5th Gear GU Patrol 3.0L TD

Submitted: Monday, Mar 27, 2006 at 18:21
ThreadID: 32224 Views:2823 Replies:9 FollowUps:1
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Hi all

does anyone out there know why the 5th gear would suddenly go in my Nissan Patrol, I was not towing amd was traveling at 110 kph.

If anyone could shed some lite on the reason it could have happened it would be appreciated

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Reply By: Member - John - Monday, Mar 27, 2006 at 18:34

Monday, Mar 27, 2006 at 18:34
Well known problem with early GU's. Should be covered by warranty. Good luck.
John and Jan

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AnswerID: 163215

Reply By: Member - Andrew(WA) - Monday, Mar 27, 2006 at 18:59

Monday, Mar 27, 2006 at 18:59
Problem was suppose to be fixed in models made after November 2001...

If yours is pre this date...common problem. Same in 3.0Tdi and 4.2
AnswerID: 163224

Reply By: Johnny boy - Monday, Mar 27, 2006 at 19:18

Monday, Mar 27, 2006 at 19:18
Hi mate look Im not up to speed with patrols but I do know that 5th gear on almost any gear box is only there for higher speed driving ( 90km and up) so if you or anyone that drives the car makes a habit of droping it in 5th at lower speeds it then puts unneeded stress on 5th gear causing hair line stress fractures and eventual failuire ....well thats just another point of view I hope this might help ??

Regards J.B

AnswerID: 163234

Reply By: Rock Crawler - Monday, Mar 27, 2006 at 19:58

Monday, Mar 27, 2006 at 19:58
mates went and was covered under warranty even thought it had just lapst. it usually spins on the shaft

good luck
AnswerID: 163255

Reply By: Axle - Monday, Mar 27, 2006 at 20:13

Monday, Mar 27, 2006 at 20:13
From what i understand its a lubrication problem on the splines, both toyo, and landrover have suffered the same prob with various gearboxes.
AnswerID: 163267

Reply By: GUPatrol - Monday, Mar 27, 2006 at 20:29

Monday, Mar 27, 2006 at 20:29
The truth is that the problem is not on early model patrols...

The problem is on models from 2000 to 2001.

The problem appeared after the gear manufacturer made an error on tolerances during manufacturing, fifth gear is the first to go because it is the smallest and stays on longer (cruising), heats up, expands and the spline lets go.

To fix the whole g'box has to come out and the main spline as well as gears have to be replaced.

Nissan should do it under warranty even if its out of warranty.

Call the NIssan customer support and they will ask for the VIN number, if the gearbox is within those faulty ones they will fix it.

For those who will jump at this.... some very late '99 models were also affected but very few.

If in doubt call Nissan and quote the VIN and they will advise what to do.

AnswerID: 163278

Follow Up By: Truckster (Vic) - Monday, Mar 27, 2006 at 21:59

Monday, Mar 27, 2006 at 21:59
From this week on Outerlimits.
Yeah, it has done exactly as someone described above, driving along in 5th, they said it felt like it popped out of gear and then nasty grinding noise, which was obviously the 5th gear spinning on the main shaft from what people have said above. Its a 99 model brought in 2000, just had a turbo upgrade done, wonder if that didn't help?
FollowupID: 418032

Reply By: brd - Monday, Mar 27, 2006 at 20:44

Monday, Mar 27, 2006 at 20:44
I detected mine early when heavy wear metals became apparent (2001 model). 5th gear was replaced with a new part number gear, which allowed proper lubrication to the spline. The only other symptom was a resistance to shifting out of 5th after some time driving. I imagine the gear and spline wear had caused them to snag slightly. For the next 140,000 kms I cad the car for, there were nil wear metals on the magnetic plug.

I think the box is fine for towing in 5th, and did so regularly myself. It's a pretty beefy unit, and Nissan advice to me also OK'ed it.

Best of luck
AnswerID: 163284

Reply By: Bilbo - Monday, Mar 27, 2006 at 22:23

Monday, Mar 27, 2006 at 22:23
I've used a 1989 4.2 N/A GQ traybck ute gearboxd for years towing up to 6 tonnes (naughty) in 5th gear at 85 to 120 kmh without any issues whatsoever. That was with an early GQ box. The best gearbox ever made for a 4WD.

After late 1999 to 2001, Nissan really stuffed up with that 5th gear and ruined the reputation of a great, unburstable gearbox.

AnswerID: 163319

Reply By: allan670 - Wednesday, Apr 05, 2006 at 21:28

Wednesday, Apr 05, 2006 at 21:28
I have a 2000 patrol mine went 9 months ago at 100 000 km
I rang nissan head office ,they didnt want to know me
after arming my self with an arm load of simalar cases(printed from forums such as this)
I went to my local dealer and with alot of umming and aring they rebuilt the box free of charge
well and truely out of warranty
so do the reasearch and best of luck
AnswerID: 165094

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