I have a 08 with just under 12k miles on it. After sitting all night and when I am on the highway driving it and give it gas to try to accelerate [usually around 3.2k RPMs the RPMs will jump by about 1200 and then just as quickly they will drop down to around they were when I first gave it gas and then climb as normal.

Then, if I give it gas again, the RPMs will jump but not as much. The more that I do it, the less the RPMs jump.

Any ideas on what could be causing this?

The dealer wants to drop the trans to inspect it but if it is found to be just a worn disc I will need to come up with $180 for the disassembly to cover the tech's time. If it turns out to be a worn disc, I wouldn't want to pay the dealer labor rates for install of a new clutch.

What are the chances that it is just the disc that is worn?

Thanks!

 

clutch going out, buy a aftermarket and get it installed.

 

+1 - your clutch is slipping.

STOP driving it. When you let it slip under load like that you will very quickly overheat the pressure plate and flywheel surfaces. And more parts to be replaced means MUCH more $$.

 

Thanks for the replies.

My theory is that there is a seal leaking oil onto the clutch disc causing it to slip. That would explain why is gets better rather than worse the more I drive it: Because the oil gets worn off and allows the clutch to grab better.

 

You will also se that result as the friction material goes completely away and the grabbing is on the rivits and metal backing plates of the disc.

There are not many places that can leak oil onto the clutch friction surfaces.

 

and you shouldnt have to rev it up that high to get the car moving..

 

Sorry if I wasn't clear, I don't have to rev it to get it going from a stop. It slips when I am already moving like on the highway and give it gas to go faster.

 

o ok, but yea this is a sign that your clutch is slipping.

 

But wouldn't it continue to slip throughout the RPMs? It seems to slip LESS the longer I drive it.

 

Here's a picture:


It doesn't look as bad as some that I have seen. There appears to be just a little oil in the hole I don't know if that came from the leak above or not.

 

dude its not the oil its your clutch going out

 

mine just started doing the same thing. I have about 25,000 on mine. crappy clutch they dont take much abuse.

 

accelerate to about 20-25mph and throw it in 5th and floor it, if your clutch is good then the rpms will rise slowly, but if its bad then itll just slip like crazy

 

yeah its not the greatest, but i did have to laugh after reading your post and then seeing your mod list and numbers, lol, cant expect the stocker to last long at 400ftlbs

 

time for a new clutch!