rattleing post cooling system work

[pgboxters]

Can the thermostat rattle when car is idleing and hot is it normal or air bubble. Obviously just replaced coolant tank and pump not in that order and used vac fill and purge method. Thanks

[JFP in PA]

Can the thermostat rattle when car is idleing and hot is it normal or air bubble. Obviously just replaced coolant tank and pump not in that order and used vac fill and purge method. Thanks

 

The thermostat should not make any sound.

[Ahsai]

Could be just residual air trapped in the system. Have you tried driving the car with the bleeder valve open for a few days?

[pgboxters]

I did that once or twice. I have a clicking rattle sound from the water pump area. Could that be an idler pulley it was a little loose but seemed quiet?

[pgboxters]

This is the sound recorded near alternator with hatch open ie: loud rattling clacking noise.loosened the belt noise goes away.its a new Porsche water pump and belt

Edited July 10, 2014 by pgboxters

[Ahsai]

This is the sound recorded near alternator with hatch open

There's no attachment...

 

BTW, are you sure the sound is not from the water pump itself? The easiest way is to use a long screwdriver and put it between the suspected area and your ear. A mechanic stethoscope with a metal probe works really well too. http://www.autozone.com/autozone/accessories/OEM-Mechanic-s-stethoscope/_/N-255s?itemIdentifier=70131

Edited July 10, 2014 by Ahsai

[pgboxters]

Noise is definitely on the belt somewhere maybe from the power steering or contamination from anti freeze. it won't let me upload the vid

[Ahsai]

You can remove the belt and hand spin all the pulleys and see if they are gritty or rattling.

[pgboxters]

Did that all seem good. if I spray water on the crank pully the noise goes away that sounds like marbles

[pgboxters]

Alternator clutch was frozen in both directions.

[pgboxters]

[emoji2]

[Ahsai]

Solved?

[pgboxters]

Yes