when i am in 4th or 5th gear a press the accelorator to speed up from 60 to 70ish around 3k rpm it jumps in rpm then goes back down and slowly goes back up as i accelorate

and sometimes when i hold the pedal something underneath the dash clicks, could it be some kind of throttle sensor or something
what do you guys think it is?

http://s1213.beta.photobucket.com/us...cc944.mp4.html

 

right in the begining of the video you can see the rpm go up pretty high, the second one not much. both are in 5th gear and 60-70

 

It only does it in 4th and 5th? If so then it's your clutch slipping... When in higher gears it puts more load on your engine.

 

yeah only 4,5 but when im in third at sixty and punch it through 3 and 4 its fine. i was thinking it was the clutch since it has 70k miles and didnt see a clutch job in records that of which all oil changes were seen in records


where you able to see the video?

 

It is really hard to tell from the video, but if your rpm increases quickly only in the higher gears and then falls back it is a slipping clutch.

It feels exactly like the car's acceleration hesitates, because it does.

 

**** this.. at leased its not too bad yet it can wait i really want to get wheels and suspension ahaha

 

You have a week, maybe two, before it is not drive able.

 

It could be your clutch, but have you looked and verified whether you a tear/kink on your boost lines, vaccum lines. I'd start with the actuator- the diapharm could be going out.

 

Yeah, if its the clutch going out you really don't have much time till it will start doing it at low speeds in low gears. The 1st time I had to change my clutch out it started like this and about a week or so later (when my new clutch came in) I could barely get the car to the mechanic to get it put in, had to drive like a prius and never let the revs get over 3k.

 

Can you wreck the flywheel by driving on a bad clutch?

 

I looked again at the video on my computer instead of my phone.

It's definitely the clutch. Look no further.

I've had an ACT 2900HD and their Prolite flywheel in for 45,000 miles of track days, stop and go, and about 180+ autocross launches. It's still holding, but will be replaced soon when I fix my 5th gear synchro.

Good luck with yours.

 

I despise these clutch threads because there's always so much generally misinterpreted info.

1. That COULD be the clutch, BUT... you shouldn't be doing a hard pull in a high gear (4th or 5th).
2. People always say that the best way to test your clutch going bad is to put the car into a high gear, and see if the clutch slips. No. Do not do this.

If you don't drive your car that way (and you shouldn't) then why would it matter if your clutch is slipping in those gears? If your clutch isn't slipping in day to day use, then your clutch isn't bad.

Clutches are wear items. The second they first heat up against a flywheel when they're brand new after break in, TECHNICALLY they have reduced gripping power. A perfectly good clutch with a strange set of gearing could be completely useless.

ANYWAY... my point is... if you know how to drive a vehicle, a clutch that is "going bad" probably shouldn't ever be an issue. There will of course come a point in which the clutch isn't drivable, or become undrivable for your tastes. You certainly shouldn't be doing hard pulls or launches on a clutch thats going out... Some of the advice is well meant, but it doesn't give the OP the logical information they should have in order to make an educated decision on what they're doing. /soapbox

 

To the point however...

That video doesn't really show much though. It appears that your RPM goes up about 500 RPM? But that isn't indicative of a slipping clutch.

More to the point, what's this clicking you mention?

If I could make a suggestion for a video, it would be to have the car running at a stop, accelerate normally through all of your gears, announcing what gear the car is in each time, and then announce when and how you're about to replicate the problem, and then describe the problem when you see it.

Like, I'm in 5th, I'm giving x % throttle, and THERE you see, the RPM's just jumped 500rpm, and I got nervous so I let off the throttle.

Make sense?

If you need a good reference for a slipping clutch video, shoot me a PM, and I'll link you to my clutch slipping at the track. It's much more obvious than that.

Also, no... driving with a slipping clutch will not harm the flywheel. Either way, you'll want to resurface the flywheel during a clutch install.

Hope that helps a bit

 

I watched the video but didn't learn much about what is wrong with your car. On the other hand, if it is the clutch, it will get worse. You'll know.

 

I don't want to fall into the "generally misinterpreted info" trap, so I'll ask about what you've written above. I'm afraid either I don't understand what you've written or you don't understand clutches. One can't accelerate through 4th and 5th gears? Is that what I'm understanding you to say?

I can assure you that all cars are designed to pull hard in 4th and 5th gears, and should do so without problem- unless their clutch is excessively worn, improperly installed, or incorrectly chosen for the vehicle. If you want to know if your clutch falls into this group, you SHOULD accelerate hard in a high gear, preferably on a grade. This is how you tell if a clutch is going bad.

I'm sure your advance is 'well meant', but I'm not at all sure it's accurate. You said..."a clutch that is "going bad" probably shouldn't ever be an issue"; what does that mean?

One would want to know if their clutch was going bad. When they start slipping in higher gears, they very quickly start slipping all the time. They become inoperable when that happens.

I think that you should make sure that your facts are right before you suggest other's may not be. Or maybe I just don't understand.