If a squeal, chirp or sqeak goes away when depressing the clutch pedal - and the noise reappears once the clutch is disengaged - 99% of the time, yes, it's a throw out bearing issue.
When you installed the new TOB - which brand was it - and was it an all steel TOB or not?
Did you lube the following areas:
Clutch fork where TOB is inserted
top of clutch fork pivot ball stud
TOB bearing retainer on front of tranny where TOB rides
add any additional lube or grease to the TOB (some come packed well, others not so good)
The most recommended and best TOB to use is the Centerforce TOB. I never use the TOB's included w/ most clutch kits as 95% of the time they turn out to be duds that need to be replaced prematurely (squealing, chirping, squeaks). My CF TOB has been in the Cobra for many years now, never an issue, never a sound.
Timken used to have nice TOB's (when they were 100% all steel), but as far as I know, the last Timken TOB I had seen, they are no longer comprised of all steel, they have plastic bodies now (cost savings I guess). The rest of their bearing line up is excellent, but I'll never buy another of their TOBs unless they go back to the old style.
1994 Cobra coupe SVT #0013, 2016 Mustang Fastback Premium EB/PP
Last edited by Cobra Jet NJ; 02-16-2011 at 10:40 AM.