free lander 1 v6 petrol unstable idle speed

hi guys and girls ,i have a free lander 1 2005 v6 petrol
i have been have some series of problems with my free lannder for weeks .
i will be very grateful if some one can help me out.
at idle speed when i turn on the ignition i notice it been unstable at idle speed with its rotation speed oscilicating between 1000 and 3000.
i have a scanner and i had this code on it (P1477-VARIABLE INTAKE BUTTERFLY VALVES. P2071-INTAKE MANIFOLD TUNING IMT VALVE STUCK CLOSED BANK 1a)
please can some one kindly help me ,i have done all i can but still my free lander continues unstable at idle speed.
thanks a lot
hope to get a response
from:charles

Have you cleaned out the IACV? The VIS motor also needs replacing.

Hi good evening.
I have cleaned the IACV but the problem still continues.
Please where is the VIS motor located.
I am very grateful for your reply.
Where is the VIS motor located please.

Charlesihidero said:

Where is the VIS motor located ple

Click to expand...

There are 2, but they don't normally upset the engine's idling.

Morning,yes I found the VIS.
Do you think I should change the IACV,
Or the MAF sensor because when I removed the MAF sensor plugs the engine continued running , normally it sgisho stop because I unplugged the Mass air flow sensor

Charlesihidero said:

Or the MAF sensor because when I removed the MAF sensor plugs the engine continued running

Click to expand...

Right, so it's an NA spec V6 then. Hunting and instability at idle it likely to be the E throttle body. We don't get that this side of the pond, so experience with it is very limited.

Thanks a lot.
Where is the E- throttle located please.

Charlesihidero said:

Thanks a lot.
Where is the E- throttle located please.

Click to expand...

I would look at live data from the maf sensor to see what it is seeing.

The e throttle is right
Next to the Maf sensor. Do you have the rave manual ?

Hi
I dont have the manual that show all the mechanical part and electrical parts
Pls do you know any website where I can download this for free.