Thought I would add to this thread. I had this problem after installing a LUK clutch and as described would be most noticeable when doing a high RPM 1 to 2nd pull. Often could not shift to 2nd.

I had my fluid changed and bled a couple of times.

I also noticed it would happen on my commute home on a hot day. I would exit the freeway after about 40 minutes driving at 60 MPH and go to gear down and no clutch.

The way I would 'fix' this once I knew it was going to happen or started feeling a 'low' pedal engagement was to push the pedal down and slip my foot off allowing the pedal to 'snap' back.

After doing this I would get back to normal operation.

When I put in the GMPP I also installed a stainless line.

I had attributed it to the stock clutch line being soft and perhaps flexing? Could be that going to the GMPP resolved the issue.

Only thing I can say is it was one of the most annoying things until I got it fixed.

 

Where did u get the stainless line

 

I had this problem. Brake fluid was black. Flushed it out now no problems at all. So definitely check your fluid first

 

Ya I'm gonna try flushing clutch, I did the brake fluid a year ago, but I also changed a caliper a month ago so I could still have air in the system. I shall try both these things and see what it does.

 

THMotorsports. They are a supporting vendor.

 

Can't find it on their site. I'll have to pm. What u pay for it?

 

65 shipped. Just google stainless clutch line mth motorsports cobalt

 

I got f35 tranny, that one is for f23

 

According to their post it is for F35 they were trying to make it for f23 but no one sent their stock line in for R&D

 

https://www.cobaltss.net/forums/supporting-vendor-deals-group-purchases-133/thmotorsports-stainless-steel-clutch-line-kit-no-one-else-one-finally-out-283322/