Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
10forcash wrote:
Don't forget that if there is an EGR DTC stored the ECM will drop the engine power whether or not the EGR's are blanked off, just blanking off a jammed EGR will not restore the 'lost' power.....
This it true.
15th May 2008 3:00 pm
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
al cope wrote:
bit of mixed question Wex. When mine were playing up, they were sticking wide open, resulting in a loss of power due to them dumping all the exhaust crap back in, all the time, so fitting blanking plates would cure this. On 07 models, this would also result in a fault warning light coming on, something 06 and previous years models dont do (although fault codes would still be logged). I waited until I'd had both EGR valves replaced, and then blanked them off.
Al
Last night it happened again , well tbh I forced it to happen.Reason being is that on all occasions previously I imediately pulled in , switched off , switched her on and carried on my merry way.This time I continued on the hard shoulder.No matter how much I tried to accelerate , nothing happened.It gradually slowed itself down .As it did this I moved down through the gears aswell.Eventually I reached 3 rd and then quickly dropped it into 2 nd.Immediately the engine bit back into life again and I was on my way again, can't say whether I had full power , felt like it did.Special programs weren't functioning ( Terrain Response , Cruise Control) , .
Im on my way into my dealers in a minute and Im going to take the service manager out to recreate it on the road again.Ill let you all know what the outcome/diagnosis is.But TFC may be right the valve may be shagged but becaused theres no gases entering anymore eventuially the engine cops this and restores full power.The DTC is more then likely the cause of the Programs failure , ie no cruise , no terrain response.
Cheers , D
16th May 2008 8:44 am
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10299
yours sounds different, as mine wasn't going into a "limp home" mode, just no power due to no clean air.
AlVolvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
16th May 2008 9:01 am
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Sorry Al , I wasn't specific bud.Don't think mine is going into limp home.I've never experienced limp home TBH on any occasion touch wood.
No , just a loss of power completely.The engine would gradually slow down to nothing.I just did it with the tech on the way back to the office . He asked me to stick it in neutral as the revs were receeding and rev " the bollix" out of it.Did this for a sec or two and stuck it back in gear and hey presto power back.Whilst I was at it I showed him the EGR blanks.He was impressed and hadn't seen it done on a D3 yet.Explained to him about the blanks and removing the butterfly shutter.Assured him that I didn't think that it was attributable to the fault Did notice though that when we took off the engine cover that there was a little gunk around one of the joints/circular clips where the S/S ( ?) EGR pipe is joined to the air intake manifold.I musn't have fixed it properly.Maybe this is part of the fault ?
16th May 2008 9:44 am
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10299
OK, that does sound like mine, completely no power, for me, being a manual, I dropped the clutch, rev it until reving clean, and away we went. This was all before fitting blanking plates. I didnt get any other faults at the same time, no warning lights, no loss of any other programs (though as it happens quickly, I'd not tried them). Fixed by replacing both EGR valves - then I blanked them off.
AlVolvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
16th May 2008 10:16 am
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Al
Will post results later.
16th May 2008 10:18 am
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Quick conversation with the service manager.My head is all over the shop but initial diagnosis is two faults :
1st:EGR valve wide open excessive exhaust gas inflow
2 nd :Problems with turbo pressure solenoid ( or something like that)
I've asked about a printout with the technical jargon on it so's I can post for anyone that may need it .
Prognosis on the turbo issue is a replacement turbo , approx 8 - 10 hours labour , no thanks.Gut feeling it'll be ok once below is rectified.I hope I'm proved right.
EGR issue , I suggested myself replacing the two EGR valves.
They were a bit confused as to the workings of the blanking procedure.I assured them that it merely blanks the ingress of EG's at the closest point to the exhaust .The removal of the butterfly gate/valve was necessitated by the fact that if it wasn't removed the engine would try to suck in EG's and because they EGR system/inlet was now blanked it would starve the engine of air/oxygen.
16th May 2008 12:52 pm
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Quote:
EGR issue , I suggested myself replacing the two EGR valves.
I reconsidered this when I heard that it would cost approx 900 euro.
Collected it , faults cleared . A couple of tests on the way back to the office .No recurrence ..... yet.
Have been told today the problem with mine is the EGR valves, 08.5MY about 9500 miles and the EGRs are f d can't they make reliable valves
Just hope they can get it sorted for June, I'm booked to go to Tunisia I'm not as good as I once was........but I'm as good once as I ever was.
16th May 2008 7:02 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26705
The obvious thing that is noticable on the readout is that both egr's are consistent i.e the graphs are very similar so how can they determine that only one egr is wide open?
Turbo boost looks consistent, with just a couple of little blips. Fuel pressure is erm...... constant at 21.8mpa
What the hell all this really means is anyones guess.
If you get a repeat of the fault, then I would remove the blanks and restore the system to standard and get the faults cleared. If it subsequently repeats the errors then you know that at least it was not the blanks that caused it.
What I found interesting with mine is that it didn't play up once today, the only difference being the weather is cooler, a bit like the thermostat issue I'm not as good as I once was........but I'm as good once as I ever was.
16th May 2008 7:30 pm
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Cheers Gareth
Quote:
Fuel pressure is erm...... constant at 21.8mpa
That good or bad , 21.8 mpa I mean
No problems over the weekend , managed a few haul trips with fully laden trailer with no failures.I put it down to that loose clip on the EGR pipe.Saved myself a fair few grand by opting to run with it and " wait & see".
19th May 2008 10:56 am
heine
Member Since: 07 Feb 2007
Location: Midrand
Posts: 4054
Some Advice please guys
I was planning to do the blanking thingy this weekend . In light of the above do you think I should hold off a bit
Thanks
Heine
19th May 2008 11:00 am
Wex
Member Since: 16 Apr 2007
Location: Knackeragua
Posts: 5173
Heine , my problem was associated ( in my opinion) with the fact that I didn't reconnect one of the clips on one of the pipes correctly.
My dealer wasn't able to give a definitive diagnosis as because the EGR's were blanked , the resultant readings were not within the parameters that the IDS was designed within or could give a diagnosis on .I hope that makes sense.In otherwords as the software or equipment was only designed to read information on vehicles that weren't EGRblanked.Maybe this is Bull.
I'll try and post a pic of the clip in question.
Hand on heart I'd say go ahead with it.Since I got it back ( with the clip properly fixed) the D3 feels alot better.
Edit to add pic ( courtesy of JM ) The one ( of two) circled was loose with some gunk evident around the joint and protective sheathing.
Last edited by Wex on 19th May 2008 11:23 am. Edited 1 time in total
19th May 2008 11:10 am
heine
Member Since: 07 Feb 2007
Location: Midrand
Posts: 4054
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
Did notice though that when we took off the engine cover that there was a little gunk around one of the joints/circular clips where the S/S ( ?) EGR pipe is joined to the air intake manifold.I musn't have fixed it properly.Maybe this is part of the fault ? 
d 
can't they make reliable valves 
That good or bad , 21.8 mpa I mean 
