What's that sound? (NOT A GAME)

[jhiace Senior Member Find all posts View Profile Close jhiace]

Hey guys,

A few weeks ago i noticed a 'whine' kind of sound coming from the front end of the Prado, when i took it to my mechanic for its major 160k service i mentioned it and he couldn't see or hear anything (noise is every now and then).

Today after driving 2 hours home when i pulled in the driveway i could hear the same whine again so this time i took a quick recording of what it sounds like hoping someone may be able to shed some light so i can get this fixed. The sound seems to me like it it coming from the front of the engine and is loudest when you are under say the bashplate at the front. The recording i took is from under the bash plate and then moves to near the grill. I don't know if its the fan as im not an expert on this stuff but its something that happens pretty sporatically so it has me stuffed..

Please have a listen and hopefully someone could help me..

(i didn't post this in the 120 section as i wanted it noticed and hopefully someone with OR without 120 can help me)



Click the black box above and it will take you to photobucket where video is hosted. At the 0:07 mark is where the noise is really obvious.
Thankyou.

[berniebgf Senior Member Find all posts View Profile Close berniebgf]

Is it the "clicking"noise? very faint @ :07.

Bernie.

[jhiace Senior Member Find all posts View Profile Close jhiace]

no, its the sound that is quite prominent the whole way through now that i listen to it again. It may kind of sound like just the engine running but if you listen a few times it isn't.. Its probably no more obvious at 0:07 then it is from the start but it is basically the first noise you can hear.

I did record a much longer one as a voice memo on my phone, does anyone know where to host those to post up?

[SWR Banned Find all posts View Profile Close SWR]

Gday jhiace

It sorta sounds like the A/C compressor?

Try with A/C then switch it off!

Cheers

[jhiace Senior Member Find all posts View Profile Close jhiace]

I checked a/c first and with it both on and off it made no difference. It is idle affected though

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

Obviously, us old fellas with damaged hearing (courtesy of Australian Defence Force in my case) can't hear any whining at all amongst that noise! Sorry, can't help.

[jhiace Senior Member Find all posts View Profile Close jhiace]

Dave, the noise is the whine.. I agree it's hard because of the engine running but it has to.

If any of you are familiar with the old commodore whine vn - vt then it sounds the same as that!

[Corigator Avid PP Poster! Find all posts View Profile Close Corigator]

In the commodore it would be the viscous fan stuffed. Not sure in the Prado

[jhiace Senior Member Find all posts View Profile Close jhiace]

My thoughts were that it was the fan...

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

Serpentine belts can also whine a bit, especially when new.

[jhiace Senior Member Find all posts View Profile Close jhiace]

Dropped into the mechanics this arfternoon and it looks like its a bearing in one of the belt pulleys.. Going in in Wednesday to find out which one it is.

[Octane94 Member Find all posts View Profile Close Octane94]

Jhiace, does it only happen at idle?

[ntp Addicted PP Member Find all posts View Profile Close ntp]

Glad to hear you've hopefully found a fix.

[jhiace Senior Member Find all posts View Profile Close jhiace]

Octane, no it happens all the time and gets louder with revs..

Hopefully it's not an expensive fix

[jhiace Senior Member Find all posts View Profile Close jhiace]

Took the prado to the mechanic today. The plan was to drop the belt and check the pulleys to find the faulty one, nothing! Not a peep out of then. They then discovered a small leak from the water pump so figured that must be it. After a few hinder dollars were spent the water pump was replaced and alas not the problem. Not very happy about it so now to try somewhere new.. They seem to think its coming from the passenger side of the motor and they reckon its the a/c compressor or alternator... The sound is much worse today, even before going to the mechanic..