Just joined, own a 2009 110 Defender 2.4

Hi all, I'm hoping to pick the brains of the boffins. My defender 2.4 has been giving two main problems, engine surging intermittently between 2500/3000 rpm and revs dropping away ie when you bring the revs up in neutral and hold the pedal steady they can fall away by around 1000 rpm. I've replaced and checked/had tested the following
1 injectors 100%
2 fuel rail replaced with genuine new LR rail and sensors
3 MAP sensor replaced
4 MAF sensor replaced
5 VCV replaced with hp pump relearn
6 New MAN fuel filter
7 Inlet manifold gaskets replaced
8 Fuel tank inspection - clear
9 Fuel sender unit good
10 ECU relay swapped
11 Remap with EGR delete and blank plate
12 HP fuel pump good
I did notice a slight weep mist on the intercooler at the hose connection but the hose was in tact. Have a new LR intercooler on route.
Any ideas would be much appreciated as I'm not sure if this could be an intercooler issue. No black smoke etc. Thanks in advance.

Welcome to the forum.

Thanks indeed.

Great motor, welcome

Welcome

Thanks

doriz said:

Great motor, welcome

Click to expand...

Thanks

Hello and welcome

Thanks, just out of curiosity, I posted an article / issue with my 09 Defender 110 2.4 and not sure if I did it the correct way, could I ask if it can be seen. Many thanks.

This is the Introduce Yourself section.

You'll get technical help if you post questions over here.
https://www.landyzone.co.uk/forum/defender-90-110-130.7/

Much appreciated

Welcome to the forum

Thanks indeed Hippo