Thread: PUMA 2.4 Rough / Lumpy Idle only when cold - SCV, Injectors, EGR, MAF or MAPT

Just read this, and not sure if I’ll be of much help at all, but anyway.

I had a similar issue with mine when it was new,, LR replaced the ECU.

Theres two really good guys in Wodonga that you could probably see. Ones an A grade mechanic and all round good guy who’s extremely helpful, Ivan Clarke,, and like Justin, knows his Landrovers inside and out. The other is a guy has the four wheel dyno. He piloted mine and fixed it 😁 when LR in Melb said it was as good as it was ever going to be 🤬 (long story).

Sing out if you want more info on the Wodonga guys.

Originally Posted by titus

Good to know - you happy with the BAS remap?

Very!

I am not sure if the RRC can do things like reconfigure the central locking.

I have the GapIID diagnostic tool, which can also do the remaps.

Originally Posted by Chops

Ones an A grade mechanic and all round good guy who’s extremely helpful, Ivan Clarke,, and like Justin, knows his Landrovers inside and out. The other is a guy has the four wheel dyno. He piloted mine and fixed it 😁 when LR in Melb said it was as good as it was ever going to be 🤬 (long story).

Sing out if you want more info on the Wodonga guys.

Hi Chops, I would love the contact for the 4 wheel dyno guy if you have it and thanks for posting!!!

The VCV (Volume control valve) could be at fault. It can cause the vehicle to cut out when idling or can cause a surge when driving. If you look at the passenger side of the engine you will see it sitting on top of the injector pump. If you remove the manifold in front of it, you can change it easily.
Mine was replaced with a Denso unit, which is a lot less than the Land Rover one. You can also use the Ford unit which is the same and also cheaper than the Land Rover one.
Landrover part LR009837
Ford part 1 514 885 (6C1Q 9358 A
Denso one is the cheapest.
Some maintain that a learning exercise is necessary after a change of the VCV, others say it is not necessary. Mine was changed without a learning exercise and all is running well. We didn't have the facilities to do one. A faulty VCV does not throw up any fault codes.
If you have a month to spare there is quite an amount of discussion on the Defender2 site regarding the VCV.
Regarding a non start, I would not worry about it. If it fails to start just remove the key, press lock then unlock and it will then start.
I have two sets of keys for the Puma. One set always starts the vehicle while the other (programmed by a maindealer) occasionally gives the non start issue. I just remove the key, press lock then unlock and insert the key and it will then start. I think it is a programming issue with the key.
Think of it as an anti theft device.

Originally Posted by spudfan

The VCV (Volume control valve) could be at fault. It can cause the vehicle to cut out when idling or can cause a surge when driving. If you look at the passenger side of the engine you will see it sitting on top of the injector pump. If you remove the manifold in front of it, you can change it easily.
Mine was replaced with a Denso unit, which is a lot less than the Land Rover one. You can also use the Ford unit which is the same and also cheaper than the Land Rover one.
Landrover part LR009837
Ford part 1 514 885 (6C1Q 9358 A
Denso one is the cheapest.
Some maintain that a learning exercise is necessary after a change of the VCV, others say it is not necessary. Mine was changed without a learning exercise and all is running well. We didn't have the facilities to do one. A faulty VCV does not throw up any fault codes.
If you have a month to spare there is quite an amount of discussion on the Defender2 site regarding the VCV.
Regarding a non start, I would not worry about it. If it fails to start just remove the key, press lock then unlock and it will then start.
I have two sets of keys for the Puma. One set always starts the vehicle while the other (programmed by a maindealer) occasionally gives the non start issue. I just remove the key, press lock then unlock and insert the key and it will then start. I think it is a programming issue with the key.
Think of it as an anti theft device.

Do u have the Denso Part number?

Originally Posted by titus

Hi Chops, I would love the contact for the 4 wheel dyno guy if you have it and thanks for posting!!!

Just so you know, I haven’t forgotten, I’ve just got to find him again, as in a name. Can’t find my paperwork from it, so I may try and put up a map thingy for you,, that may prove easier 🙄

Chops, was it Websters Dyno and Performance in Queen St Wodonga?
Rich.

I thought he was in Hempel St,, (??)