Freelander 2 (LR2) Intermittent engine fault

Hi all. My 2014 SD4 developed a fault last week the day before going on holiday so only had time to take to a garage for a quick check. Fault is that when driving away from standstill there is a 2-3 second delay before the rev counter starts to move slowly and then car pulls away very slowly. Performance is poor with reduced power but no misfires. This does not happen when the engine is cold and if I leave the car for an hour it is fine again but the fault will return. The following has been checked within the short timescale available - Blocked off the egr (then unblocked) and checked it wasn’t open, checked the throttle flap isn’t shut, checked Intercooler pipes. On the diagnostic the fuel pressure sensor was showing excessive pressure but there were no fault codes and no reduced performance indicators on the dash. The day after the checks I drove for 2 hours down the M5 car was perfect. Drove off from services car was perfect. Got off the M5 into a built up area and fault returned. During our week away the intermittent fault remained. Coming back home I got onto the M5 and the first incline I had to manually select 3rd keep to stay at 40mph. The next incline it flew up at 60 no problem (towing a trailer tent so limited to 60). The remainder of the journey the fault was the there but as long as I have momentum it's just drivable even if I drop down to 3 mph then accelerate it does pick up speed quicker than from a standing start albeit very slowly. It's going into the garage on Wednesday but if anyone has any suggestions on what might be causing this I would be extremely grateful, thank you.

Could be the cogs in the throttle body, they wear and can cause problems that you have worth taking the throttle body off and opening it to check.

Check the senor at the same time, it may need cleaning with contact cleaner only, or replacing.

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open the tangs around the body.
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lift the large cog off.
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check the small cog for teeth damage.
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Kit can be purchased for repair.
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Glued and screwed mine for extra strength has gluing alone i wouldn't trust, but lots have only glued it.
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let us know how you get on.

Arctic2 said:

Could be the cogs in the throttle body, they wear and can cause problems that you have worth taking the throttle body off and opening it to check.

Check the senor at the same time, it may need cleaning with contact cleaner only, or replacing.

1

open the tangs around the body.

2

3

4

5

lift the large cog off.

6

check the small cog for teeth damage.

7

8

Kit can be purchased for repair.

9

10

Glued and screwed mine for extra strength has gluing alone i wouldn't trust, but lots have only glued it.

11

12

let us know how you get on.

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Thank you for the detailed response. The throttle body was changed about 6 months ago due to noise. It's worth having it checked again though.

RedMike60 said:

Thank you for the detailed response. The throttle body was changed about 6 months ago due to noise. It's worth having it checked again though.

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Was the throttle body new or second hand, either way i think it needs coding in, Nodge would know but i think he has left us due to rude reaction to one of his threads,

Arctic2 said:

Was the throttle body new or second hand, either way i think it needs coding in, Nodge would know but i think he has left us due to rude reaction to one of his threads,

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I assume new as it was done under warranty after I purchased the car. Not sure about the coding but it's been on the car for 6 months without issues

RedMike60 said:

I assume new as it was done under warranty after I purchased the car. Not sure about the coding but it's been on the car for 6 months without issues

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Doubt it's the throttle body then, diagnosis is the way forward i think. when was fuel filter last changed.

Update. 2 week old Napa fuel filter removed to be replaced with a OEM one and the fuel filter rattled so obviously something come loose inside and blocking the Inlet / outlet. Mahle filter fitted, all ok now

RedMike60 said:

Update. 2 week old Napa fuel filter removed to be replaced with a OEM one and the fuel filter rattled so obviously something come loose inside and blocking the Inlet / outlet. Mahle filter fitted, all ok now

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Hi Mike.
The FL2 is very unforgiving if aftermarket fuel filters are used, in short they cause trouble in a short time, always best to use a good fuel filter such as below.

Purflux by SOGEFI
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I always keep 2 of the above on the shelf and change them out ever two/three years regardless of mileage.

Both my FL2 TD4 & SD4 are due later this month.

Not forgetting the filter needs to be primed.
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Yes, purflux fitted and took a while to start and needed a lot of priming