[henny@canarias]

Hi Disco lovers... (I don't mean the musical type ). I own a Discovery 2, 4.6 V8 petrol. (Automatic). Recently I experienced 3 occasions where, while driving along normally, the engine cut out without warning. Immediately after cutting out, the warning lights on the dash came on. The first time I tried to restart, but the starter motor didn't even turn over. However after approx 40 mins while waiting for the recovery truck, I tried to start and the engine started at first turn of the key.
The second time I tried to restart and the starter motor turned over, but the engine wouldn't fire.
The third time was the same as the second time. The distances driven were shorter every time.
Does anyone have any suggestions???
Thanks.

 

[Stanleysteamer]

Hi Disco lovers... (I don't mean the musical type ). I own a Discovery 2, 4.6 V8 petrol. (Automatic). Recently I experienced 3 occasions where, while driving along normally, the engine cut out without warning. Immediately after cutting out, the warning lights on the dash came on. The first time I tried to restart, but the starter motor didn't even turn over. However after approx 40 mins while waiting for the recovery truck, I tried to start and the engine started at first turn of the key.
The second time I tried to restart and the starter motor turned over, but the engine wouldn't fire.
The third time was the same as the second time. The distances driven were shorter every time.
Does anyone have any suggestions???
Thanks.

Sounds fuel supply related to me, unless it is a dry joint in a circuit board somewhere.

 

[henny@canarias]

Thanks . That crossed my mind. It'll be investigated.

 

[sierrafery]

Hi. Read the fault code, i've seen such symptoms on V8s caused by the CPS or even by the MAF sensor, the code will reveal it

 

[marjon]

The second time I tried to restart and the starter motor turned over, but the engine wouldn't fire.
The third time was the same as the second time. The distances driven were shorter every time.
Does anyone have any suggestions???

The CPS is a single point failure, I also have had a MAF which starts then stalls straight away.

The first time I tried to restart, but the starter motor didn't even turn over.

This is a bit? neither of the failures above should stop cranking. but it then cooled and started (which is normal failing for a CPS after cooling). Maybe you have a couple of issues.

Do you have the GEMS or THOR engine? I would take a guess at THOR.

But you really needs some diagnostics on it to help.

J

 

[discool]

Not normal D2 V8 UK spec engine then.
Here in the U K we have a D2 with a Thor 3947 engine, which is so call by Land Rover a 4.0 litre D2, a different engine to D1 but the same CC as a D1 V8, which is called a 3.9.

So where in the World are you?

 

[marjon]

Not normal D2 V8 UK spec engine then.
Here in the U K we have a D2 with a Thor 3947 engine, which is so call by Land Rover a 4.0 litre D2, a different engine to D1 but the same CC as a D1 V8, which is called a 3.9.

So where in the World are you?

Believe 4.6 was export only, so quite rare. But basically the same as the 4.0 Thor . But bigger .

J

 

[henny@canarias]

Not normal D2 V8 UK spec engine then.
Here in the U K we have a D2 with a Thor 3947 engine, which is so call by Land Rover a 4.0 litre D2, a different engine to D1 but the same CC as a D1 V8, which is called a 3.9.

So where in the World are you?

Hi. I live in the Canary islands, but my D2 was bought from a British owner.

 

[henny@canarias]

The CPS is a single point failure, I also have had a MAF which starts then stalls straight away.


This is a bit? neither of the failures above should stop cranking. but it then cooled and started (which is normal failing for a CPS after cooling). Maybe you have a couple of issues.

Do you have the GEMS or THOR engine? I would take a guess at THOR.

But you really needs some diagnostics on it to help.

J

Hi. I have no idea what those abbreviations mean, but I do agree that I need to do some diagnostics. For that reason I am talking to a Landrover specialist to get a date to get the car into the work shop ( upto 3 months waiting list). Thanks for your input.

 

[Stanleysteamer]

Hi. I have no idea what those abbreviations mean, but I do agree that I need to do some diagnostics. For that reason I am talking to a Landrover specialist to get a date to get the car into the work shop ( upto 3 months waiting list). Thanks for your input.

If you want to shorten that you could buy a Foxwell diagnostic tool which ought to point you in the right direction for not too much money.
The MAF is the Mass Airflow sensor and is just engine side of the airfilter, usually.
CPS is crankshaft position sensor which tells the computer where the crank is so it knows when to fire fuel into whichever cylinder needs it at that point in its cycle.

 

[marjon]

Hi. I have no idea what those abbreviations mean, but I do agree that I need to do some diagnostics. For that reason I am talking to a Landrover specialist to get a date to get the car into the work shop ( upto 3 months waiting list). Thanks for your input.

As Stan above. Some also call it a Crank sensor CKP cos the V8 also has a Cam position sensor.
Getting your own diagnostics will help in the long run aswell and will save you the cost of it pretty quick.
Diagnostics at a LR dealer can get very expensive quickly.

I am pretty sure a quick test for the CPS/CKP is to see if you have an RPM reading when cranking, But dont know what you have GEMs or THOR ?
Do you have a box or Bannanas on the top of your engine?

J

 

[Stanleysteamer]

Do you have a box or Bannanas on the top of your engine?

Oh dear, that will really confuse him!!

 

[marjon]

Oh dear, that will really confuse him!!

Ok try this.

Can you see some big numbers which say 4.6?

J

 

[Stanleysteamer]

Ok try this.

Can you see some big numbers which say 4.6?

J

Not from here I can't!!!

 

[henny@canarias]

Ok try this.

Can you see some big numbers which say 4.6?

J

???????

 

[henny@canarias]

 

[henny@canarias]

Oh dear, that will really confuse him!!

 

[marjon]

???????

Ok does it look like this?
Sorry no car around it and you can just make out the numbers, Its on my garage floor .

J

 

[henny@canarias]

I will investigate. Thanks.

 

[henny@canarias]

I wish I was more technical but I'm not. I'm 73 yes old and bought the car out of nesssecity. Our house can only be reached by a vehicle high on its wheels and preferably 4x4.