Pinto Whistling Noise

[GambolGold]

It used to be an occasional quirk but now, once the engine is up to temperature and the car is moving and the engine under some load, there seems to be a whistling sound from somewhere. It is at a constant pitch irrespective of road or engine speed. It stops when I slow down. Does anyone have any idea what could be causing this. I though it could be radiator cap but I changed this - no change to the sound. Thanks for reading.

[brumster]

Is it definitely engine-related, ie. if you dip the clutch it's still there? If you turn the engine off and coast, does it disappear? You say under load - if you go to a trailing throttle does it disappear?

[GambolGold]

Dip the clutch or coast, the sound goes down.

Edited June 22, 2018 by GambolGold

[brumster]

Could it be some bearing, maybe on the cam/fan belt, alternator bearing, something like that.... viscous fan maybe....? I take it it doesn't do it at a standstill which is what's making it difficult to diagnose?

 

Gawd, could be a plethora of things I suppose... :-S

[kevin the chicken]

My wife's honda crv developed a whistling noise and the ignition warning light would occasionally flicker. I took it in to the garage and they tested it and said there was nothing wrong with it. I thought there was a bad smell to it as well but again they said they couldn't find anything. A week later the charge light came on and stayed on. Changed it and smell and noise went and light went out.

[brumster]

Changed it

 

Changed what the Honda CRV? That's one definite cure, I'll give you

[kevin the chicken]

No the alternator, I'm not that well off.

[Andi]

Can you post a video link up

[Longboarder]

Whistle under load, reduces if load off but car still moving, revs much the same, speed the same suggests intake or exhaust leak to me. I would go through the intake system first checking all joints and gaskets including servo pipe if you have one.

[GambolGold]

Correct Longboarder. Thanks for the replies. I shall make a video /audio recording and check for induction leaks.

[Andi]

I had an intake leak from the bike carbs. Sounded like an annoying birds tweet. Drove me mad till I got it home