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Author Topic: Exhaust  (Read 862 times)

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charlieboy

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Exhaust
« on: 02 January 2018, 09:05:07 »

Hi, here I am again seeking your help and advice, out driving yesterday and a light flashed on the dash board, then stayed on.   The one in question was the symbol headed exhaust  emissions....... contact your dealer immediatly. can anyone tell me what exactly the problem is? many thanks, (also thanks for helping me in the past)
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charlieboy

tunnie

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Re: Exhaust
« Reply #1 on: 02 January 2018, 09:11:48 »

What engine/year is your car?

Need to know if it’s a V6 or diesel for example.  :y
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tunnie

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Re: Exhaust
« Reply #2 on: 02 January 2018, 09:34:32 »

Quick search of your previous posts suggest you have a 2.6 V6, you need to do the “pedal trick” to get fault codes from the car. (Details in guides section)

Most likely fault though is pre-cats have degraded, giving high reading causing the error/light. There is no real issue, can be driven perfectly fine, without issue.

The solution is to move the o2 sensors post main cat, so they get a better reading. Some members here maybe willing to do it. Cheaper fix is black tape over the light or take out the bulb  ;D

Need codes to be sure though  :y
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charlieboy

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Re: Exhaust
« Reply #3 on: 02 January 2018, 09:48:28 »

Thanks for information, My car is, as you say a 2.6 auto petrol
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charlieboy

Bigron

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Re: Exhaust
« Reply #4 on: 02 January 2018, 10:06:06 »

I had exactly that last year and was worried. I did the "pedal trick" as advised on here and it reported inefficient Cat, too.
My solution was a dose of Cataclean, Shell V-Power and an italian tune-up!
Mended!  :y

Ron.
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charlieboy

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Re: Exhaust
« Reply #5 on: 02 January 2018, 10:09:09 »

done pedal trick, I hope correctly, the readings were; 10     10 3 10 3 what does this mean?
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charlieboy

charlieboy

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Re: Exhaust
« Reply #6 on: 02 January 2018, 10:10:22 »

Thanks for your reply Ron....
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charlieboy

Fraggles Rock

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Re: Exhaust
« Reply #7 on: 02 January 2018, 11:33:02 »

0303 suggests a misfire...

Lift the driver side coil pack and check for water or oil and report back... expect one or tother in the middle plug well ;)
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TheBoy

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Re: Exhaust
« Reply #8 on: 02 January 2018, 17:05:04 »

I was going to suggest the EML symptoms suggested a misfire (not cat), and 0303 proves that.

Is that the only code?  Each code repeats 3 times, then it goes back to 1st code.

10 flashes = 0
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charlieboy

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Re: Exhaust
« Reply #9 on: 02 January 2018, 19:35:37 »

If I carried out the pedal check correctly the sequence was 10 , 10 ,3, 10 ,3 thanks for your reply.
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charlieboy

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Re: Exhaust
« Reply #10 on: 03 January 2018, 16:23:19 »

Thanks to all readers help..... Took car into vaux dealer today, they did a tech2 test and found cyl4 misfiring and random misfires, suggest new plugs which is rather costly, any other advice please? as I am getting pressurised to dump the car......
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charlieboy

Bigron

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Re: Exhaust
« Reply #11 on: 03 January 2018, 16:33:46 »

Plugs or coilpack? Someone on here may be able to help you, rather than kill the Omega!

Ron.
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terry paget

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Re: Exhaust
« Reply #12 on: 03 January 2018, 17:30:41 »

I have just rectified a misfire on my 2.6, due to water in no. 6. Cost was trivial, doing the work myself, in fact it cost me nothing. 2-4-6 is the passenger side bank. The sodden foam beneath the scuttle had dripped water on to the coil pack and it got into no. 6 plug hole. All you need to do is change the plugs and all should be well. Plugs are cheap, about £5 each from Vauxhall, on line £2 each. I just cleaned the old plugs. 
I removed the sodden foam to prevent recurrence. Some members recommended sealing the scuttle and retaining the foam, see recent thread.
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TheBoy

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Re: Exhaust
« Reply #13 on: 03 January 2018, 18:16:36 »

First port of call is to remove coil packs, and check if plug wells have oil or water in.  If so, that needs curing.

Whilst out, check coil pack condition, and replace if required.

As a matter of course, with coil packs out, I'd change the plugs, no matter what, unless they are very new.
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charlieboy

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Re: Exhaust
« Reply #14 on: 03 January 2018, 22:21:04 »

Thanks for all your help but, I am afraid Icannot do what is required, all I know about an engine is that it drives the car..... I will have to give it some thought as my garage wants about £160 to replace spark plugs and that dont include coils etc.    many thanks for all your advice MF
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