Outer Limits 4x4 Board

i drove my sierra 1.3 from townsville to mundubbera last thursday - 1400km's in 14hrs roughly..on the way down i noticed this howling noise under the bonnet, kept driving hoping it would go away it did but came back worse i was on the marlborough stretch in the middle of nowhere when i decided to pull over n have a check what the noise was and it was LOUD!! it sounded as though something was loose and grinding inside something..i thought it was a pully but they all seemed tight...it was loud when idling even louder n worse when i rev'd it. couldnt seem to find anything broken or damaged, fan belt was tight and NOT slipping..

(besides the bottom radiator hose had bulgded out almost to burst - undid it and slid it up further on the pump shaft n tightend it again. fixed for now).

so as i couldnt find where the noise was comming from i assumed it was a pully bearing? or somewhere near there? pump shaft? alternator? i just got in and drove the rest of the trip on the hope nothing would go wrong and id get home ok..which i did the noise went away again and hasnt returned..although i can still hear that its making a howling noise from the engine still.........


got me stuffed i have no clue what it is...

These aren't that expensive, they work better with a trained ear though, as everything sounds stuffed (watch out for spinning parts )



Peter.

yeah thats what i thought of i couldnt remember what they were lol i cant pin point the noise so thats what i need

So after replacing the timing cover on the Sierra, I found where the noise was comming from - alternator bearing shit its self...still works but will need replacing asap! 110amp falcon upgrade =D

Yeh thats the first thing when trying to find a noise in engine. Disconnect the belt, as engine runs fine without it, and you can then establish its not water pump or alternator.

yeah as found out alternator pully is loose and has fair bit of movement!! it still spins freely-ish but i will replace it with the 110amp falcon alternator..