Disco 2 Discovery 2 intermittent starting and cutting out

BazzaRich · Nov 1, 2020

Afternoon all,

new to the forum and looking for some pointers to a problem with the disco.

2004 TD5 was running great and then one morning it was turning and took about 5 mins to start.
Once started it would run fine and then it would just cut out, this could be 10 minutes / 20 minutes or not at all. Again I would have to go through the priming / purge presses and turn it over till it started again.

my thought is it is getting air in some where but it is very random as now and again it will start on the button.

so far I have put a new Fuel pump, Fuels filter and CPS on and it is still the same.
No fuel leaking and I can’t see any bubbling round the injectors or anywhere else.

many pointers would be much appreciated

Baz

Stanleysteamer · Nov 1, 2020

I take it you have checked those pesky battery terminals?

sierrafery · Nov 1, 2020

Hi, to plug in a diagnostic tool and see if there are fault codes stored would be a good start as to avoid a guessing game cos if you have a tospide switch fault code any other troubleshooting is feckless... or if you changed the CPS based on a fault code and still the same it's wiring is a common fault as well, you can attempt to replace the injector copper washers ''in blind'' if no diagnostics availabe also swap relays R1(fuel pump) with R3(headlamp wash) and R9(main) with R8(HFS) to rule out the relays

what about oil in the ECU red plug ?

BazzaRich · Nov 1, 2020

Stanleysteamer said:
I take it you have checked those pesky battery terminals?

ye all terminals, fuses and relays.
When It cuts out it turns over fine straight away but will take up to 5 minutes on and off to start again.

baz

BazzaRich · Nov 1, 2020

sierrafery said:
Hi, to plug in a diagnostic tool and see if there are fault codes stored would be a good start as to avoid a guessing game cos if you have a tospide switch fault code any other troubleshooting is feckless... or if you changed the CPS based on a fault code and still the same it's wiring is a common fault as well, you can attempt to replace the injector copper washers ''in blind'' if no diagnostics availabe also swap relays R1(fuel pump) with R3(headlamp wash) and R9(main) with R8(HFS) to rule out the relays

what about oil in the ECU red plug ?

Sorry forgot to say, plugged in and no codes.
very slight bit of oil in the corner of the red plug.
swapped the head light wash and fuel pump relay.

I have washers and seals for the injectors as that looks like possibly the next job.

baz

sierrafery · Nov 1, 2020

Yes, if no codes it's most probably a fuelling issue cos it's not covered by diagnostics

BazzaRich · Nov 1, 2020

sierrafery said:
Yes, if no codes it's most probably a fuelling issue cos it's not covered by diagnostics

just at a loss at the moment, I thought if it was drawing air in it would be all the time, it’s like it flicks a switch, normally on a bloody roundabout or a main road lol.

Stanleysteamer · Nov 1, 2020

BazzaRich said:
just at a loss at the moment, I thought if it was drawing air in it would be all the time, it’s like it flicks a switch, normally on a bloody roundabout or a main road lol.

If it is as intermittent as that, it sounds to me like either an electrical problem, i.e. a circuit making -breaking-making, i.e.e a broken wire or one earthing through dodgy insulation.
OR a problem with a pipe with a small split opening and closing as the engine moves slightly under acceleration/deceleration or in turns.
Does it go away if you drive really smoothly?

sierrafery · Nov 1, 2020

BazzaRich said:
just at a loss at the moment, I thought if it was drawing air in it would be all the time,..

the Td5 can't draw air into the fuelling system while it's running cos it's under permannent pressure so if there's a leak it would let fuel out not air in. That intermittent behaviour looks very like a wiring issue but it should have triggered some fault codes then unless it's on the CPS circuit which is a bit cheap with codes

Feathers McGraw · Nov 2, 2020

Sorry I cannot help with the problem but would just like to say that looks a very handy setup you have there!

BazzaRich · Nov 2, 2020

Feathers McGraw said:
Sorry I cannot help with the problem but would just like to say that looks a very handy setup you have there!

cheers, ye kids in the back of the car and me and our lass up top, that was a trial run but works well.

BazzaRich · Nov 2, 2020

Initially I was drawn to electrical, but when it cuts out non of the electrics go and as soon as you stop and turn the key the fuel pump is going.
It does it at any speed and any RPM wether smooth or not.

Baz.

BazzaRich · Nov 12, 2020

So injector seals and washers changed and still no difference.

neilly · Nov 12, 2020

jonathon david said:
Good Afternoon,
For any sort of inquiry related to your Range Rover/Land Rover

Hello , is this SPAM?

Cheers

Turboman · Nov 12, 2020

jonathon david said:
Good Afternoon,
For any sort of inquiry related to your Range Rover/Land Rover simply call and spend a lot of money now.

Nice try, sunshine. But it has been reported.

neilly · Nov 12, 2020

Turboman said:
Nice try, sunshine. But it has been reported.

haha, you are aware that you have just reposted his spam....including number..

Cheers

Turboman · Nov 12, 2020

neilly said:
haha, you are aware that you have just reposted his spam....including number..

Cheers

Now edited it. Been having a look at his premises on the net. Shed in Barking, lot of Pimpwagons on ramps.

PopPops · Nov 12, 2020

BazzaRich said:
So injector seals and washers changed and still no difference.

Probably wouldn't have expected a cure from the symptoms.

I don't know what diagnostics you have, but can you record live data, Inputs Fuelling? A recording of what is happening before and as it cuts out may provide a clue. Even if everything looks perfect, that is also a clue!

PP.

sierrafery · Nov 12, 2020

I'm affraid that this is caused by a bad contact somewhere which is a nightmare to diagnose.

BazzaRich · Nov 17, 2020

All sorted, so took the rocker cover back off and injectors out, oil all over.

new seals and washers again, change of oil and filter and now running spot on.

seems the first lot of seals fitted seem to have been no good and actually worse than the originals or nicked when been put in I have no idea lol.

Disco 2 Discovery 2 intermittent starting and cutting out

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