perrin pulley causing noise when shifting?

[FR-S Matt]

Originally Posted by Foobar

I have a Perrin lightweight pulley and no honking between shifts, so I don't think that's the culprit.

Have the Perrin Pulley installed as well and had it on for 5 days now. No change in sound on shifting or anything.

[ST185RC]

Originally Posted by ATL BRZ

First the crickets, now ducks quacking....

Brings out the animals in our cars.

[garf]

pretty sure its metal on metal rubbing in the transmission, maybe the throwout bearing going bad, i can replicate it now sitting in neutral with the clutch pressed in and reving the engine so im going to toyota fri and see what they say.

[Gopherboy6956]

Originally Posted by garf

pretty sure its metal on metal rubbing in the transmission, maybe the throwout bearing going bad, i can replicate it now sitting in neutral with the clutch pressed in and reving the engine so im going to toyota fri and see what they say.

Keep us posted!

[Fenrir]

[ame="http://en.wikipedia.org/wiki/Clutch_delay_valve"]Clutch delay valve - Wikipedia, the free encyclopedia[/ame]

There's a few other threads about this. Means you're slipping the clutch and not shifting smoothly

[Gopherboy6956]

I don't understand how that would make a chirping noise though... I can dump the clutch and we're good to go... I can shift nice and we're good to go... sometimes.

But, that inbetween area.... you might be on to something.

[Fenrir]

The valve is designed to avoid extremely harsh engagement of the clutch. When the clutch is being slipped, there's backpressure being pushed on the valve which causes it to make the quacking or humming noise.