Extreme fuel pump

[Dave Gell]

Hi can anyone give me some guidance . Just tried to start my Extreme and the electric fuel pump sounded very slow and reluctant. I then started to get a slight burning smell. I am sure the pump has seized and bunt out. I have removed the o/s/r wheel and can only just see the pump on top of the tank. Is there an easy way of getting to this?

[Chris Young]

you've just gotta take the rear grp section off.. It isn't that hard as long as you can undo the wiring easily.  on both of mine I've had there are two bolts in the boot and then two at the bottom of the wheel arches. then the tub will lift off.. (frustratinlgly it will break any sealing done round the top by the roll bar.)

my fuel pumps have been mounted behind the pass seat or opposite on the boot.

hope this helps somehow even tho it is frustrating news!

On 22 October 2014 13:34, Dave Gell <viag...@btinternet.com> wrote:

Hi can anyone give me some guidance . Just tried to start my Extreme and the electric fuel pump sounded very slow and reluctant. I then started to get a slight burning smell. I am sure the pump has seized and bunt out. I have removed the o/s/r wheel and can only just see the pump on top of the tank. Is there an easy way of getting to this?

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[Dave Gell]

I've been in touch with QMC this afternoon who suggested neatly cutting a small access in the upper boot inner wall and replacing with an access panel cover after poss stainless? He did say this area was not a load or stress area? What's your thoughts on this.

[Nigel Plant]

As chris says, take the rear tub off, it seems a big job, but is actually quite easy. When you put a new one on, put it on the bulkhead behind the passenger seat, per Chris above, ghen you can easily access with just taking the rear NS wheel off.

Is your car injection or carb? Mine is injection and the tank outlet is on the tank bottom, so am a little puzzled why the pump is on top, unless this is how earlier ones were plumbed with carbs and low pressure pump.

Note also when removing the tub, you will likely have to remove harnesses at the top, where they attach throigh the tub and also there maybe two self tappers behind the seats holding the tub panel against frame. There are also two fasteners at the front botyom of the wheel arch, to stop it flapping around.

Nigel

[Chris Young]

whilst it is all off,  (both mine have the fuel take off and return at the top) make sure your rubber fuel pipes are e10 fuel ok.

http://www.locostbuilders.co.uk/forum/9/viewthread.php?tid=153126

has the detail..

[Jim Hearne]

Hi Chris,

Very interesting link, I’d not realised that the newer petrol was that much of a problem.

 

Jim

 

 

 

From: Chris Young

Sent: Thursday, October 23, 2014 8:45 AM

To: quantumowners

Subject: Re: [Quantum Owners] Extreme fuel pump

 

whilst it is all off,  (both mine have the fuel take off and return at the top) make sure your rubber fuel pipes are e10 fuel ok.

 

http://www.locostbuilders.co.uk/forum/9/viewthread.php?tid=153126

 

has the detail..

 

 

 

 

On 23 October 2014 05:07, Nigel Plant <nige...@gmail.com> wrote:

As chris says,  take the rear tub off, it seems a big job, but is actually quite easy. When you put a new one on, put it on the bulkhead behind the passenger seat, per Chris above, ghen you can easily access with just taking the rear NS wheel off.

Is your car injection or carb? Mine is injection and the tank outlet is on the tank bottom, so am a little puzzled why the pump is on top, unless this is how earlier ones were plumbed with carbs and low pressure pump.

Note also when removing the tub, you will likely have to remove harnesses at the top, where they attach throigh the tub and also there maybe two self tappers behind the seats holding the tub panel against frame. There are also two fasteners at the front botyom of the wheel arch, to stop it flapping around.

Nigel

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[Dave Gell]

Mine an injection. The fuel pump in on the top of the tank inside what looks like a metal cage/ mounting? Today I cut into the wires that go up to the pump as i cant even reach these at the pump itself. No voltage at the supply. I connected direct to a spare battery and the pump spins like a good un. Engine started so not the pump now but power supply. I now need to trace back, poss a relay or wire fault?

[Nigel Plant]

There will be a relay near the fusebox which is usually located under the scuttle on passenger side, check that and the fuse. Good luck.
Nigel

[Chris Young]

have you got the xtreme manual ? it contains the factory supplied wiring diagram. (although I don't recall a relay as it is written for carb.)

On 23 October 2014 23:11, Nigel Plant <nige...@gmail.com> wrote:

There will be a relay near the fusebox which is usually located under the scuttle on passenger side, check that and the fuse. Good luck.
Nigel

[nige...@gmail.com]

The zetec with injection had an addendum to the manual, showing the fuel pump wiring.
Nigel

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[Dave Gell]

Yes I have the build manual but there is no ref to fuel pump relay. It does mention fuel pump wiring on the rear connection section but the colours are not the same? Man says white/purple and black earth. Wires to my pump are brown and black/red? There is no amendment page in my manual?

[Nigel Plant]

Ok. Will check mine later, I was going ny memory. What engine management is it? Something isnt sounding correct here.
Nigel

On 26 Oct 2014 21:10, "Dave Gell" <viag...@btinternet.com> wrote:

Yes I have the build manual but there is no ref to fuel pump relay. It does mention fuel pump wiring on the rear connection section but the colours are not the same? Man says white/purple and black earth. Wires to my pump are brown and black/red? There is no amendment page in my manual?

[Nigel Plant]

Haven't been able to check the car yet but have checked the Zetec build manual and Omex wiri8ng diagram.

Connector pin 3 (blue wire) of the Omex 500 is an aux used for a relay powering the fuel pump, coil pack, injectors and lambda.  There is a wiring diagram for this in the Zetc/ Omex supplement.  Can scan and send if you wish.

 

On a separate note, I see your e mail address 'via gelia'  this was the local name given to the road from Newhaven to Cromford, near where I grew up in Buxton.  Is there a connection!

Nigel

 

[Dave Gell]

Yes mine running the Omex 500. My name is Gell the family connected with the area around the viagellia road and Carsington Village etc. Hopton Hall belonged to the Gell family Yawn Yawn? I could go on.If you could scan that diagram it would help thanks (viag...@btinternet.com)
Dave

[Jim Hearne]

Brown (Earth) and Black/Red (Supply) are Fords standard wire colours for the
fuel pump on a donor Sierra.
Maybe somebody used the Ford fuel pump connector and some of the wiring for
the fuel pump.

Jim

[Nigel Plant]

Bit of a cock up. Took manual to work, forgot to bring it home and am not planning to be at work tomorrow. I may swing by, but if not will be wednesday. Tbh if you google omex 500 wiring diagram, there are loads, the main difference being the source of the main feed.

You stil live in Derbys?

Nigel

[Dave Gell]

Thanks I did a google search and have found a diagram. Gonna check sometime tommoz, hope it hasnt fried the ecu? No i live on the borders NG16 Selston but make Derbys my second home.
Dave

[Dave Gell]

Bingo?
 Found two additional relays (with integral fuse ?) never seen these type before, tucked up way out of sight above the heater vent piping. One with a very doggy fuse that had been getting hot for some time with the looks of it. replaced complete relay with same type and new fuse hey presto running again. Shame its raining now don't want to get my car wet. Boy is it tough lying upside down with yer head in the foot well?  Thanks to all for your interest, idea's and info,

Dave

On Wednesday, 22 October 2014 13:34:09 UTC+1, Dave Gell wrote:

[Chris Young]

I do love working down in the foot well upside down, feet hanging over the roll bar too :) got a load of time to spend down there soon as I get closer to wiring up my megasquirt ..

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[Nigel Plant]

Well done, swung by work today to get manual, but guess its not needed now. Pleased you solved it.
Nigel

[jon jackson]

Aha getting down there is not so bad, working is difficult, but getting out is almost impossible and I am past 60 and sometimes wonder why I still tinker until I see the faces of some folk driving boring old euro boxes and suddenly I am sure I will die a petrolhead.

----- Original Message -----

From: Chris Young

To: quantumowners

Sent: Tuesday, October 28, 2014 8:18 PM

Subject: Re: [Quantum Owners] Re: Extreme fuel pump

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