Rattle somewhere underneath
Submitted: Wednesday, Jul 20, 2005 at 15:37
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Member - Tonester (VIC)
Hoping for some thoughts here. Its a Prado, and a couple weeks back I heard a quiet rattle coming from underneath the truck. I wasn't in a position to crawl under, and I could not isolate the location of the rattle, seemed to come from different
places depending where I listened. Its quite intermittent, comes and goes, and is never there when I am able to crawl under the truck. I hear it rattle louder suddenly if I give it a quick rev. Best I can describe the sound, is like metal lightly touching the blades of a revolving fan (cept this noise doesn't appear to come from the front of vehicle). Thought perhaps a muffler baffle, but when I give them a whack by hand there's nothing.
Wondering what might be causing it, and if it needs looking at.
Reply By: Member - Phil G (SA) - Wednesday, Jul 20, 2005 at 16:09
Wednesday, Jul 20, 2005 at 16:09
I'm guessing its a V6 because the snorkels on the RHS.
Its fairly common for the two rear brackets holding the subtank guard to fatigue and break off. Usually happens after corrugations - the guys in the
Kimberley are pretty good at welding them.
Also
check the front sway bar chassis rubbers - if they are splayed out, then they are stuffed - best to replace them with polyurethane.
Also
check the rear shock absorber upper shroud - the factory ones can break around the top.
Cheers
Phil
AnswerID:
121319
Follow Up By: Member - Tonester (VIC) - Wednesday, Jul 20, 2005 at 16:21
Wednesday, Jul 20, 2005 at 16:21
Thanks Phil. Yes, V6 petrol. Will look at those things next available time in daylight.
FollowupID:
376390
Reply By: pheonix - Wednesday, Jul 20, 2005 at 16:36
Wednesday, Jul 20, 2005 at 16:36
Tonestar,
I have a 2000 RV TD Prado. Also at the moment I have a screeching noise coming from the vehicle. I thought it was the belts as it was happening when I de accelerated. I had all of the belts replaced last Friday. I still have the noise. The vehicle has been on hoists and there are no problems with the exhaust apparently either. I still think its something to do with the belts or pump, we'll see next Tuesday when it goes back.
If anyone has a good knowledge of these vehicles, I would be greatful of the heads up as it's driving me crazy.
Great
Forum, with some very interesting threads.
AnswerID:
121326
Follow Up By: Member - Phil G (SA) - Wednesday, Jul 20, 2005 at 19:51
Wednesday, Jul 20, 2005 at 19:51
Bit hard to know from the limited description of the noise.
Does it go away with light pressure on the clutch pedal?
If it was related to belts or water pump ot idler bearings, then I'd expect you should be able to tell by sticking an ear under the bonnet. Those noises are usually continuous.
Cheers
phil
FollowupID:
376448
Reply By: pheonix - Thursday, Jul 21, 2005 at 09:22
Thursday, Jul 21, 2005 at 09:22
Thanks for the replies, to your question Phil, if I depress the clutch a little bit it makes no difference, as soon as I put my foot on the acelerator the noise goes away. I was originally told it may be dirt/grit on the watsegate, but when I have spoken to a diesel turbo workshop they told me they very much doubt it. Even when I drove it this morning it still sounds like a belt screech/slipping to me.
When it gets warmer as its very coldddddddddddddd in Melb this morning I am going to get under the truck and look at what's been mentioned.
Thanks for the advice from everyone.
AnswerID:
121413
Follow Up By: Member - Tonester (VIC) - Thursday, Jul 21, 2005 at 11:47
Thursday, Jul 21, 2005 at 11:47
I'm glad my post could help you.
FollowupID:
376545
Follow Up By: Member - Phil G (SA) - Thursday, Jul 21, 2005 at 14:36
Thursday, Jul 21, 2005 at 14:36
While the motor's running, hold a bar of soap against the inside of the belt (be very very careful not to hurt yourself). That will eliminate any belt noise and tell you whether thats the cause.
Cheers
phil
FollowupID:
376562
Follow Up By: See You - Thursday, Jul 21, 2005 at 19:12
Thursday, Jul 21, 2005 at 19:12
Ignore the follow up above by Phil G (SA). This is the most dangerous thing to do with your fingers. My wife was an IC nurse at
Darwin for years before we met. She saw several people per month that had lost fingers in drive belts while soaping up their belts to stop noise.
If you must soap your belts, turn car off, remove keys and get the old soap from the bathroom (the bits that you usually push down the drain with your feet to save having to bend down in the shower) and lubricate the belts by hand. Put any left over chunks between the belt and pulley and it will eventually get squashed enough to be put over the whole belt in about 30 seconds of running.
Phil G you should be ashamed of yourself promoting such a dangerous activity on a public
forum. Spankings for you with a tapped whip antenna from all safety minded 4WD enthusiasts that live here.
You naughty naughty boy.
See You NT
FollowupID:
376611
Follow Up By: Member - Phil G (SA) - Thursday, Jul 21, 2005 at 19:46
Thursday, Jul 21, 2005 at 19:46
See You (NT),
You are absolutely correct. The thought did cross my miind while writing it, hence the bit in brackets. But yeah, should have suggested it with the motor off.
Hmmmm, ICU nurse in
Darwin. Better not tell you my occupation :-)))
Cheers
phil
FollowupID:
376619