New comer with question on clutch

[Matthew So]

Hi all,

I just got my hand on a 1996 993 C2 with 120k miles on the engine 2 weeks ago. Everything was working fine initially but I started to encounter moments when after I shifted my gears, I would tried to give more gas. At the moment, the engine would rev up but the car is not really accelerating.
At first I thought its related to operation temp, so I tried again today and the same thing happened twice today. Everything is smooth when I drive with ease (easy on gas, shift gear around 3k rpm), but once I want to drive harder the same thing happen.
I suspect either the clutch started to slip (no record of clutch replacement, so it is very likely), or maybe the rear main seal is leaking oil into the clutch causing slipping (how to check?). I did a stall test on flat surface by releasing the clutch without giving gas while gear is engaged, and this does stalled the engine.
Any suggestion on what should I check?

Regards,
Matthew

[JFP in PA]

First of all, welcome to RennTech 

The clutch is either slipping or it isn't; there are no in between on this.  Regardless of why, you need to pull the car apart and look at it to see what kind of condition it is in.  Then you will start the "while you are in there" items like the RMS, IMS bearing, and AOS unit; all items that would require either pulling it back apart down the road, or in the case of the AOS, several hours of tedious effort to replace a device that could have been done in about 5 min. while you had the trans out.

 

Good luck.

[A. C. E.]

On 2/5/2021 at 2:43 PM, JFP in PA said:

Then you will start the "while you are in there" items like the RMS, IMS bearing, and AOS unit...

 

This is a 993. IMS bearing? AOS unit?

 

I think you are thinking 996, 997.

[JFP in PA]

Sorry, I had a "momentary brain fart" on this one!  For some reason I saw "996" instead of "993", possibly "old timer's" disease setting in...............🥵