RangeRovers.net Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
185 Posts
Discussion Starter #1
Hi all,

Since I bought my P38, it's had a problem of somewhat hard shifting in the transmission. It hasn't been enough to worry me. The mechanic I first had look at the car, who knew a bit of the vehicle's history, said that he thought the gearbox was on its way out. He said he had told the previous owner the same thing when they bought it three years earlier. I didn't find it all that convincing, and either way I haven't even come close to looking at this issue in the eight months or so since I've had the car and I've mentally allowed for *maybe* having a big expense in the future. Basically it shifts kinda hard, sort of hesitating then PLONK into gear. Bearable, as I said, and very consistent - I know exactly when it is going to do a hard shift before it does it.

Anyway, the other day I was having a bad day and took a series of speed bumps a bit faster than usual. They gave the car a bit of a whack but nothing too major. I am mentioning this because it's the only thing I can think of that remotely comes close to possibly explaining what happened next. It may however be completely irrelevant.

I got home. Went out again about 15 minutes later and on start, the console told me I had a "gearbox fault". For that drive, which lasted about 15 minutes, the transmission was shifting TERRIBLY, really hard shifts. But it did get me to my destination.

I ran my errand, started the car, and drove off. No gearbox fault, and BEAUTIFUL shifting... shifting up, shifting down, pretty much as I imagine P38s were meant to shift when they were new. Since then, the beautiful shifting has continued. The bad shifting before was very predictable and consistent as I said, so I am very sure the change is not imaginary. The tranny is "fixed".

I am definitely not complaining. But I'm curious. I have some guesses of my own, but what does everyone else think? Is this some kind of last-gasp-of-the-tranny symptom, or did something electrical/hydraulic get unclogged or get a better connection somehow? Elves?

I would be really interested in anyone's wild speculation.

Jason
 

·
Registered
Joined
·
553 Posts
Wow that is great luck you should have gone and bought a lotto ticket right away! Im glad yours is sorted now! My gearbox is fine excpt between 2nd and 3rd were it shifts really roughly but luckily no sound from the gearbox maybe i should go out and ramp a couple speed bumps!
 

·
Registered
Joined
·
453 Posts
You can get the gearbox fault occuring if there is an electrical problem (bad connection / ground)
I had this due to bad grounds / bad leads which caused not too smooth shifting.

Replaced leads / ground and all fine now.
 

·
Registered
Joined
·
185 Posts
Discussion Starter #4
keithdixon said:
You can get the gearbox fault occuring if there is an electrical problem (bad connection / ground)
I had this due to bad grounds / bad leads which caused not too smooth shifting.

Replaced leads / ground and all fine now.
I was tending to think it was something electrical. Which leads/grounds are you referring to?
 

·
Registered
Joined
·
453 Posts
I replaced all main power leads to starter, alternator, fuse box and earth leads to chassis, body, alternator casing.

Have a look in rave to see what earthing points are used for the gearbox / gearbox ecu

Are there any faults logged?
 
1 - 5 of 5 Posts
Top