patrol engine noise,any ideas

Submitted: Saturday, Jan 19, 2008 at 16:37
ThreadID: 53668 Views:2037 Replies:6 FollowUps:3
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I have a 3litre patrol that has a noticeable whine particually when cold have heard others with the same noise,can anyone help with diagnosis ? otherwise runs well has 230k 2002 model,thankyou in advance.<sounds like it comes from around the turbo
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Reply By: Bonz (Vic) - Saturday, Jan 19, 2008 at 17:14

Saturday, Jan 19, 2008 at 17:14
Check your exhaust is tightened to the back of the turbo properly.
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AnswerID: 282527

Follow Up By: tdf - Sunday, Jan 20, 2008 at 08:56

Sunday, Jan 20, 2008 at 08:56
will do that, had the exhaust pipe cracked and welded recently thankyou
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FollowupID: 547154

Reply By: Nav 8 - Saturday, Jan 19, 2008 at 17:46

Saturday, Jan 19, 2008 at 17:46
Have it checked by a qualified diesel tec ASAP. Nav.
AnswerID: 282531

Follow Up By: tdf - Sunday, Jan 20, 2008 at 08:57

Sunday, Jan 20, 2008 at 08:57
thankyou,has done this for a couple of years will take it in this week
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FollowupID: 547155

Reply By: Outbacktourer - Saturday, Jan 19, 2008 at 20:43

Saturday, Jan 19, 2008 at 20:43
Serpentine belt/tensioner?
AnswerID: 282557

Follow Up By: tdf - Sunday, Jan 20, 2008 at 08:58

Sunday, Jan 20, 2008 at 08:58
have changed the belt but will check again
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FollowupID: 547156

Reply By: Member - Bucky (VIC) - Sunday, Jan 20, 2008 at 09:53

Sunday, Jan 20, 2008 at 09:53
I too had a terrible squealing noise from under the bonnet.

First I thought the TURBO

Looked again and It was that tensioner
I'll rip off the tensioner, to put a new bearing on it..

Everything is in the wrong place with that Nissan tensioner, but in 1 hr got it off, rattled it ,, felt good, ,, sprayed Inox all over and in the thing, and put it back on, only to find that the noise came back in 10 minutes.

So much for being a legend !

Turned out to be the belt.
New belt on,,after 1 week that squeal came back again , put the old belt back on ,,, and presto no noise, ever again ( 20 months later )

You tell me ?

But you have to check out these things, yourself, and ask around.

Pay a mechanic, and they will charge like "wounded bull".

my theory ,, the belt was tired,, needed a rest !
Cant think of anything else

Cheers
Bucky



AnswerID: 282647

Reply By: Member - Bucky (VIC) - Sunday, Jan 20, 2008 at 09:54

Sunday, Jan 20, 2008 at 09:54
I too had a terrible squealing noise from under the bonnet.

First I thought the TURBO

Looked again and It was that tensioner
I'll rip off the tensioner, to put a new bearing on it..

Everything is in the wrong place with that Nissan tensioner, but in 1 hr got it off, rattled it ,, felt good, ,, sprayed Inox all over and in the thing, and put it back on, only to find that the noise came back in 10 minutes.

So much for being a legend !

Turned out to be the belt.
New belt on,,after 1 week that squeal came back again , put the old belt back on ,,, and presto no noise, ever again ( 20 months later )

You tell me ?

But you have to check out these things, yourself, and ask around.

Pay a mechanic, and they will charge like "wounded bull".

my theory ,, the belt was tired,, needed a rest !
Cant think of anything else

Cheers
Bucky
AnswerID: 282649

Reply By: Patrol22 - Sunday, Jan 20, 2008 at 11:32

Sunday, Jan 20, 2008 at 11:32
Sometimes I reckon it's good to be a bit deaf.....I start hearing these noises and I turn my hearing aids off - problem goes away :-)))
AnswerID: 282671

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