Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204
The PC Prog has a prime function, try this a few times.
This keeps the glow plug active for quite a while, the idear being if the glow plug has 'gunked' up the prime function should burn off the gunk.
A lot of smoke may be produced when this function is used.
If when you use this function hardly any smoke is produced you have either no/low fuel flow or the glow plug is not able to get hot enough.
Ian
PS remember that the fuel pump is run via PWM and putting 12v across it could damage it...so what can I fiddle with today that ain't broken ...?
21st Feb 2012 10:37 am
Mr flibble
Member Since: 13 May 2008
Location: Droitwich
Posts: 36
Fuel is there, as I get heat, but it just wont continue to a full burn, only a startup burn.
If I prime the fuel pump for 10 seconds, then run a cycle, I get an almighty amount of smoke, as it burns off.
How much fuel should come through if I set it to 4Hz? I get a steady stream, but no jets of fuel. does this seem right amount? This is If i take the pipe off from the FBH.
21st Feb 2012 5:27 pm
Mr flibble
Member Since: 13 May 2008
Location: Droitwich
Posts: 36
I have run the glowplug on its own for 100% duty for 60 seconds a couple of times. the flame detector shows a reading of 1.11 ohms when it gets to its maximum.
In fact, I am just running a long burn on it now, and am still getting smoke coming out of the air intake after 3 mins.
Just now going to run another burn cycle to see if that helps.
21st Feb 2012 5:48 pm
Mr flibble
Member Since: 13 May 2008
Location: Droitwich
Posts: 36
No, still no go.
As the fuel pump ramps up its delivery to nearly its maximum, 4.5hz, the FD light lights up ( the red one) then the flame detector ohms climb up to 0.92 ohms and it shuts down.
Am I thinking that the flame detector ohms need to lower as the unit goes into full burn, cos that is what is not happening. As the unit gets hotter, the ohms go up , but then it shuts down.
WTF is going on??
21st Feb 2012 5:53 pm
mike23118
Member Since: 01 Oct 2010
Location: North Wales
Posts: 1028
After clearing blockage on mine , it was just a steady dribble not a squirt.
early on in this tread someone took pic's of the program and what reading there should be have a flick through Now Renault Trafic
D4 gone
D3 gone
21st Feb 2012 6:47 pm
mike23118
Member Since: 01 Oct 2010
Location: North Wales
Posts: 1028
look at page 8Now Renault Trafic
D4 gone
D3 gone
21st Feb 2012 6:49 pm
Mr flibble
Member Since: 13 May 2008
Location: Droitwich
Posts: 36
Yeah, looked at that, which is why I flummuxed as to what readings I'm getting from the flame detector.
It starts the glow plug to get a reading of 0.9 ohms, then fires the fuel pump at about 1.75 hz for a bit, then the FD reading goes to about 0.86ohms, but then as the pump put more fuel in and the combustion fan increases, the FD ohms increase up to 0.92-0.95. all the while, the glow plug is on at about 50%.
Then the Glow plug switches off, ( this is where it determines if everything is ok with the burn, I guess )and it immediately shuts the fuel off and goes into FD cooling mode.( I reckon, because the FD reading is too high at that point and it thinks something is wrong.)
If the FD reading too high, cos its still full of C P, or is there not enough fuel/air getting in, which means the chamber isnt hot enough for it to carry on?
BTW, Why, when the FD cools, does the reading then go down? surely the reading cant go down when the chamber is in full burn, but also go down when everything is shutting down and its now cooling the FD.
21st Feb 2012 7:08 pm
mike23118
Member Since: 01 Oct 2010
Location: North Wales
Posts: 1028
Read somewhere that if you blow down the intake on start up it will fire up and keep going.
Other than that make sure all faults are clear'd before each try
I am now out of suggestions
Drop wiggs and IannP a pmNow Renault Trafic
D4 gone
D3 gone
21st Feb 2012 8:26 pm
ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
Click image to enlarge
Can anyone tell me where I can get these OBD plugs and pins from please as I'm trying to make on of these set ups but can't find OBD pins/sockets.
Thanks Tony
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29th Sep 2012 3:34 pm
marco 110
Member Since: 15 Nov 2009
Location: SALLES 33
Posts: 1014
Hi
@ruggedpeak :
I used small flat pods female, smallest size!
Need your help guys !
I need to test, can someone give me the original values ​​of the CO2 calibration?
My FHB only works at low altitude! At home (1000M altitude) it is cut, and no flame detector!
I tested all the components with the program, everything is ok, but it will not start here, but I can make it work down! ?. I made several rounds of combustion completes for 30 minutes, several times!
Please.Marco.
-D4 sdv6 HSE 2012 , high beam assist , surround cam, tv , and a lot of nice stuff..
Member Since: 17 Aug 2009
Location: Lancashire, Chorley ..ish
Posts: 204
ruggedpeak wrote:
Click image to enlarge
Can anyone tell me where I can get these OBD plugs and pins from please as I'm trying to make on of these set ups but can't find OBD pins/sockets.
Thanks
The ODB is on the end of the USB interface.
The little pins that fit the ODB can be bought from Maplins or CPC - just make sure that you cover them with heat shrink sleeving then they don't short out.
If you are still strugging I will dig out the part number for you.
Ian..so what can I fiddle with today that ain't broken ...?
1st Oct 2012 10:28 am
ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
Thanks - I'll pop in and see if I can find something Tony
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1st Oct 2012 12:45 pm
ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
Help please
UPDATE - been suggested the order that the USB OBD thingy is connected to the laptop affects things. Tried all sorts of combos and FBH will not reply. OBD is working as it works fine in main car OBD connection.
I'm only unplugging the 8 pin FBH plug on the top right of the FBH - is this correct or should all 3 be unplugged?
Also I've assumed the "LR FBH Loom" is the unplugged plug above, and connecting hole 5 to pin 5 on the FBH? Is that right?
Thanks.
Right, technical genius that I am I can't get this set up to work!
Have set up wires correctly (excluding CAN bus wires in the wiring diagram), Webasto software is operating, have set it to the correct COM port, and selected W Bus as the type (my FBH is Thermo Top V). OBD2 USB thingy has red light on showing its attached to laptop, then when Diagnosis is started a green light next to it flashes but no other lights come on.
"WTT Initialisation" bar does not move/grow so I am guessing the OBD2 is working but for some reason the FBH is not talking
The only wires connected to the FBH are 1 from the OBD2 thingy, and one from hole 5 on the FBH connector to the corresponding plug. ON this hole 5 I just put some strands of the wire into the hole - I don't know what is inside the connector but wondered if its not connecting?
Any help appreciated!Tony
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7th Oct 2012 10:11 am
marco 110
Member Since: 15 Nov 2009
Location: SALLES 33
Posts: 1014
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
P, or is there not enough fuel/air getting in, which means the chamber isnt hot enough for it to carry on?
I can't get this 
