Whining Pathfinder

Submitted: Wednesday, Jul 21, 2010 at 18:11
ThreadID: 80218 Views:2336 Replies:6 FollowUps:8
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Guys,

I have an R51 2007 Nissan Pathfinder, over the last 5 or 6K a whining sound has developed in the engine, not unlike the sound of a turbo chager when it cuts in, that high pitched sort of sound.

Now I have taken it to Nissan and they thought it was belt related, and possibly the belt tensioners, so I had them replaced, but no joy, they are now saying they aren't quite sure what the problem is.

So I took it to two of the most respected 4WD mechanics in Perth, and they are stumped as well. it doesn't seem to affect the driving performance of the vehicle, but i really would like to get it fixed before it becomes a major problem.

Has anyone else experienced a similar problem on this model, any thoughts would be appreciated.
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Reply By: Member - Stuart P (WA) - Wednesday, Jul 21, 2010 at 19:25

Wednesday, Jul 21, 2010 at 19:25
timing belt?
AnswerID: 424787

Follow Up By: Member - Barry H (WA) - Wednesday, Jul 21, 2010 at 19:38

Wednesday, Jul 21, 2010 at 19:38
Thanks Stuart,

I am prepared to look at anything at this stage.
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FollowupID: 695247

Reply By: mechpete - Wednesday, Jul 21, 2010 at 20:35

Wednesday, Jul 21, 2010 at 20:35
hi barry .

have you checked alternater bearings , power steering pump
A/Con compressor bearings in the clutch and front bearing
It might even be the front pump gears in the auto transmission
chers Mechpete
AnswerID: 424807

Follow Up By: Member - Barry H (WA) - Wednesday, Jul 21, 2010 at 20:43

Wednesday, Jul 21, 2010 at 20:43
Thanks for those suggestion mechpete, interesting you are the second person to mention maybe power steering pump, maybe I will get it checked out.
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FollowupID: 695254

Reply By: Member - Toyocrusa (NSW) - Wednesday, Jul 21, 2010 at 20:43

Wednesday, Jul 21, 2010 at 20:43
Hi Barry. I can't believe the dealer didn't remove the accesory belt/s first to try and isolate the noise. Is this a V6. If so I would run the engine without the belt/s. If the noise is evident try to pinpiont the area it is coming from. This may entail running it on a hoist. It could be the timing belt tensioner or idler pulley/s or as stated it could be down in the transmission area. Hope that helps. Bob.



AnswerID: 424811

Follow Up By: Member - Barry H (WA) - Wednesday, Jul 21, 2010 at 20:54

Wednesday, Jul 21, 2010 at 20:54
Thanks Bob,

I am compiling a list of possibilities for my mechanic, your suggestions will be there.

I have to say the Nissan dealer wasn't of much help, Nissan make a great product but it is let down badly by their dealer network.
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FollowupID: 695261

Reply By: Member - Graham H (QLD) - Wednesday, Jul 21, 2010 at 20:49

Wednesday, Jul 21, 2010 at 20:49
Not at all helpful I know but I sometimes stop whining noises by emptying the passenger seats

LOL

All good advice apart from me


Cheers
AnswerID: 424814

Follow Up By: Member - Barry H (WA) - Wednesday, Jul 21, 2010 at 20:56

Wednesday, Jul 21, 2010 at 20:56
Graham,

I just showed SWMBO your post, I think it is fair to say you are not on the Xmas card list this year.
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FollowupID: 695262

Follow Up By: Member - Graham H (QLD) - Wednesday, Jul 21, 2010 at 21:05

Wednesday, Jul 21, 2010 at 21:05
Well you did say you would look at anything.

Tell her Im sorry no offence meant.

LOL
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FollowupID: 695266

Follow Up By: Member - Barry H (WA) - Wednesday, Jul 21, 2010 at 21:13

Wednesday, Jul 21, 2010 at 21:13
Too late for that, you are definately off the Xmas list.
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FollowupID: 695269

Follow Up By: Member - Russler - Wednesday, Jul 21, 2010 at 21:18

Wednesday, Jul 21, 2010 at 21:18
Hey, I was thinking the same thing ... was it along the lines of 'are we there yet?, or "she's looking out my window"
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FollowupID: 695272

Reply By: Going Bush - Thursday, Jul 22, 2010 at 10:42

Thursday, Jul 22, 2010 at 10:42
Sounds like power steering pump or possibly alternator, To confirm use a stethescope, or as already mentioned remove belts & see if noise stops.
AnswerID: 424871

Follow Up By: Member - Barry H (WA) - Thursday, Jul 22, 2010 at 15:06

Thursday, Jul 22, 2010 at 15:06
Thanks Gone Bush, thats three for the power steering pump, so maybe I need to get it checked out.
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FollowupID: 695347

Reply By: Member - peter K (QLD) - Thursday, Jul 22, 2010 at 16:18

Thursday, Jul 22, 2010 at 16:18
Hi barry just a long shot but could it be the electic fan coming in when your at speed and should not cut in.If the noise is aparant when the motor is idling that would rule the fan out PJk
AnswerID: 424900

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