Viermalvier.de, das Geländewagenportal Forums Marken talk Land Rover Motorprobleme beim V8 50th Aniversary

Schon gut Frau 8. Kommen wir mal wieder zum Thema. Ich denke der NAS 4.0 sollte ein Ansatzpunkt sein:

Idle air control (IAC)
Idle speed is controlled by a stepper motor which
consists of two coils. When energised in the correct
sequence the coils move a plunger which opens and
closes the throttle bypass controlling the quantity of
idle air. The stepper motor controls idle speed by
moving the plunger a set distance called a step. Fully
open is 200 steps and fully closed 0 steps. Failure of
the stepper motor will result in low or high idle speed,
poor idle, engine stall or non start. The fault is
indicated by illumination of the malfunction indicator
light (MIL) on North American specification vehicles.

IDLE AIR CONTROL VALVE (IACV)
Service repair no - 19.22.54
Remove
1. Disconnect battery negative lead.
2. Disconnect multiplug from IACV.
3. Remove 2 bolts securing IACV to plenum
chamber.
4. Remove IACV.
5. Remove gasket and discard.
Refit
6. Clean mating faces of IACV and plenum
chamber.
7. Clean plunger on IACV and plunger seat on
plenum chamber.
8. Using a new gasket, fit IACV to plenum
chamber.
9. Fit and tighten bolts securing IACV to plenum
chamber to 2 Nm, 1.5 lbf ft.
10. Connect multiplug to IACV.
11. Reconnect battery negative lead.


Und die Position des Stepper Motors ist auf der Fahrerseite vor dem Lufteinlasskanal.

Gruß

Carsten ;-)