Auto box
- Thread starter liamoc
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Datatek
Well-Known Member
- Posts
- 44,840
- Location
- Near Poitiers SW France
From a 4.2 what? Linkeage not adjusted correctly is a possibility.
marccleave
Active Member
- Posts
- 644
- Location
- Dorset
Is it really that hard to decipher? We're on a Land-Rover forum, in the Range Rover child board and someone mentions something from a 4.2 into a classic.
My first guess would be from a 4.2L V8 LSE. Of course OP could have been a bit more specific in the first place.
- Posts
- 16,478
Not sure on the specifics...but do the different engines and their associated torque maps have different gear change points...???
So the Gearbox and ECU (from the 4.2) will have been setup for the torque output from the 4.2 and when mated to either the 3.5 or the 3.9 engine, the gear change points will be different due to different torque outputs....
Or am I over thinking this??
I know the more modern engine/gearbox combo's are linked to talk to eachother, so when the engine load/demand increases/decreases the gearbox adapts and selects the most appropriate gear based on engine output!
So the Gearbox and ECU (from the 4.2) will have been setup for the torque output from the 4.2 and when mated to either the 3.5 or the 3.9 engine, the gear change points will be different due to different torque outputs....
Or am I over thinking this??
I know the more modern engine/gearbox combo's are linked to talk to eachother, so when the engine load/demand increases/decreases the gearbox adapts and selects the most appropriate gear based on engine output!
norseman
Well-Known Member
- Posts
- 3,256
- Location
- Essex - UK
I suspect you are. Although a confirmed 'Classic' fan I'm not familiar with the later model years but I don't think the gear-shifts are controlled by any ECU, it's simply a hydraulic 'box & electrics didn't come into play until the P38.
Datatek
Well-Known Member
- Posts
- 44,840
- Location
- Near Poitiers SW France
What's your problem newb? Early classics the box is hydraulically controlled, late are electronic so not such a daft question.Is it really that hard to decipher? We're on a Land-Rover forum, in the Range Rover child board and someone mentions something from a 4.2 into a classic.
My first guess would be from a 4.2L V8 LSE. Of course OP could have been a bit more specific in the first place.
:multiply:
marccleave
Active Member
- Posts
- 644
- Location
- Dorset
I was under the impression that the Range Rover Classic was fitted with the 4HP22 from ~85 to when it finished production in ~95. And as such were only hydraulically controlled. If you could link to a source with more information on this then that would be great, I'm curious to know the differences and variations on how they worked.
Datatek
Well-Known Member
- Posts
- 44,840
- Location
- Near Poitiers SW France
I could be wrong, but I though the last of the Classics had the ZF4HP22e.
Early boxes were totally hydraulic with manual selection of the lower hears from the stick. The ZF4HP22e uses electronically controlled solenoids to select the gears, only the A clutch and the reverse clutch are manually selected from the stick, also there is no governor on the e version, regulation is electronic via a solenoid.
all classics are hydraulic..no electronics on autobox..unless it was prehaps LR special test rig special for p38...but i dought that!
my guess would be simple..cable not adjusted proper so only selecting 123..ie not going into D, but 3..
my guess would be simple..cable not adjusted proper so only selecting 123..ie not going into D, but 3..
marccleave
Active Member
- Posts
- 644
- Location
- Dorset
Damn, I'm a **** hot newb!
I think you are.
Last edited:
