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Discussion Starter · #1 ·
Calling on any solutions from you Omega experts please.

I have had 5 Cats fitted by Kwik-Fit in the last 3 years on my P reg 2.0l Omega.

The first time they fitted it they sheared the bolts off where the exhaust joins the manifold and instead of redrilling and fitting new bolts they just used a nut and bolt and sealer.

Since then they have replace the cat another 4 times each time saying that it must just be a faulty cat.

I am now in the position that the cat is again breaking up but having just spoke to the KF area manager he says that it cannot be down to what they have done and something else must be causing the cat to break up.

Since they fitted the last cat in Feb' last year I have only done 7000 miles and now my engine management light has begun to come on as the cat has started to rattle and the car will not tick over on idle and is always stalling.

Is there anything else that could be causing the cat to fail or am I just unlucky?

Any help in solving this problem would be greatly appreciated.
 

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Have you had misfiring issues before cat started playing up? as misfiring will cause cat to fail over time as unburnt fuel goes down exhaust and kills the cat. the cat alone will not put em light on but check/replace leads plugs and dispack first, get you engine running right then its a new cat im afraid.

Nick
 

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I assume you never go up kerbs or exceed 10mph over speed bumps! or for that matter drive it down unmade roads! If you knock the cat, even once, it is goodbye cat! A misfire will destroy the catalyst, but i did not think it would make it physically break up!
The original cat would have been more robust against physical damage!
Since KF seems to be botching the install they could be applying high stresses to the cat which is causing deformation of the thin case and then cat matrix break up!
 

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I've seen how these cats are treated before they get to quick fit. south east essex area. But dought its any differnt anywhere else. I went from work to kwick fit gave them car. ExHaust was ordered and came from unit opposite my work. Then, when fitted I went back to work. SIX MONTHS LATER IT FAILED sTARTED BLOWING TOOK THE CAR BACK TO KWICK FIT from work they ordered replacement. That came from unit opposite my work. It got fitted, my old exhaust went back and then in skip outside unit. I collected car went back to work removed exaust. took old one out of skip and refited it. (small hole in crease). Got another 8months out of it lol.

But they do get abused in transport.
 

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I assume you never go up kerbs or exceed 10mph over speed bumps! or for that matter drive it down unmade roads! If you knock the cat, even once, it is goodbye cat!
I think this is overstating the problem somewhat. I've done 60k on the same cat and I definately go up kerbs and exceed 10mph over speed bumps. They ain't that delicate.
 

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VXON Resident 4x4 and diesel specialist
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try this customer complaints charter usually works they take it to other branch

Quality

You should be delighted with the products you receive from us. If you have any query or complaint about the quality of the merchandise you have ordered and received please contact our Head Office Customer Service Team by letter, email, telephone or fax as noted above

http://www.kwik-fit.com/online-shop.asp?s=5
 

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an example of the skilled tech's that kwik fit have,hello my aircon is not working .ok il have a look ,20 min's later i had to point out to him that is not the hook up for the air con

thats the fuel line shreader valve? id trust my 3 year old more than them.

in the end i refilled the aircon myself and showed the guy how to do it.****'s of the highest order.
 

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www.morderstein.com
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I wonder if the O2 sensor is all that it should be - if it's buggered, it'll be telling the ECU to dump more fuel in, which might not be getting properly burnt and shagging the cat in the process?
Knackered O2 (Lambda sensor, call it what you will), can get the EML light on.

Or even the Coolant Temperature Sensor.


Oh, and don't go to **** Fit!
 

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Discussion Starter · #13 ·
Hi

Thanks for all your replies. Apologies for not getting back on here sooner but have just got out of hospital after suffering from kidney stones. Hope none of you ever suffer from them as they are bl***y painful!

I have checked back to what I have had done on the car regarding sensors and when the cat went last time I had all the following replaced (all genuine Vauxhall Parts from Murketts my local Dealer).

Crank Sensor, Lambda Sensor, Temp' Sensor and I have a bill for the fitting of a "Knock Sensor". All these were fitted by my local garage who unfortunately is no longer around although before he went bust he had a very good reputation so I do not think he did anything wrong....wish he was still around!

I know the KF took the Lambda sensor out when they last did the cat and re-fitted it and all was well until now.

I have been told by a friend (not a mechanic, but he used to have an Omega) that my stalling problem could be the Idle Control Valve as he had this problem once and that there is a way to solve this rather than fitting a new valve so any advice on this would be appreciated and on how to fit a "Firetrap" and where this is fitted! I can handle minor things under the bonnet if necessary or am prepared to have a go!

Am considering giving up on KF and buying a cat seperately and finding another garage to fit it for me...Is this a better idea do you think.

Money is very tight at the mo' as it is with most people so, whatever is the cheaperst options in your wise opinions would be appreciated.

Once again, many thanks for your input..It is most welcome and gratefully received.
 

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www.morderstein.com
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Cleaning the ICV is very simple.

Remove it and the pipes to it.
Remove pipes.
Squirt a decent amount of WD40 (or similar) into it, stick yer fingers over the ends and shake it vigourously.
If the WD40 is mucky when you drain it, do it again until it runs clear.
Same for the pipes.
Drop three or four drops of light oil (3-IN-1 or similar) into the workings of the ICV, and refit the lot. If you don't oil it, it is possible it can seize.
Refit, job's done.

Go have a nice cuppa - you've earned it!!
 

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just a thought are they puting the exhaust gasket stuff from a tube on,if thats getting into the cat,it forms a hot spot and kills the cat
 

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not all kwik fits are bad i worked for my local one for just over 2 years and never had any custermer complaints you do get good ones.

just because you have had sensors changed in the past dont mean that it hasnt failed again id go to vauxhall an get them to run a diagnostic thest make sure theres no faults with the engine caseing the cat to fail.


also check the engine mounts arent worn causeing vibration thro engine exhaust system.
go back to kwik fit and get them to fit a cat from CES better quility part than the unipart cats they use.
 

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VXon Frontera Monkey
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9,886 Posts
Hi you could ask them to get a 'metal' cat - most of the Kwik fit ones are 'ceramic' and these do suffer when splashed by cold water and vibration problems - whereas metal cats are a lot stronger
cheers
Steve
 
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