92 GQ Patrol 4.2d Drivetrain vibration

Submitted: Saturday, Jan 15, 2005 at 23:27
ThreadID: 19417 Views:4104 Replies:11 FollowUps:3
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Can anyone help me, I have a 92 naturally aspirated 4.2 diesel Patol. Approx 200,000km's. It has a drive train vibration at about 900-1100 RPM. It is more like a shudder in all gears, I have replaced the engine mounts, checked the tail shaft, and uni joints. I have heard a couple of others do it (diesels), asked local Nissan dealer, they said it is common for the diesels in particular but offered no help. Nissan Aust say they have never heard of it. If anyone can help me I would appreciate it. By the way, if I fan the clutch a little I can get passed it.
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Reply By: Truckster (Vic) - Sunday, Jan 16, 2005 at 00:54

Sunday, Jan 16, 2005 at 00:54
Auto or manual?
LWB or SWB?
Lifted or standard?

I have had this on my auto, it was labouring, the throttle position sensor was all out of wack, causing it to change gear too early.. felt like the car was going to come apart.
AnswerID: 93338

Reply By: Diesel Drinker - Sunday, Jan 16, 2005 at 10:20

Sunday, Jan 16, 2005 at 10:20
For info of all, my GQ is 5spd man, Long wheel base, standard suspension.
AnswerID: 93359

Follow Up By: Truckster (Vic) - Sunday, Jan 16, 2005 at 11:03

Sunday, Jan 16, 2005 at 11:03
http://autos.groups.yahoo.com/group/Nissan_GQ_Patrol/
http://groups.yahoo.com/group/Patrol4WD/
http://forum.patrol4wd.org/phpBB2
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FollowupID: 352346

Reply By: peter4331 - Sunday, Jan 16, 2005 at 13:19

Sunday, Jan 16, 2005 at 13:19
Hi,
My 92 Diesel does the same,so does my brothers,just a little charactristic that comes with this vehicle.
You'll get use to it,I have.
Regards
Peter.
AnswerID: 93395

Reply By: SteveL - Sunday, Jan 16, 2005 at 17:26

Sunday, Jan 16, 2005 at 17:26
I have a '96 model 4.2 diesel and it does the same thing.Better get used to it, I think.
AnswerID: 93415

Reply By: Vinnie - Sunday, Jan 16, 2005 at 17:35

Sunday, Jan 16, 2005 at 17:35
DD

It's the lay shaft doing the vibration, you wont fix it and it wont break.

To settle it down a little try using VMXM75W/85 gear oil. I did and it makes a slight difference.

You will have to do some fairly rough action to break a 4.2TD gearbox.

Mad_mav

AnswerID: 93417

Reply By: Diesel Drinker - Sunday, Jan 16, 2005 at 20:59

Sunday, Jan 16, 2005 at 20:59
Thanks Truckster, Peter4331, Stevel and Vinnie for your input. I will try the gear oil and see how that goes. Sometimes it feels as though the thing is going to vibrate itself to pieces. It is just annoying, and I suppose without spending a small fortune to fix it, I will just have have to learn to live with it.
Thanks again.
AnswerID: 93459

Reply By: draff - Tuesday, Jan 18, 2005 at 12:13

Tuesday, Jan 18, 2005 at 12:13
G'Day, I've got a 94 GQ 4.2 diesel with similar kays, I had the same problem with an excessive amount of vibes at low revs. Got it checked out and it was the clutch. Because the clutch was almost rooted and the springs loose it was causing a vibe in all gears at these revs. Had the clutch replaced and vibes went away. Now I have a first input shaft bearing problem that only occured after clutch was replaced so that isbleepme off. Anyway good luck.
AnswerID: 93745

Follow Up By: Diesel Drinker - Thursday, Jan 20, 2005 at 00:00

Thursday, Jan 20, 2005 at 00:00
Thanks Draff,
What clutch kit did you use if you don't mind me asking, I have heard daikin heavy duty are the go. Sounds like it may be worth replacing the input shaft bearing at the same time, while it is out.
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FollowupID: 352964

Reply By: draff - Thursday, Jan 20, 2005 at 12:18

Thursday, Jan 20, 2005 at 12:18
The clutch that was used was a nissan clutch kit. The mechanic told me this was the go and they are strong enough for turbos. Mine hasn't got a turbo so should be good. I have heard somewhere that Daikin make clutched for nissan, but I am not 100% sure.
AnswerID: 94072

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