Jerking in 4wd - Nissan-Navara.net
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post #1 of 14 (permalink) Old 12-11-16, 03:31 PM Thread Starter
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Jerking in 4wd

Hi, my 1998 manual d22 drives very nice in 2wd, but whenever i switch over to 4wd it changes drasticly.
I only engage on loose surfaces and I dont run 4wd in very tight turns.

to get home I have to drive up a big steep hill of about 1km, now its covered in ice and it can get a bit drifty running 2wd with power only on the rear wheels. So I engage 4wd driving towars the hill, the manual states that I safely can engange it in speeds up to 80 km/h. During the accent I use 3rd gear and running 2k rpms. Then I get this terrifying "jutter" or "bang", its like a violent loss of power, almost like the drive shaft is snagging on something, but everything looks fine underneath.

Ive searched the forum, and it might be the "neutral position switch" thats faulty, but the thread is locked and none of the contributors stated if they were driving in 2wd or 4wd. I only have the issue in 4wd.
I dont engage the 4wd anymore in fear of causing damage.
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post #2 of 14 (permalink) Old 12-11-16, 04:25 PM
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Generally a faulty neutral position switch (NPS) causes a misfire when folk are in 2WD although it is possible that this is causing your issue due to the-higher loading on the engine. The switch causes the fuelling to the engine to reduce to stop overloading the engine when it's in neutral.

It is reasonably cheap to replace but it is possible to machine a mm or two off the shoulder so the switch goes a little bit further into the gearbox.

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post #3 of 14 (permalink) Old 12-11-16, 09:32 PM
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I wasn't aware the D22 manual had an NPS, learn something new every day.


Sounds like a knackered UJ on front prop to me, also just check all the bolts on the flanges are in place.

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Last edited by diydave; 12-11-16 at 09:36 PM.
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post #4 of 14 (permalink) Old 12-11-16, 11:11 PM Thread Starter
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Quote:
Originally Posted by diydave View Post
I wasn't aware the D22 manual had an NPS, learn something new every day.


Sounds like a knackered UJ on front prop to me, also just check all the bolts on the flanges are in place.
Im sorry, but Im a total noob.
"Uj on the front prop"? "flanges"?
I am not familiar with 4wd vehicles, have only owned a front wheel drive Audi A2 beforehand.
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post #5 of 14 (permalink) Old 12-11-16, 11:44 PM
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As you are experiencing an issue when in 4wd only, my suggestion relates to your front propshaft.
This shaft connects your transfer box to the front differential.
The propshaft incorporates two UJ's -universal joints, these allow a certain amount of misalignment on a rotating shaft. These can fail but usually cause a rumbling noise. The flanges are the mating faces of the propshaft to the output shaft of the transfer box and the input shaft of the front differential box. I wondered if you may have lost a couple of bolts on the flanges, causing the flanges to misalign.
Google 4x4 propshafts/UJ's images etc.

Just thinking about your comment above- not knowing about the mechanics of your drivetrain. you may be suffering windup, this can be easily created travelling on friction surfaces with 4wd engaged and doesn't need much turning of the steering wheel to created windup. Are you experiencing any tightness when turning at all before the banging occurs?

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post #6 of 14 (permalink) Old 13-11-16, 12:07 AM Thread Starter
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Quote:
Originally Posted by diydave View Post
As you are experiencing an issue when in 4wd only, my suggestion relates to your front propshaft.
This shaft connects your transfer box to the front differential.
The propshaft incorporates two UJ's -universal joints, these allow a certain amount of misalignment on a rotating shaft. These can fail but usually cause a rumbling noise. The flanges are the mating faces of the propshaft to the output shaft of the transfer box and the input shaft of the front differential box. I wondered if you may have lost a couple of bolts on the flanges, causing the flanges to misalign.
Google 4x4 propshafts/UJ's images etc.

Just thinking about your comment above- not knowing about the mechanics of your drivetrain. you may be suffering windup, this can be easily created travelling on friction surfaces with 4wd engaged and doesn't need much turning of the steering wheel to created windup. Are you experiencing any tightness when turning at all before the banging occurs?
I am familiar with the issue of using the 4wd on friction surfaces, especially in tight turns. And the only mishap have been one turn out of the supermarket parking lot where I forgot I was in 4wd. The turn was horrible with a lot of juttering and banging, but the problem came before this. I have not thought about tightness when turning in 4wd.
I have to test it tomorrow after Ive had a thorough look at the front propshaft and what it connects to.
Thanks!

Edit: I have no idea how the previous owner handled the vehicle, and I never got him to demonstrate the 4wd at the time, wich was pretty short sighted of me. I have owned the vehicle for about two-tree weeks now.
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post #7 of 14 (permalink) Old 09-01-17, 10:36 PM Thread Starter
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New hubs

Been a busy holiday season, but now Im back on track. Talked too the local Nissan dealer about the problem, he said that in over 80% of the cases with the issues I have it was the automatic hub thats damaged. He recommended me too switch them out for manual hubs, but the cost of getting this done at the shop was pretty hefty. 1400 Dollars!
I like too fix things myself, and switching out the hubs is easy, but switching to manuals is another challenge. I dont know what rebuilding needs too be done too hubs. So I am pretty certain that I will go for the automatic ones, its also more convenient for day too day driving. If you have any insight into too this topic, I would be happy too hear from you
These are the ones Im contemplating ordering:



https://www.aliexpress.com/store/pro...405143969.html
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post #8 of 14 (permalink) Old 09-01-17, 11:01 PM
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Have a look here: https://www.ks-international.com/nis.../avm-hubs.html
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post #9 of 14 (permalink) Old 10-01-17, 10:20 AM
I'm now in 4th gear with power to spare!
 
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I hope thats 1400 NOK
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post #10 of 14 (permalink) Old 20-01-17, 05:44 PM
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Are all your tyres the same size?
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Last edited by lookskyward1; 20-01-17 at 06:09 PM. Reason: fix typo's
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