Prev: Removing a polish smell
Next: Jaguar X-type 2005 2LTR Diesel
From: Mrcheerful on 12 Jun 2010 04:16
A.Clews(a)DENTURESsussex.ac.uk wrote:
> Thus spake 4square (cordery4(a)whsmithnet.co.uk) unto the assembled
> multitudes:
>
>>> My GF had this happen with her Corsa. The dealer disconnected the
>>> EGR (she didn't want to pay $$$ for a new one) and it runs fine now.
>
>> So just pull wiring socket from the EGR? Will the engine management
>> light stay on all the time? I dont suppose it really matters though
>> if it runs OK. might try as temporary measure, as its weekend now.
>> Thank you all for replies so far.
>
> No warning light comes on in my GF's car. I don't know exactly what
> the dealer actually did, but basically they did something that
> stopped the sticky EGR valve from upsetting the engine management.
> Whether or not that was a simple plug disconnection I don't know (I
> am after all relying on my GF's slightly sketchy description of what
> they told her!). I'm not sure however if this solution would result
> in problems at the next MOT.

some vauxhalls can have the ecu reprogrammed to remove the egr from the
program, unfortunately this only applies to certain models/ecu types. the
egr sometimes just gets a bit of coke stuck in it, which is enough to ruin
the idle, sometimes it comes out on its own. having the egr working or not
does not seem to effect the mot emissions afaik.


From: 4square on 12 Jun 2010 04:51
On Jun 12, 9:16 am, "Mrcheerful" <nbk...(a)hotmail.co.uk> wrote:
> A.Cl...(a)DENTURESsussex.ac.uk wrote:
> > Thus spake 4square (corde...(a)whsmithnet.co.uk) unto the assembled
> > multitudes:
>
> >>> My GF had this happen with her Corsa. The dealer disconnected the
> >>> EGR (she didn't want to pay $$$ for a new one) and it runs fine now.
>
> >> So just pull wiring socket from the EGR? Will the engine management
> >> light stay on all the time? I dont suppose it really matters though
> >> if it runs OK. might try as temporary measure, as its weekend now.
> >> Thank you all for replies so far.
>
> > No warning light comes on in my GF's car.  I don't know exactly what
> > the dealer actually did, but basically they did something that
> > stopped the sticky EGR valve from upsetting the engine management.
> > Whether or not that was a simple plug disconnection I don't know (I
> > am after all relying on my GF's slightly sketchy description of what
> > they told her!). I'm not sure however if this solution would result
> > in problems at the next MOT.
>
> some vauxhalls can have the ecu reprogrammed to remove the egr from the
> program, unfortunately this only applies to certain models/ecu types.  the
> egr sometimes just gets a bit of coke stuck in it, which is enough to ruin
> the idle, sometimes it comes out on its own.  having the egr working or not
> does not seem to effect the mot emissions afaik.- Hide quoted text -
>
> - Show quoted text -

Taking it in to local independent garage for diagnosis this afternoon.
From my description, they suspect the coil-pack, something failing
when hot. I shall let you know the result.
From: 4square on 13 Jun 2010 07:36
On Jun 13, 10:49 am, A.Cl...(a)DENTURESsussex.ac.uk wrote:
> Thus spake Mrcheerful (nbk...(a)hotmail.co.uk) unto the assembled multitudes:
>
> > some vauxhalls can have the ecu reprogrammed to remove the egr from the
> > program, unfortunately this only applies to certain models/ecu types.  the
> > egr sometimes just gets a bit of coke stuck in it, which is enough to ruin
> > the idle, sometimes it comes out on its own.  having the egr working or not
> > does not seem to effect the mot emissions afaik.
>
> Certainly before my GF's car was 'fixed', the engine sounded like a diesel
> when it was idling, and acceleration was uneven and poor.  
>
> --
>                                  Andy Clews
>                             University of Sussex
>                  *** Remove DENTURES if replying by email ***

Took to garage, with EML on. The analyser read 'coil pack fault', and
no other faults.
Fitter replaced spark plugs with new ones, and fault gone, EML out and
running well again.
Car was OK on way home, and tested it again this morning. OK for
about 20 miles, then when hot, EML on again, and running rough. So,
I reckon a new coil-pack needed. About £100 I think.

I find it a bit odd, that the fault went with new plugs at garage,
when the engine was hot at the time. There does seem some
inconsistency here. Does make me wonder if its a bad connection but
that would surely be same when cold or hot engine?
From: Mrcheerful on 13 Jun 2010 08:17
4square wrote:
> On Jun 13, 10:49 am, A.Cl...(a)DENTURESsussex.ac.uk wrote:
>> Thus spake Mrcheerful (nbk...(a)hotmail.co.uk) unto the assembled
>> multitudes:
>>
>>> some vauxhalls can have the ecu reprogrammed to remove the egr from
>>> the program, unfortunately this only applies to certain models/ecu
>>> types. the egr sometimes just gets a bit of coke stuck in it, which
>>> is enough to ruin the idle, sometimes it comes out on its own.
>>> having the egr working or not does not seem to effect the mot
>>> emissions afaik.
>>
>> Certainly before my GF's car was 'fixed', the engine sounded like a
>> diesel when it was idling, and acceleration was uneven and poor.
>>
>> --
>> Andy Clews
>> University of Sussex
>> *** Remove DENTURES if replying by email ***
>
> Took to garage, with EML on. The analyser read 'coil pack fault', and
> no other faults.
> Fitter replaced spark plugs with new ones, and fault gone, EML out and
> running well again.
> Car was OK on way home, and tested it again this morning. OK for
> about 20 miles, then when hot, EML on again, and running rough. So,
> I reckon a new coil-pack needed. About �100 I think.
>
> I find it a bit odd, that the fault went with new plugs at garage,
> when the engine was hot at the time. There does seem some
> inconsistency here. Does make me wonder if its a bad connection but
> that would surely be same when cold or hot engine?

there is a known fault with the connector to the coolant sensor, vauxhall
make a kit of bits with gold plated connectors to cure it. there was also a
problem with a bad earth on the ecm. but my money is still on a crank
sensor. and crank sensor did not show up on the fault codes on a diesel
vectra I did the other day, yet the sensor had no connection through it at
all ! and replacing it cured the problems: rough idle, low performance and
no rev counter.


From: 4square on 13 Jun 2010 10:32
On Jun 13, 1:17 pm, "Mrcheerful" <nbk...(a)hotmail.co.uk> wrote:
> 4square wrote:
> > On Jun 13, 10:49 am, A.Cl...(a)DENTURESsussex.ac.uk wrote:
> >> Thus spake Mrcheerful (nbk...(a)hotmail.co.uk) unto the assembled
> >> multitudes:
>
> >>> some vauxhalls can have the ecu reprogrammed to remove the egr from
> >>> the program, unfortunately this only applies to certain models/ecu
> >>> types. the egr sometimes just gets a bit of coke stuck in it, which
> >>> is enough to ruin the idle, sometimes it comes out on its own.
> >>> having the egr working or not does not seem to effect the mot
> >>> emissions afaik.
>
> >> Certainly before my GF's car was 'fixed', the engine sounded like a
> >> diesel when it was idling, and acceleration was uneven and poor.
>
> >> --
> >> Andy Clews
> >> University of Sussex
> >> *** Remove DENTURES if replying by email ***
>
> > Took to garage, with EML on. The analyser read 'coil pack fault', and
> > no other faults.
> > Fitter replaced spark plugs with new ones, and fault gone, EML out and
> > running well again.
> > Car was OK on way home,  and tested it again this morning. OK for
> > about 20 miles, then when hot, EML on again, and running rough.  So,
> > I reckon a new coil-pack needed. About £100 I think.
>
> > I find it a bit odd, that the fault went with new plugs at garage,
> > when the engine was hot at the time. There does seem some
> > inconsistency here. Does make me wonder if its a bad connection  but
> > that would surely be same when cold or hot engine?
>
> there is a known fault with the connector to the coolant sensor, vauxhall
> make a kit of bits with gold plated connectors to cure it.  there was also a
> problem with a bad earth on the ecm.  but my money is still on a crank
> sensor.  and crank sensor did not show up on the fault codes on a diesel
> vectra I did the other day, yet the sensor had no connection through it at
> all ! and replacing it cured the problems: rough idle, low performance and
> no rev counter.- Hide quoted text -
>
> - Show quoted text -

This is getting complicated! Where is the coolant sensor please? And
what does ecm stand for?
Gold-plated connectors sounds a bit extreme, these are only cars!!
My rev-counter is working.
First  |  Prev  |  Next  |  Last
Pages: 1 2 3
Prev: Removing a polish smell
Next: Jaguar X-type 2005 2LTR Diesel