NewHilux.net

So I've just noticed a rattle coming from the front of the engine. Sounds like it is coming from around the pulleys/radiator fan section. It doesn't sound like a pulley that's on the way out and it is not constant more rattly.

Also only happens when engine is warm. I turned off the ute for 15 while I cleaned up some stuff and turned it back on and it didn't make the noise but after a min or 2 of the engine being on you could slowly start to hear it come back. Got me stumped.

Utes an 06 sr 1kd always serviced. Just did a full service 4k ago.

I can fix almost anything but diagnosing the problem is the hard part.

Thanks in advance

Mic

How many Kms?
Once you get up into the 200K and up there's a whole host of things at the front that can make strange noises.
Idler pulley bearings, A/C bearing, alternator bearing, loose front crank pulley/harmonic balancer.
Cam belt and drive belt tensioners can make a knocking/rattle noise too. My drive belt tensioner was making a knocking noise, but only when cold.

Take the belt off and run it for a sec and see if it gone.

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Only has 110k on it but the belt does squeak when it's a cold Morning.

Was going to put a new belt on so I'll run it for a sec when I have it off

When ya take it off just give everything a spin by hand, ya mite find something straight up.

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So basically look/feel for a pulley that doesn't spin freely or makes a noise?

Yep!

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Hey my 2011 d4d has developed a rattle at idle, it’s fine when it’s cold but when the engine is warmed up it starts, I replaced the serpentine belt,both idler pulleys and tensioner pulley, but still does it, if I put some pressure on the tensioner arm while motor is idling the noise disappears,
Any ideas would be greatly appreciated,
If I remove the belt the noise is not there,
Thanks again

Threads merged
Have a search in the corresponding generation section to start with
Let us know how you go

Have looked at all relevant pages will try and contact mixo6lux, to see if he got his problem rectified thanks,

Hi
So when engine is warm and at idle I have a rattle on my 2011 d4d, I have changed the serpentine belt, both idler pulleys, the tensioner pulley, the rattle is still there. If I put a little pressure on the tensioner arm when at idle the noise disappears,
Have browsed the forum a few members have had this issue but never seemed to solve the issue,
Any ideas would be greatly appreciated,
Thanks

Read my post further up the page Streety, last sentence