807 dw10uted4 (RHK) - Cold Start Problems - Peugeot Forums
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Old 31-03-18, 10:23 AM   #1
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Default 807 dw10uted4 (RHK) - Cold Start Problems

(This is my 2nd attempt to post this, sorry if it turns up as a duplicate)

I've been having trouble starting the car from cold. When it does catch it is a bit smoky. Once it is running it is fine, no smoke and idles and runs fine. If the engine isnít cold it normally starts OK without smoking.. so Iím wondering if the smoke is just unburned diesel from all the time spent cranking.

Anyhow..
Because it was only when cold and no codes I got the glow plugs and relay changed.. which didnít resolve the issue. (no need to tell me this wonít work.) It was still a pig to start and the garage pointed out that there was a cam position sensor warning. Switching out the sensor didnít solve this.. I wondered if it was low cranking voltage causing the error.. a multimeter showed the voltage was pretty low when fighting to get it started. A new battery as got rid of the cam sensor warning, but it still doesnít want to start. (Diagbox seems to be reporting cam sync is fine too)
The garage werenít sure what the problem was and suggested going to an auto electrician.

Next garage was an independent Peugeot specialist. After messing around with the injectors and I believe checking the pumps they found an EGR blanking plate. From that theyíve told me they saw no EGR flow and zero DPF load.. leading them to think the core of the DPF has also been removed and a bad ECU remap done.

Iíve struggled to find a DPF to fit the dw10uted4 (RHK). Looking under the car and at the Peugeot service software I suspect it has never had a DPF. It looks like there are two cats, but no DPF. This has me questioning if the diagnosis is correct at all. So Iím not sure what to do now.

Questions and stuffÖ

1) Does anyone have access to service box? Could I PM you the numbers from the end of the VIN to confirm my suspicion about the lack of DPF / two cat configuration.

2) If the engine has no DPF.. Iím guessing a 0 DPF load is right? The second cat is more/less where the DPF would be. I canít see any pipes that look like the DPF sensor ones.

3) Am I right in thinking the EGR blanking would have required an ECU remap to stop it throwing warnings / errors?

The garage (and Diagbox) both seem to think that the EGR is operating correctly, so Iím not sure why it would have been blanked.. So Iím thinking of removing the blanking. I have no idea how long the blanking has been in place for.

More questions:

3) Can the blanking be removed (and EGR reinstated) before the ECU is reprogrammed to factory? Not sure what the implications of doing this would be. If I have the ECU done before the EGR blanking is removed Iím guessing itíll throw errors / limp.

4) If I am removing the blanking.. Iím expecting there will be a load of old crap in the EGR system. Should I be worried about this? I expect that chunks of crap being ingested by the engine would be a bad thing. I was thinking of removing the pipe and checking / cleaning it.. and removing the EGR to clean if it looks blocked (though it passes the Diagbox test). Will this be enough? From what I can tell there is a cooler below the EGR.. but it sounds like Iíd have to drain the coolant to remove / clean this.
5) How long does the engine need to run for before the injector correction values are valid?
Iíve got a bottle of BG244. Iím more than a little tempted to get the current correction values, then stick the BG244 in to see if it makes any different (to starting and the maybe the injector corrections).

Thatís all I can think of. Iíd be grateful for any ideas / suggestions. Iím in the Bradford / West Yorkshire area. I have access to Diagbox (but not the knowledge to interpret the data).
Thanks,
Dan
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Old 31-03-18, 11:52 AM   #2
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I can't tell you anything about all of your woes except, I have owned 3 807s all 2.2 hdi, registered in 2003, 2006 & 2008. None of them had DPFs.
From that, unless they added them in on later 807s, which I don't think they did, Yours shouldn't have had one fitted.

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Old 31-03-18, 12:08 PM   #3
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Some were fitted with DPF my old 807 2003 2.2 HDi had a DPF fitted, it was fitted underneath as a two part unit with CAT
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Old 31-03-18, 12:30 PM   #4
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I just googled it and you're right.. They are listed but I have never bought any fluid for any 807 and I did 224k in the 2006 one, 195k in the 2008 and 174k in the 2003.
I couldn't have been that lucky to not have them on all three surely!!?

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Old 31-03-18, 12:31 PM   #5
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Mine is a 2.0 which was registered in March 09. From what I've read a DPF became mandatory in 2009.. From what I've read other versions of the dw10 (ATED4/BTED4) had a DPF fitted.

On the ECP website if I type in my reg they'll point me at a DPF with the single bracket. I know for sure there isn't one of them under my car! Looking under the car and at pictures online.. where I'd expect to see the DPF, it looks a lot like a 1731LK Catalytic converter to me.
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Old 31-03-18, 02:07 PM   #6
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Post last 8 digits of VIN and we can check original spec etc
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Old 31-03-18, 02:32 PM   #7
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If it has been remapped that could be cause of poor cold starting. On some software versions if you change one of the map axis scale it causes cold start issues
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Old 31-03-18, 02:52 PM   #8
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The last digits are 13391246.
Thanks for the help.
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Old 31-03-18, 05:39 PM   #9
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Fuel supply-Engine
ENGINE DW10UTED4 TURBO DIESEL
DIESEL FILTER WATER DETECTOR WITHOUT DIESEL FILTER WATER DETECTOR
FUEL DIESEL FUEL
EMISSIONS STANDARD (ENGINE) ANTI DEPOLLUTION L5 (ENGINE)
EXHAUST TRANSVERSE REAR SILENCER
ENGINE (TYPE) EW/DW
CATALYTIC CONVERTER CATALYTIC CONVERTER 2 COMPOUNDS BEL 50PPM 40 GR
OIL COOLER MNTG WATER/OIL EXCHANGER ON ENGINE
VEHICLE EMISSIONS STANDARD (TYPE APPROVAL) L5 DEPOLLUTION (HOMOLOGATION)
CRANKCASE GAS CIRCUIT HEATING W/O HEATER CASING GAS CIRCUIT
VEHICLE TECHNICAL DEPOLLUTION L5 VEHICLE TECHNICAL DEPOLLUTION
PARTICLE FILTER WITHOUT PARTICLE FILTER
FAN 2 300W + 460W 3-SPEED FANS
FUEL VAPOUR RETRIEVAL WITHOUT PETROL VAPOUR RECUPERATION
INJECTION ASSOCIATED VARIANT SIEMENS ASSEMBLY
TANK FILTER RESERVOIR FILTER INTERIOR
THROTTLE HOUSING (ENGINE INLET AIR CIRCUIT) WITHOUT THROTTLE HOUSING (INTAKE AIR ENGINE)
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Old 31-03-18, 08:52 PM   #10
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Does digi box show crank / cam correlation (cam sync ) to be correct WHILST it’s cranking over ?
Does digi box have a ‘ injection commence ‘ tab in live data

What is rail pressure showing WHILST cranking ?

Does this have submerged pre pump in tank ....or squeezing ball under bonnet ?


Only trouble with getting some of these readings whilst cranking is that the ecm can dropout or get a bit fuzzy whilst cranking because of the electrical noise off the starter motor

Last edited by mechcanico; 31-03-18 at 08:59 PM.
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