Discovery I (LJ) V8-4.0L (1996)
1.
The aperture on faulty castings is approximately 0.315 x 0.118 in (8x3 mm) (on normal castings the aperture should be 0.433 x 0.433 in (11x11
mm)).
2.
Corners marked in illustration are square on faulty castings (normally they should be rounded).
3.
On good castings, IACV spring is clearly visible, but more difficult to see on faulty castings.
What to Do
If above symptoms are present and a IACV housing is fitted to vehicle, remove housing, remove stepper motor from housing and file down housing
aperture to meet specifications as outlined above. when the IACV is refitted use Loctite 242 on the threads before installing. Remember to RESET IDLE
on a fully warm engine and transmission.
WARRANTY
Normal warranty policy and procedures apply
COMP.CODE
7W1C
SR0