problem yet? I am getting exactlty the same symptoms as you.  I have cleaned all the breathers including the rear sump pipe (that was really gunged up) and cleaned the throttle body and ICV.  Checked the butterfly is closed fully and there is slack in the throttle cable. Still just the same.  I don't know what to try next.
Alan.

41

Omega General Help / Re: Noisy aircon pump

« on: 01 April 2007, 17:58:40 »

Thanks, sorted it out size 1715 fits a treat!

42

Omega General Help / Noisy aircon pump

« on: 31 March 2007, 16:35:09 »

The aircon pump on my omega 2.0 gls auto became very noisy yesterday and I was hoping to get around it temporarily by fitting a new belt and bypassing the pump. The mechanic ordered a belt for a non aircon model but it was the wrong size. Has anyone fitted a smaller belt and if so what size?
Thanks.

43

Newbie Welcome Area / Re: New member - new owner!

« on: 31 March 2007, 14:20:46 »

Thanks for all your welcome messages.
A mechanic friend is sorting out the "knocking" at the moment. He says it needs a drop link on the o/s and a track rod on the n/s. Hope to get the car back later today and go for a "quiet" cruise!
I changed the 8mm breather pipe yesterday as it had gone all manky, I couldn't blow through it, the larger pipe was clear, I haven't had time to see if it has cured the high revs problem yet.

44

Newbie Welcome Area / New member - new owner!

« on: 29 March 2007, 12:37:43 »

Hi all, Just thought I'd say hello and thank you for a brilliant forum. I've found out loads of info already by reading the previous posts.
Just got my 1st Omega. It's a 1997 'P' 2.0 GLS Auto saloon. I did a straight swap with one of my sons friends for a 1996 Pug 106 1.5D. Good swap I recon. He was fed up with putting fuel in the Omega as he has to drive around during the day for his job and I was fed up with shoe-horning myself into the 106 (I'm 6ft 2).
The Omega is pretty tidy, but has the knocking when going over bumps and the rising revs on tickover problem. I am hoping to get the wishbones checked in the next couple of days and clear out the breathers (could someone give me a clue where they are?!).
On the plus side there is a lot of recent main dealer service history with the car. The cambelt was changed at 82,000. The car has now covered 106,000. How ofter should the cambelt be changed?
I am loving driving the car, I'd forgotten how nice these big Vauxhalls are. I would have preferred a 3.0 Elite but beggars can't be choosers!