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[gazzaw]

Hi Folks,

Got a 2.2 Saloon 65k, had 3.0MV6 and loadsa Carltons, love em to bits  

Car starts really lumpy, will not pull away till left for 3-5mins to warm up, then v.low on power, will not pull up hill 15-20mph max and stalls on its own !!!!!

Vx told me o2 sensor had gone, £250, then its the other o2 sensor, another £100, then rocker cover gasket letting oil fill spark plug recesses causing shorting out, then manifold gasket, then head gasket, which had just gone, another £850 :-/, because i've run it back to the garage so often.

Could it be the egrv ? OR
iv been running tesco cheap cr*p for sometime and have just read bad reports ?

Just read on an astra site that all of my symptoms have been put down to o2 sensors, coils, egrvs, breather pipes, faulty ecus, but replacing faulty egrv seemed to be the most common.

I don't wanna get rid, coz the car is immaculate and I just love how they drive, please stop my missus avin the excuse to give me grief about keepin my pride and joy shes had 4 Carltons and Omegas including MV6 auto estate she shud be more sympathetic  

[Elite Pete]

Try the paper clip test.

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

[gazzaw]

Hi Elite Pete,

Sorry, forgot to mention EM codes show several different problems, even when cleared and light just come on, from low voltage to o2 sensor (again), the independant garage who fixed the Head have tried to resolve, but there are so many problems showing up he doesn't know where to start ! It shows a minimum of 5 different codes which doesn't point to any one thing.

Hence my visit here, I thought I would try the old fashioned experience thing rather than a bl**dy computer and I'm an IT Manager  

[TheBoy]

Post up the codes anyway...

[gazzaw]

Hi,

I will have to go back to the garage for the codes, will get back to you on this.

btw when i start the car from cold, it "pops" small explosions in the manifold or downpipe of the exhaust.  With my limited amount of knowledge, this requires a rich mixture, which if it is missing it will have, but doesn't it require clean air ?  Does this suggest egrv stuck ?

[Markie]

I suggest get it out the mits of the garage, paper clip it and post the results.

We can then work through any fault codes.
I`d also suggest a weekend cleaning breathers, IACV, EGR Valve etc.

O2 sensors and rockers are also easily do-able at home.

Just a case of working away through the issues...

[Auto Addict]

Try the paper clip test.

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

If we're talking about the 2.2, you can't paperclip test it.

[mark readman]

Is it loosing any water ?
If not un plug the can sensor when it's running, it's the wiring plug under the spark plug cover engine end, on the latch plug and see if makes any difference, if it runs worse then it's ok, if it makes no difference then its buggered they are a know problem on these and even worse if it has a cheap italian one fitted.
They can throw up several codes, as the engine fails to detect it then installs a default value to start the car (2 codes) then fails to get correlation from the (4th cod) then another for crank/ cam sensor (5th code) alignment then switches in to limp mode and finally calls for low power from the engine, all in around 5 codes is not uncommon
p1700 is the call for less power code and the usual suspect that the cam sensor has caused all the rest !
 
Most common problems on this engine are, the cam sensor, the crank sensor, the head gasket dreaded pot 4 failure !! and the Airflow meter.

[Marks DTM Calib]

Actually, the single bigges problem on these is the cam sensor

Add your location as there may be a tech2 close by

[TheBoy]

I think even cheapo tech2 can read the codes?

[Jimbob]

I think even cheapo tech2 can read the codes?

ohh yes

[gazzaw]

Cheers guys, it is a 2.2 and I have found an independant who seems to be very genuine, I live in Chadderton Oldham, which is North Manchester.  It isn't losing water(now I've had the head gasket replaced !), I'll take it into him on Tuesday with a copy of all of your comments, he knows I'm on here and he's happy to resolve the issue for me, he will take them in any order I want.

The car has improved over the past couple of days, it is still horrible on startup, runs like its firing on one cylinder, then after 3-5mins on tickover, settles down and runs quite well, but with low power and surges, then runs quite good, showing the engine itself is fine, just something strangling it.  It even pulls well from time to time, but only if you floor it.  

Why when its on tickover and lumpy as hell, does the power assisted brakes not work properly ?  This happens everytime, but once, even when I set off from our house up hill but slowly, so running (ok ish), got to a junction after 100mts and brakes were non-existant, but fine after that ?

The car has had two new bumpers recently, after two minor knocks, the car has full vsh, only 68k miles, is abs mint inside and out no dents and no body panels replaced and I got offered £750 p/ex without them knowing about engine probs !  

I'm not getting rid, the car is gorgeous has passed it's mot 1st time for the last three years and handles superb, going to France twice, Dorset three times and Wales five times, all of the brit holidays, towing our rib. It has never let me down and I've still not found anything to replace it and I'm a car nut.  Funny how you get attached to cars init ?  

I'll let you know how it gets on after egrv replaced and I will ask him to check the cam sensor first.  I replaced cam sensor on our MV6 estate, but symptoms totally different, but he will check it out for me.

[gazzaw]

Hi Folks,

Just thought I would give you an update, car is fixed now, after replacing EGRV, but it was the Maff Air Flow sensor £30+ on e-bay  

Not bad for a £1300+ layout (£500 Vx, £800 Independant including Head Gasket replacement which blew !), at least the independant garage sorted it for me, theres no way I'm going back to Vx again ever, but it is damn nice having my fave car back again, it's been running rough for 5months now.

Anyway, thanks for all of your comments and help, I hope I won't have to come back too soon, but if I have to, you will be the my first port of call. CHEERS gazzaw