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[ReliantSkydiver]

Sorry if this all sounds a bit 'green', however........... Had a cambelt kit change yesterday on 2.6 MV6 (sorry but had to go to Vauxhall (who charged £430 for the privilege)! - no trustworthy independant in local area would do it!). After a couple of miles of getting it back, the exhaust emission light has come on.

The main difference I've noticed is that when first started, the engine revs to about 1.5k rpm and stays for about two seconds before falling down to idle speed. (this didn't ever happen before it went in to Vauxhall, it never revved to more than 1k even when stone cold). The said it was a 'tooth' out but they say this is sorted now.

The exhaust is smoking/steaming, although this has been happening for a few weeks now, although any problems prior to the cambelt changed relating to this had been ruled out by Vauxhall as they carried out a block test and are certain that it is just condensation.

Spent nearly £1k on it this year and it's starting to run me down now!!! I'm taking it back to them tomorrow, can anyone give me any idea as to what they may have done when changing the cambelt? Any ideas would be greatly appreciated, don't fancy forking out any more cash if this is their error. Low mileage too only 78k.

As always, many thanks.

[jonathanh]

emission light = they've buggered something up.  which light is it EML or emission? 

sounds like an air leak to me - worth checking all vac pipes for a start

don't worry about the exaust steam - that's normal on the omega

where did you take it?  Tile hill vauxhall in coventry treated me ok - actually one of the guys there was pretty knowedgable on the omega.

[ReliantSkydiver]

It's definitely emissions light. Went to Bridge Vauxhall, Stratford-upon-Avon. Like I say, they're having it back tomorrow, just could do with some firepower to throw should they try to fob me off (had trouble with Vauxhall Dealerships before, I try to avoid them at all costs).

[jonathanh]

cambelt change should have been as follows

front air inlet pipes off ( and may have disconnected a vac pipe or two to do this)
aux belt off
cambelt cover off
change belt and refit

they may have removed the plenum as well ( don't think there is a need on 2.6) and if so they may have caused an air leak

[aaronjb]

Pedal trick it and post up the code(s) for us.

[ReliantSkydiver]

Well, I've just learnt the pedal trick, told you I was 'green'!

Codes are 10 1 7 10      and 10 1 7 3

[Entwood]

Well, I've just learnt the pedal trick, told you I was 'green'!

Codes are 10 1 7 10      and 10 1 7 3

Fuel trims are out on both banks ... that points at the MAF to me .... or a major vac leak ...

Some detailed info here ..

http://www.obd-codes.com/p0170

[ReliantSkydiver]

Is there a fair chance that Vauxhall could have caused this when replacing the cambelt yesterday?

[GastronomicKleptomaniac]

Is there a fair chance that Vauxhall could have caused this when replacing the cambelt yesterday?

Very much so - either a disturbed connection or pipe. Get one of the travelling OOFers to go through it with a fine toothcomb, then send the invoice to the dealer, IMHO - they've already tried to fix it once to no avail...

 Out of interest, can Tech2 see the dates and times that codes were logged?

How does it feel to drive?

[ReliantSkydiver]

Feels ok to drive, although only done about 5 miles since fault showed up and certainly haven't open the taps to see if performance has been affected. Although it does rev a lot higher on first start up, and possibly a bit more lumpy.

To be fair, I only phoned them today and they seem very willing to look at it tomorrow. Therefore it hasn't hit Tech2 or anything yet.  Thanks loads to everyone for the advice (as always), it certainly gives me something to use should they try to charge me.

[aaronjb]

Well, I've just learnt the pedal trick, told you I was 'green'!

Codes are 10 1 7 10      and 10 1 7 3

Fuel trims are out on both banks ... that points at the MAF to me .... or a major vac leak ...

Some detailed info here ..

http://www.obd-codes.com/p0170

My money is on a vacuum leak from a disturbed tinytiny vacuum pipe.. which is a bit of a sod to diagnose over the interwebs

[noel]

Well, I've just learnt the pedal trick, told you I was 'green'!

Codes are 10 1 7 10      and 10 1 7 3

Fuel trims are out on both banks ... that points at the MAF to me .... or a major vac leak ...

Some detailed info here ..

http://www.obd-codes.com/p0170

My money is on a vacuum leak from a disturbed tinytiny vacuum pipe..

x1

[JamesV6CDX]

I'm not so sure a small vacc leak would do this. I'd say it would have to be a more significant amount of unmetered air, after the MAF...

I'd love to check how well they set up the timing!!!!!

OP, if it's driving ok otherwise (Eg no misfires) and you want to pop it over to Gloucester this weekend, I'll happily take a peek

[jonathanh]

hmm - have a good look at the air intakes from the MAF through to the throttle body.  There is possibly a hole somewhere...

make sure you look in the corrugated flexible sections, there may be a crack in there through age ( not unknown on the vec B but not heard of on omega to my knowledge)

happy to have a nosey for you as well tomorrow evening if it helps I'm near birmingham airport

[kcl]

0170 and 0173 being MAF codes I'd suspect a loose connector on MAF, have you checked this? Also they may have put the MAF upside down if the monkeys have taken all intake apart.

Vac leak causing these codes would be major and would definately make the car run very very poor if at all.

Check and re-check MAF plug, throttle motor plug and small vac connections in the intake pipework. And the small vac connector under the nose of plenum