Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
EGR blanking post 2007.
I have posted on here a few times about issues with my 2007 Commercial but here's a brief summary.
I bought it 2 years ago, it lacked power at low revs, which was an utter pain, as I bought it for towing. I replaced the MAF and the MAP sensor, checked the wiring to the MAF, checked all hose connections and checked live data readings, all to no avail. I have just fitted a turbo but it's still not right.
Now, when I bought it, the EGRs were already blanked and there is no EML light on. However, as I don't know how the EML was mapped out, is it possible that the EGR faults could still be causing a lack of power at low revs. I do get EGR faults when reading the codes but I was ignoring them as I thought they were irrelevant but maybe not?
22nd Jan 2023 12:00 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4405
If the EGR's are blanked, has the butterfly been removed?Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
22nd Jan 2023 12:42 pm
CDS Site Sponsor
Member Since: 12 Oct 2009
Location: All over the UK!
Posts: 3324
The only real way to tell if they’ve been mapped out is to get the ECU info looked at properly.
There are some Euro4 D3’s out there with old engine ECU software that can run with blanked EGR’s not mapped out and not put the EML on.
My own MY08 would run without them mapped out with no issues until half way through France and then it’d pop up, I’ve since updated the engine ECU software and mapped them out and no longer an issue
Discovery 3/4 & RRS keys cut and programmed at your home or work
Apple CarPlay/ Android Auto retro fit - see it here
BAS Remaps/ EGR Blanking
Software updates/ enabling
Mobile Servicing & Repairs
22nd Jan 2023 1:27 pm
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
rrhool wrote:
If the EGR's are blanked, has the butterfly been removed?
It hadn't been removed, so I took it out about a year ago. It made sod all difference.
22nd Jan 2023 1:52 pm
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
CDS wrote:
The only real way to tell if they’ve been mapped out is to get the ECU info looked at properly.
There are some Euro4 D3’s out there with old engine ECU software that can run with blanked EGR’s not mapped out and not put the EML on.
My own MY08 would run without them mapped out with no issues until half way through France and then it’d pop up, I’ve since updated the engine ECU software and mapped them out and no longer an issue
Did it cause running issues when the fault popped up?
22nd Jan 2023 1:56 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Re: EGR blanking post 2007.
GDM wrote:
I have posted on here a few times about issues with my 2007 Commercial but here's a brief summary.
I bought it 2 years ago, it lacked power at low revs, which was an utter pain, as I bought it for towing. I replaced the MAF and the MAP sensor, checked the wiring to the MAF, checked all hose connections and checked live data readings, all to no avail. I have just fitted a turbo but it's still not right.
Now, when I bought it, the EGRs were already blanked and there is no EML light on. However, as I don't know how the EML was mapped out, is it possible that the EGR faults could still be causing a lack of power at low revs. I do get EGR faults when reading the codes but I was ignoring them as I thought they were irrelevant but maybe not?
Oh mate really am sorry to hear that after all the hard work
Apologises if I already asked but have u removed the throttle body, blanked it off , added some air and then bubble tested the egr pipe connections plse , are ur blanks fitted on the engine block , have they also been tested with soapy water plse
Plus daft idea but does it make any difference when u select heat or cool on the dials as wonder if maybe the ac compressor is seized of if that could ever affect the engine ??
Did u also check the earths posts behind the passengers side front wheel arch liner as know the ECM uses them for the 5 Vdc reference grounds , also found the ECM pins were green giving me bad connections
Lastly do u get any readings from the following plse
Boost Pressure Actuator
Fuel Rail Pressure Sensor
Supplementary engine coolant temperature, does it read minus or positive plse
Boost pressure actuator - Bank 1
Apologises once again if you’ve tried these as indeed just trying to think of everything I also done when I had very similar problems
Really hope u find it
22nd Jan 2023 2:18 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Almost forgot , I also tested virtually every sensor to ensure it had approx 5 Vdc supply to each connector
Got fingers crossed for u
22nd Jan 2023 2:26 pm
CDS Site Sponsor
Member Since: 12 Oct 2009
Location: All over the UK!
Posts: 3324
GDM wrote:
CDS wrote:
The only real way to tell if they’ve been mapped out is to get the ECU info looked at properly.
There are some Euro4 D3’s out there with old engine ECU software that can run with blanked EGR’s not mapped out and not put the EML on.
My own MY08 would run without them mapped out with no issues until half way through France and then it’d pop up, I’ve since updated the engine ECU software and mapped them out and no longer an issue
Did it cause running issues when the fault popped up?
No, just the EML on
Discovery 3/4 & RRS keys cut and programmed at your home or work
Apple CarPlay/ Android Auto retro fit - see it here
BAS Remaps/ EGR Blanking
Software updates/ enabling
Mobile Servicing & Repairs
22nd Jan 2023 2:54 pm
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Re: EGR blanking post 2007.
gstuart wrote:
Oh mate really am sorry to hear that after all the hard work
Apologises if I already asked but have u removed the throttle body, blanked it off , added some air and then bubble tested the egr pipe connections plse , are ur blanks fitted on the engine block , have they also been tested with soapy water plse
Plus daft idea but does it make any difference when u select heat or cool on the dials as wonder if maybe the ac compressor is seized of if that could ever affect the engine ??
Did u also check the earths posts behind the passengers side front wheel arch liner as know the ECM uses them for the 5 Vdc reference grounds , also found the ECM pins were green giving me bad connections
Lastly do u get any readings from the following plse
Boost Pressure Actuator
Fuel Rail Pressure Sensor
Supplementary engine coolant temperature, does it read minus or positive plse
Boost pressure actuator - Bank 1
Apologises once again if you’ve tried these as indeed just trying to think of everything I also done when I had very similar problems
Really hope u find it
Well, the turbo bearings were shot anyway, so that had to be changed and the clutch and DMF needed doing too. I had hoped that the VNT mechanism might have been at fault on the old turbo.
I haven't removed the throttle body and air tested it. I did smoke test the inlet system but it wasn't pressurised at all. The EGR valves have been completely removed, so I have blanks on the exhaust manifolds and the throttle body.
There is no difference with the A/C compressor.
I did check the ECM pins some time ago but I haven't checked the earth point in the wheel arch, so I will do that.
I can't remember what live data I recorded before but I will check on the ones you mentioned.
Like you did, I do have at least one sticking brake caliper but I think this is a recent thing and probably not the reason it has always been sluggish. I have all new calipers, pads, V8 discs and caliper carriers waiting to go on this week.
And thank you for your help and advice.
22nd Jan 2023 7:54 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Hi
Ur so welcome and always nice being able to pass on things that might be useful to u
Funny enough when I tested the 5vdc supply I think was to the map sensor it was lower around 2-3 Vdc , after I done that earth post connections it came back up to 5vdc which helped on the rev range
Fingers crossed and indeed plse let us know how u get on along with what live data u get
Did also wonder that with mine ref the calipers sticking which I found the discs were hotter than the others after a drive , great as that will cure any problems seeing u have all u calipers etc
Also just remembered I fitted all new seals on the throttle body Y piece , using some clear silicone grease which helped prevent the o rings from pushing in, then after with the engine running , bubble tested them with some soapy water to ensure the seal wasn’t letting by ,
Ref the egrs, I just blanked mine leaving the pipes and egrs in place , blank is at the engine block , done that because of the new mot rules with regards to egrs , leaving it all in place they wouldn’t notice they had been blanked
Really hope after all ur hard work it gets resolved
23rd Jan 2023 4:10 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Also sorry if you’ve already done this regarding the canbus, this is what I also done , here are the tests I performed to ensure the canbus was ok , indeed through the book at it, lol , wished to share it just in case it’s useful
With both battery leads disconnected from the battery posts
Multimeter set to ohms, ( TP Is just short for test probe from ur multimeter)
TP to pin 6 other TP to pin 14 , read ohms ( should read around 60 Ohms)
TP to pin 3 other TP to pin 11, read ohms ( should read around 60 Ohms)
Reconnect battery, ign off , meter set to Vdc
TP to pin 6 other TP pin 4 Read dc ( should be around 2.5 Vdc
TP to pin 6 other TP to pin 5 Read Vdc
TP to pin 14 other TP to pin 4 Read dc ( should be around 2.5 Vdc
TP to pin 14 other TP to pin 5 Read Vdc
TP to pin 6 other TP to pin 14 read Vdc
23rd Jan 2023 4:30 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Pin 1
Pin 2 - PWM positive
Pin 3 - medium canbus ( high side )
Pin 4 - chassis ground
Pin 5 - signal ground
Pin 6 - high canbus ( high side )
Pin 7 - Kline
Pin 8 - transmission module
Pin 9 - ABS module
Pin 10 - PWM Negative
Pin 11 - medium canbus ( low side )
Pin 12 - restraint control module
Pin 13
Pin 14 - high canbus (low side )
Pin 15
Pin 16 battery voltage
Click image to enlarge
23rd Jan 2023 4:32 am
GDM
Member Since: 18 Oct 2020
Location: Midhurst, West Sussex
Posts: 144
Thanks. Will be on the brakes tomorrow and Thursday evenings, then will start checking all of the other things you have mentioned. Got it back on the lift this evening and took the wheels off, and it looks like the n/s/f and o/s/r calipers are sticking on and the n/s/r is stuck off. The o/s/f looks like it might be good!
24th Jan 2023 10:52 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13672
Ur so welcome , Just really hope something assists in u finding the error
Also posted over on ur other thread as just wondered if a restricted intercooler could cause these sort if issues , clutching at straws and just a thought
Really hope u find what it is and can certainly sympathise when it comes to trying to pin down errors
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