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[TheBoy]

Jamies rates are too cheap as i told him in a recent message to him....vx stealers charge more than double....but will he listen....probably not...coz he's too kind hearted  

Tenner in the post

[x25xe]

Hmmm, based on the codes and the behaviour, I would suspect a blocked exhaust, most likely a blocked cat.

At 5k rpm or so, it won't "jump" a tooth or 2 on the cams, it will let go in a very impressive manner!

Thats good to know..   Phew!


With regards to the EGR Blanking off post above.. What does that entail?

Blocked exhaust is also a very strong possibility.  To blank of the EGR, you need to remove it from the manifold.  The hole that is then exposed is then blocked by means of a thin piece of metal - the side of a coke can etc. - and the valve is then put back on.  This will not clear the fault, but it will stop the exhaust gas being drawn into the engine when it should not.

As others have said (as as I should have ) check all the wiring connectors are pushed home etc.

I hope that this explains it better - if not post again.  I will try and put some pictures up later of the EGR valve so you know what you are looking for at least.

As promised, here we go with the pics of the EGR valve.  This is from my 1998 mini facelift.

Firstly, the EGR valve itself which is on the drivers side of the engine (left hand cylinder bank):



Next, is the connection between the exhaust manifold and the base of the EGR valve:



and this is where the top of the valve mounts on the Plenum (the silver top of the engine with ECOTEC written on it):



I guess that either the base of the valve, the shiny silver part in the first pic where it meets the older looking metal, or at the plenum would be the best places to blank it off if you choose to take this route.

I will be interested to see how you get on with resolving this issue.

Hope this helps in some way.  Good Luck

****EDIT****

Edited to correct spelling of best and include what I was going to say about blanking at either the base or the plenum.

[Gaffers]

What about blocking it off where it meets the plenum, easier to get those bolts off than the rusted ones at the base of the egr, mine is the same as the one in the pics and I dont fancy doing that.

Btw I will pop down on sat am, will call when on route.  

[x25xe]

What about blocking it off where it meets the plenum, easier to get those bolts off than the rusted ones at the base of the egr, mine is the same as the one in the pics and I dont fancy doing that.

Btw I will pop down on sat am, will call when on route.  

Agreed.  I ment to suggest this area as well, but this got missed of my post    Now edited to correct this and a typo!

[ians]

I think I would still go for the base (I've removed those bolts on a number of EGR's when replacing mine - they are stiff but generally come out ok), mainly because I think there is risk of stripping the thread on the alloy plenum - esp if trying to insert a foreign body between EGR and plenum.

[doughall]

Btw I will pop down on sat am, will call when on route.  

That'd be brill!

the EPG thing; I don't really have the proper tools, (torx), although I could get round it.. (but I wont! :-) )

Again, thanks guys!

Back with my Missus's Escort for the mo.. :-)

I'll report back soon!

[ians]

Doug,

If you intend doing any work on your Omega - even the simplest thing like changing oil - you will need a set of torx bits/sockets.
Machine Mart do a nice set for about 15 quid as I recall (there's one in Swindon).

Cheers,
Ian

[doughall]

Doug,

If you intend doing any work on your Omega - even the simplest thing like changing oil - you will need a set of torx bits/sockets.
Machine Mart do a nice set for about 15 quid as I recall (there's one in Swindon).

Cheers,
Ian

Of course! I definatley intend on getting a set. Just haven't had the time just yet..
Thanks for refering to the Swindon shop!

[ians]

This is the one I got.

http://www.machinemart.co.uk/shop/product/details/pro151-29-pce-metric-socket-set

[Gaffers]

Reference this weekend I will have to delay slightly on Saturday.  Its now looking like sat lunchtime as I have to put some of my guys on a plane to hot and sandy climbs in the morning.  Once that is done I will be up the A338 like a firework in the sky to hopefully get you back on the road to recovery (or at least a diagnosis)

To clarify I will first check timing belt (unlikely to have slipped I know but you cant be too careful and I have the tools)  Then we will isolate the egr and if that isnt the problem then we should assume a blocked cat so compare exhaust flow between our two cars.  If we think it is the cat we can drill a hole to confirm and then you can decide if you want to get the work done to chance or if you want to sell it someone on here.  Again I have all the tools we need for this so dont go buying stuff until you know you want to keep the car, but then if it just one of these small things the cost to repair isnt too high and will give you many miles of driving pleasure - as many of you will agree.

**edit** Just a thought have you a garage or somewhere under cover we can work if this wonderful weather carries on? **edit**

I will call once en route.

Gaffers

[doughall]

I will have to delay slightly on Saturday.  Its now looking like sat lunchtime as I have to put some of my guys on a plane to hot and sandy climbs in the morning.  

Cool. Lay-in for me! :-) HeHe!

I'll just trust your judgment on what we'll be doing to the car!

I do have a garage, (of some description), and will dip the front end of the car in it if weather carries on like this!

Again, thanks!! :-)

[doughall]

For whats its worth from VXON.. (Sorry for straying! :-) )

Guys not sure what the original post reports ( read it ALL after some scrummpy ) but in a spirited drive down the back roads round my way , very tight twisty b roads had a motorbike closing in on me, the omega was never going to pull away but thought i'd give him something to watch before the road straightened out, well some back end action and huge RPM the corners ended and off he blasted past me. I then noticed the Omega surging ,thought I'd fu55ed something. It was only doing this on constant long runs ie half mile or more stretches at a constent speed, it had a very slight surge. I spent ages checking it all out , computer read outs and everything . Wasn't till I took off the back box to remove the baffles and fit a nice HSV finisher that I came across the problem...............

The baffle fibres were blocking the box complety. The back box was blocked.

I cut open the box removed the baffles, added the tip and it sorted it instantly.

They must of got forced back during my thrashing and blocked th ebox thus causing back pressure and the underlining fault.

Just a tail from mt travels.......

[Markjay]

I think you need to eliminate the possibility of a slipped cambelt before driving the car again - the slipped cambelt can be as result of a failed tensioner, which will also explain the rumbling noise....

[Marks DTM Calib]

Your first ports of call need to be

1) Check the wiring and main connectors at the rear of the battery tray.....the fault codes sudgest this as number one cause....

2) Check the cam timing....

Dont do anything else until this is done as it will only add unknowns if you go down a blind alley....

The fault codes dont sudgest a blocked exhaust....the miss fire does not sudgest a blocked exhaust.....and the fact that the exhaust and/or air injection couplers have not ruptured sudgests its not a blocked exhaust......

[doughall]

My head hurts!  

I'm ganna leave it till the expert gets here on Saturday!
(Although I have already checked as many plugs/fuses/connectors/cables/Oojimmy-flippie-things as I could the otehr day.. Looked ok)