My wife drives a 2005 freelander HSE TD4 it has circa 88,000 on the clock.

Bought it about 10 months ago and it was mint, it went for a health check about 6 months ago at a local 4x4 garage and they confirmed its condition.

About a month ago we started to have a problem where the engine management light would come on at approx 2500 rpm and it would be unresponsive on the throttle pedal. I must have read 100`s of post on this which steered the fix towards either fuel filter replacement first then such things as the fuel pressure switch.

It was not obvious when the fuel filter was last replaced so I had the vehicle serviced all well and good.
The car run for about a day before the light came back on , my wife took it straight back to the garage where it had been serviced so he could put it on the diagnostic machine.

The diagnostic test indicated the fault to be on the fuel pressure sensor. In order to prove the fault he "reset" it and told us to try it.

We took the vehicle home , it ran for again about a day and the fault reappeared but this time no engine management light come on, it also appeared to be sluggish right from tick over i.e. before it got to 2500 rpm. Its booked in to go back to the garage this Thursday.

Here`s the thing - jumped in it Saturday afternoon started it up and it run faultlessly , likewise yesterday , back to its original performance and its quick for a freelander. No issues right through the rev band ?

The only difference between between last week and the weekend has been the weather , wet last week warm and sunny over the weekend - could this be related to the fault somehow?

Should I just get the fuel pressure sensor replaced ?

Any ideas or thoughts on the above would be greatly appreciated

regards Dave

The fuel rail sensor is a known issue with the TD4. LR produced an overlay harness and replacement sensor, to fix the problem. It's caused by corrosion on the sensor pins and harness connector.
It does sound like a rail sensor issue to me. This could be backed up by the stored codes.

Hi Thanks for this

Since posting this issue I have replaced the fuel filter , fuel pressure sensor , added an overlay harness and replaced the inter cooler pipework still got the issue but it is more spread over the rev band i.e light could on around 2000 rpm or other days 3500 rpm. Had one day where it did not come on at all!

Are there two fuels sensors on the 05 TD4 ?

Any ideas where to look at next ?

You could check your Intercooler Hoses for a split. I had the self-same problem and discovered it was nothing more than a split hose. For me, it was the hose that has a 90 degree angle and connects onto the EGR valve. A simple thing to miss but still gives the fault you're getting.

Hi Guys - turns out it was just simply a faulty fuel pump............