Thread: Possible gearbox problems.

hi mate.

If you go here Repair Parts Schedule (RPS) -REMLR

scroll down till you find a link
PUBR001 - Land Rover Perentie 4x4 Combined Parts Book V1.01 LARGE FILE 18 MB

click on that and you can view/download the full parts book.

Originally Posted by Chris078

Just looked at the book, there does not seem to be.

That does not mean that some crap is not blocking it.

If you put it in second and give it a bootful up to the redline, does it lag or feel starved?
I would have though it would consume more fuel accelerating hard in second or third than cruising in 4th.
Have you checked there is nothing blocking the air intake?

Air filter was checked at purchase but i do have a spare inner and outer.

Revs up just fine. Only emerges in 4th under acceleration or load.

This is what made me think gearbox.
Fuel econony over last 1000km was 10.6L/100km

Beforehand was averaging 9.5


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Originally Posted by Chris078

hi mate.

If you go here Repair Parts Schedule (RPS) -REMLR

scroll down till you find a link
PUBR001 - Land Rover Perentie 4x4 Combined Parts Book V1.01 LARGE FILE 18 MB

click on that and you can view/download the full parts book.

Think i have that full file printed in a folder in the map pocket.

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Originally Posted by dranoweb

Air filter was checked at purchase but i do have a spare inner and outer.

Revs up just fine. Only emerges in 4th under acceleration or load.

This is what made me think gearbox.
Fuel econony over last 1000km was 10.6L/100km

Beforehand was averaging 9.5


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It's a useful document, wasn't sure if you had it or not.

Couldn't hurt to swap out the filters.
What i actually meant to check in the air hose under the wing. Just inside the end of the hose, there is a circular bracket to keep the hose open against the thing that holds it in place. This bracket has a 1cmx1cm mesh in it. might be worth checking there isn't a leaf or plastic bag or something in there.

Maybe also check that the accelerator cable is pulling the lever on the fuel pump all the way open when it's on the floor. Might not matter too much if your a couple of hundred rpm short in the lowers gears, in 4th you really need everything if your on a slope.


dropping the gearbox oil and see if there is anything excessive on the magnet or in the gearbox oil filter might be your next step.

<edit> thought. fuel economy increasing, lack of power at high speed; clogged/faulty injectors perhaps?

I procured a spare set of injectors at auction a while back.

All oils and lube in the entire vehicle was changed prior to trip - gearbox included.

Was very dark with a few shiny sprinkles but very little brass.

but im doing engine oil soon, couldn't hurt to do gearbox again

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Originally Posted by dranoweb

I procured a spare set of injectors at auction a while back.

All oils and lube in the entire vehicle was changed prior to trip - gearbox included.

Was very dark with a few shiny sprinkles but very little brass.

but im doing engine oil soon, couldn't hurt to do gearbox again

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What kind of condition were they (the injectors) in? I've thought about grabbing some if they ever do a parts auction in Brisbane.

Good thing 15w40 is cheap(ish). Just thought if you suspect something in the gearbox, checking the oil might be a good idea.

Well it will have to wait for the weekend now.

Injectors look well used. Planning to get nozzles replaced before swapping over.

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As a side thought - could this be a clutch issue?

I replaced the slave cylinder before my trip as I had been loosing fluid.

When I pulled the drain plug on the bell housing, nothing came out, but had a residue the same colour as the contaminated fluid.

I've read something about "dual mass flywheels" causing this issue.

But my knowledge of clutch technology is a little weak.

But the thought of an unbalanced flywheel would be in keeping with what i'm feeling

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