When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
To start, I have a 1988 IROC 305 stock 5-speed which I purchased about 3 years ago. At that time I went through it, pulled the transmission and replaced the clutch. Ever since then I've been having an issue where once the car got warm there would be a squeaking noise that appeared to be coming from the throw out bearing. The noise would stop as soon as I would touch the clutch pedal without depressing it. I have replaced the throw out bearing twice and this continues to be the same problem. I took it to a shop and they can't figure it out. Everybody is confused about what's going on. Any help here would be appreciated. Any chance the clutch in there might just be wrong causing this issue?
Did you lube and or replace the fork and the pivot ball?
Originally Posted by 2names
Yes forgot to mention, fork was replaced and the pivot ball is really hard to find so the shop rebuilt it.
Probably some pivot point dry and needing lube. I have 2 standard transmission cars that have a mild case of this. Not enough noise to bug me into tearing it all apart for a little grease and I just tune it out or turn up the radio. Part of driving a 30+ year old vehicle, unless you like constantly tinkering with your car.
Did you change the slave cylinder or remove the plastic cap off of the tip of the plunger of the slave? When you cut the straps that hold the plunger back, the plunger pops out and into the indentation in the fork, and that plastic cap insulates the tip to prevent metal-to-metal contact against the fork. If the cap is gone or worn through, then that contact point might be the source of the chirping.
With the engine running, lay under the car and touch the fork, slight pressure should do it, like when you put your foot on the pedal, and see if the chirping stops. If that solves the problem, then a bit of heavy grease there might help. If the cap is intact and not worth through, and touching it solves the problem, then the vibration would likely be coming from inside the bellhousing, like maybe the fork on the pivot ball, or maybe the fork isn't attached to the bearing correctly.
I had that chirping for years, but it always went away if I touched my foot to the pedal. When I finally looked for the issue, I could see the plunger vibrating against the fork; the tip of the plunger had worn through the cap. I put slight pressure on the fork with my hand, and the noise stopped. When the slave eventually blew, and I installed a new one, there was no more chirping, due to having a full cap on the tip of the plunger again.
Did you change the slave cylinder or remove the plastic cap off of the tip of the plunger of the slave? When you cut the straps that hold the plunger back, the plunger pops out and into the indentation in the fork, and that plastic cap insulates the tip to prevent metal-to-metal contact against the fork. If the cap is gone or worn through, then that contact point might be the source of the chirping.
With the engine running, lay under the car and touch the fork, slight pressure should do it, like when you put your foot on the pedal, and see if the chirping stops. If that solves the problem, then a bit of heavy grease there might help. If the cap is intact and not worth through, and touching it solves the problem, then the vibration would likely be coming from inside the bellhousing, like maybe the fork on the pivot ball, or maybe the fork isn't attached to the bearing correctly.
I had that chirping for years, but it always went away if I touched my foot to the pedal. When I finally looked for the issue, I could see the plunger vibrating against the fork; the tip of the plunger had worn through the cap. I put slight pressure on the fork with my hand, and the noise stopped. When the slave eventually blew, and I installed a new one, there was no more chirping, due to having a full cap on the tip of the plunger again.
