BAD cluncking 3rd to 2nd
 

Ok here is the deal 89 s2 with 75K miles.
new clutch with in last 3K ( dec 2009)
VERY reputable private shop which always has 5-10 944 being worked on

Ok I have been having louder than usual noise at low speed ( 2000-3000rpm)
in 1st & 2nd when I have been letting off the gas and let the engine break the car
But I took it back to the shop and was told all as A Ok
I wrote it off to new sounds due to spring clutch vs rubber
BTW the shop wrote it off to loose heat shield

Now DE season is upon us so I took of the 16 rims with snows and put on the 17s with high performance summer

I was in second coming down from 3rd
clutch in, as in left foot down /disengaged, RPMs at 1000, speed 20 or 30 mph coasting up to a turn lifted my foot off the clutch and

BANG, BANG sounded like and felt like wheel hop ??
I put the foot on the clutch and picked 3rd with no issue

when I speed match/ heel toe/ blip the accelerator on down shifts /.... what ever you want to call it on down shifts, no issue

no issue on any up-shifts
no issue on any down shifts except 3 to 2


any advice ?
ideas ?
questions ?

Possibly a bad synchro?

Don't know if i had the same problem but:
i have like a gla-gla-gla or zuu-zuu-zuu every time(not every time but near) i depress the pedal gas usually in 2,3 gear but sometimes in 5---i look the clutch,change the transmision oil,grease the JV joints....nothing
I was near to change the transmission.....

recently i broke the time belt(broken water pump),so i did a head job,front seals,timing,fidanza flywheel and see that one torque tube bearing is bed.
i decide to change all the four bearings and the two inner ones are in terrible condition.
strange:i don't heard any noise in neutral gear(torque tube bearing sinptom)

Now the car is like new!No rattle,cluntch,is like fixed!So the torque tube bearing after 20/25 years are not perfect....

i hope you resolve your problem