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Author Topic: Engine management light  (Read 4035 times)

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Markjay

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Re: Engine management light
« Reply #15 on: 16 January 2007, 23:32:27 »

It sits on top of the left-hand exhaust manifold (when viewed from the front). Not a bad idea to take it off and clean it with carb cleaner, though I am not sure if it will resolve your particular problem. You can try blanking it off completely, either permanently (it will not fail MOT!) or just to help diagnose the fault
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lachleaves

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Re: Engine management light
« Reply #16 on: 17 January 2007, 16:54:58 »
great help so far...

but still hoping someone can tell me what fault code 132 is??
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Marks DTM Calib

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Re: Engine management light
« Reply #17 on: 17 January 2007, 17:11:19 »
132 Exhaust Gas Re-circulation (EGR) valve Incorrect signal  
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MaxV6

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Re: Engine management light
« Reply #18 on: 17 January 2007, 17:16:59 »
don't you mean what code 129 is???

I thought  you'd already seen that 132 is the EGR valve possibly failing....

what was said earlier was that it may start stalling before the valve blows out completely...  

the fault SHOULD be fixed by replacing the EGR valve .....

the expensive part of the repair is the cost of the valve itself....    about £180 or so Ex Vat .(that's what I just paid for a brand new one from Vauxhall  last week )

( I believe the Listed full retail inc Vat is actually closer to £280...  but No one pays that much in reality ( I hope) )

typical labour charge is half an hour at whatever rate the Garage in question charges....


I have No idea what code 129 might be....  I'm not an expert in these matters... merely a fellow casualty  in recent history

regards

Max

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MaxV6

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Re: Engine management light
« Reply #19 on: 17 January 2007, 17:18:12 »
Damn, that  Mark's too fast for me !
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Marks DTM Calib

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Re: Engine management light
« Reply #20 on: 17 January 2007, 17:31:40 »
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MaxV6

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Re: Engine management light
« Reply #21 on: 17 January 2007, 18:21:59 »
Errr...    Far be it from me to point out stuff to such an esteemed deity of meegaship.....   but...

he asked earlier about codes 129 AND 132.

obviously I assumed that since 132 having been answered by several people...    was no longer the query...  he meant to ask about 129......  

which according to all the pages I've thus far read...   including the one your worshipfulness linked to... doesn't exist...

errr   damn but I sound pompously pedantic tonight.,...    beer...  that must be it... I need a beer....


Shame I'm driving backwards and forwards to brownies and parents evenings and the like....  (Not in the Elite though :( )

Lachleaves....  dunno if it's still there, or of any use to you... but I used to get very good, knowledgeable  and relatively cheap ( about half  the price I'd pay here at a VX dealer ) service from the Vauxhall dealership in Llangefni....     (seeing as your location is listed as Ynys Mon )


in fact I wish I was there now........

Max
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TheBoy

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Re: Engine management light
« Reply #22 on: 17 January 2007, 18:24:06 »
I'll look up 129, hang on...
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TheBoy

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Re: Engine management light
« Reply #23 on: 17 January 2007, 18:32:47 »
129 = EGR Feedback Voltage Low...
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lachleaves

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Re: Engine management light
« Reply #24 on: 17 January 2007, 21:22:21 »
GOD BLESS YOU ALL
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Matchless

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Re: Engine management light
« Reply #25 on: 18 January 2007, 10:06:46 »
OK, so the 132 indicates a general ELECTRICAL fault with the EGR valve and the 129 provides the detail that the valve is not returning correct position information back to the ecu. These valves are not simple open / closed devices, the ecu can tell it to move to any position between fully open and fully closed.

It is worth removing the valve and giving it a really good clean in the ports, try filling the ports with WD40 or parrafin and leaving it to stand for a while then work the valve in and out to free it off. If lucky the valve will have been physically stuck, the ecu asked it to move but it didnt so the 'incorrect (positional) feedback' code is logged. If this doesnt cure it then the fault is within the electrical head on the valve and you will need a replacement.

The EGR valve is not needed for normal running or for the MoT emissions test, it does help efficiency slightly but this is offset by drivability problems, especially as the valve carbons-up and become slow to respond. The valve ports can be blanked off to cure the drivability issues.

If a replacement valve is needed then I would get one from a breaker.
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Re: Engine management light
« Reply #26 on: 18 January 2007, 21:17:44 »
ahaaa...  i get it now!

from having the car for a week and being mega pleased, to seeing the engine management light come (and my cynical father giving it 'you see, bloody electrics on these modern cars...') - i almost understand what's going on.

i was on the verge of suicide, now there's hope in sight - thanks ever so for that explanation.

ta,
lachleaves
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Re: Engine management light
« Reply #27 on: 18 January 2007, 21:21:51 »
The EGR is generally electrically reliable. Mechanically they fail.

If cleaning doesn't sort it, get one from scrappy, but also blank it off with a bit of coke can of similar...
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lachleaves

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Re: Engine management light
« Reply #28 on: 21 January 2007, 19:02:58 »
yes, i'm still on about that EGR valve!...

you know when either i've cleaned it or replaced it - assuming it's now working, should the EML go off, or does the system need to be reset?

(i thought i'd read somewhere that the battery needs to be disconnected to reset the system - yes? no?)

oh and one more thing, a friend's told me it should run marginally better if i blanked it completely.  true?  (if it were blanked, would the EML remain on?)

ta,
lachleaves :-/
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MaxV6

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Re: Engine management light
« Reply #29 on: 21 January 2007, 20:36:59 »
AFAIK there are 2 ways to clear it.

1) visit someone witha Tech2 diagnostics system...   they can reset the system memory.

2) 20 clean system boot/starts with NO errors will clear the codes...   but this does rather require everything to be fixed first....


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