Hodge's new 4.2

[nissannewby]

Whats the tension like on the belts?

Does it disappear if you turn the ac off?

[mudski]

Car just started making horrendous whining noise up front like a dry bearing ??? Really hope it's not the water pump bearing they put in... it's not the belts .

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A/c idler bearing gets my vote.

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[Hodge]

Whats the tension like on the belts?

Does it disappear if you turn the ac off?

Ok. Belt tension is fine, nice and firm and hasn't changed since I last felt it... AC was off when noise started. But turning aircon on/off made no difference.
I was just idling at a set of lights, when it slowly began whining it's way up gradually getting louder.
It seems to be coming from the central part of the front of the motor, which is where the pump is... I chanced it and drove it home about 15km's and nothing broke lol. But can't inspect anything now as it's dark and I'd wake up half of the suburb with the noise. People here are pissed off with my straight through exhaust let alone this noise added in the mix....
Will look at it in the morning.

[Hodge]

So got home from work and straight away prepped to start taking belts off and turning stuff trying to find where it's coming from... Chose to turn the car on before hand and, the noise is gone ...... Had a good look at belts and pulleys, nothing out of the ordinary.
Warmed up, took her for a drive, air con on / off.... Nothing!! Drove it like I stole it ! Not even a chime of the the cacophony that it had yesterday evening...
Ironically I'm more p'ed off that it's gone, than when it first happened! I hope it returns, so I can find what it is and sort it out...

[Hodge]

So just done a 120km turnaround trip and noise did not return ......
This is the second time the car's done something like this to me only for a day...First the fuel cut off solenoid played up for one day and never since and now this . TD42's are self healing overnight :P

[BigRAWesty]

So just done a 120km turnaround trip and noise did not return ......
This is the second time the car's done something like this to me only for a day...First the fuel cut off solenoid played up for one day and never since and now this . TD42's are self healing overnight :P

Personally I'd still at least take the belts off and give everything a good wobble and spin to see if there is any movement or notching.
I'd say it was a dry bearing and when it's rested a bit of lube has fallen into place..

[jay see]

The a/c bearing will make the noise weather the a/c is on or not.
I had a noisy one and took the tension off that belt, till I got around to changing the bearing.

[Hodge]

So with the cold weather arriving, the mighty 4.2 gear rattle noise is getting fairly vicious in the morning. I dread driving away from home because it wakes up everybody in the street. Forget the straight through exhaust, this is next level of noise...

Has anybody ever eliminated this ? Mat ? What's your thoughts on this ... Can something be done while the gear box is out when they do the clutch?
Might sound birch but , It's getting really annoying ...

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[nissannewby]

Suspension. Check rear pinion angle. Run a double cardan joint on the rear shaft.

Even going back to standard height will aleviate it.

[Hodge]

OK cheers. So if pinion angles are out , via a quick search , the way to correct is the adjustable upper arms ?

The cars been doing this since I picked it up way before it received a lift kit . Can the pinion angle go off track without touching suspension ?

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