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FBH dosing pump and wiring
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Yeah that’s what I mean, I run the pump on it’s own and I tried the prime cycle but nothing happened other than when I checked the fault codes I’d got over heat sensor spear

I’d cleared all faults prior to testing the fuel pump
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Post #188113919th Nov 2017 11:01 am
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Sly666
 


Member Since: 15 Dec 2014
Location: East Sussex
Posts: 443

United Kingdom 2013 Discovery 4 3.0 SDV6 XS Auto Fuji WhiteDiscovery 4

Arhh I see.
If the wire from fbh to pump is good then it sounds like a PCB fault on the fbh. 🤤
 
 
 
Post #188114219th Nov 2017 11:06 am
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Yeah we’re all thinking the same 😔
You don’t have one do you ??? Lol
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Post #188114419th Nov 2017 11:14 am
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

When you ran the FBH test did it make a clicking noise?

If it didn’t I would suspect the pump.

A good multimeter can display the PWM output of the FBH.
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Post #188133519th Nov 2017 8:01 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Robbie I run a test and the fuel pump didn’t click (it’s a new pump) I’ve checked the wire for continuity from the fbh plug to the pump and it’s ok



I’ve put 12v from batt positive to the white and blue wire at the fbh end tapping it to represent a pulse and it’s working the fuel pump

I’ve primed the pump with the software and it doesn’t work the pump

I’m starting to convince myself the pcb is knackered
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Post #188144420th Nov 2017 1:02 am
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Ahh, sorry - missed that bit. New pump, wiring checked and still not running does indeed suggest a bad FBH PCB.
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #188145820th Nov 2017 7:31 am
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Bit the bullet and ordered a FBH off flee bay comes tomorrow so will swop FBH this weekend and start bench testing original one
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Post #188188920th Nov 2017 11:01 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Also ordered new fuel pipe, rubber connectors and a couple of female banana connectors so I can connect diagnostics easily 👍🏻
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Post #188189220th Nov 2017 11:05 pm
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Disco dazboy
 


Member Since: 02 Dec 2013
Location: Leicestershire
Posts: 1575

United Kingdom 2008 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

I hope you have better luck than me! My fbh wouldn’t work would nearly fire up then stop! Investigations found no fuel getting through! That was last winter now 12 months on car develops a fuel leak at the top of the tank spotted by local indie so new pipes and fbh pump fitted leak cured but fbh still won’t fire up!next step was to swap fbh with one supposedly working brought of eBay! And still won’t work lots of smoke then I get fault e8 b1-d30! Not sure what to do next!
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Post #188189620th Nov 2017 11:11 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Shocked wow sounds like we’re in the same boat
Without a Censored paddle
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Post #188197721st Nov 2017 11:16 am
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Well, got home thinking great nice FBH has arrived and it had

Opened the box first thing I see 😳




MSG guy to let him know I’m not happy and I will try it the weekend see if it works fingers crossed 🤞
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Last edited by Dazz360 on 21st Nov 2017 7:59 pm. Edited 1 time in total 
Post #188215021st Nov 2017 7:39 pm
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Sly666
 


Member Since: 15 Dec 2014
Location: East Sussex
Posts: 443

United Kingdom 2013 Discovery 4 3.0 SDV6 XS Auto Fuji WhiteDiscovery 4

Errrr. The power connector looks like it's broken on your new one. I can see the PCB through the hole. 😠
 
 
 
Post #188215921st Nov 2017 7:57 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

The pins are there, think the monkeys that was tasked to remove it didn’t have enough brain cells to realise the plug has a catch to hold it in Whistle
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Post #188216021st Nov 2017 8:02 pm
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Sly666
 


Member Since: 15 Dec 2014
Location: East Sussex
Posts: 443

United Kingdom 2013 Discovery 4 3.0 SDV6 XS Auto Fuji WhiteDiscovery 4

Your have to pull it apart and swap the covers or condensation will get into the PCB.

(Or swap the PCB for your one and stick your faulty pcb in the broken fbh they had the cheek to send and return it Whistle )
 
 
 
Post #188216121st Nov 2017 8:05 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Midlands Walsall
Posts: 164

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Sly, I was in a good mood the whole idea was this one had a good pcb 🤬tards
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Post #188218221st Nov 2017 9:01 pm
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