RPMs bogging down during hard acceleration, Help Plz!!

[Hornung418]

Clutch fo sho!

[wsmeyer]

Clutch slippage is when the pressure plate can not provide enough force to lock the disc to the flywheel and transfer the rotational force of the flywheel, which is attached to the engine, to the clutch disc that is attached to the transmission. When this happens the engine revs spike. Which is EXACTLY THE OPPOSITE of what he is experiencing.

William.

[Hornung418]

So what's your expert opinion, Webster?

Either way his car is bogging down, which would make it clutch related if it revs fine when completely engaged and when disengaged.

Azkotik, go a head and clean your MAF just for shits and see if your problem is any better.

[danewilson77]

So what's your expert opinion, Webster?

Either way his car is bogging down, which would make it clutch related if it revs fine when completely engaged and when disengaged.

Azkotik, go a head and clean your MAF just for shits and see if your problem is any better.

Or unplug It.

HTC Thunderbolt+TT

[wsmeyer]

So what's your expert opinion, Webster?

Either way his car is bogging down, which would make it clutch related if it revs fine when completely engaged and when disengaged.

Azkotik, go a head and clean your MAF just for shits and see if your problem is any better.

I was trying to explain it as simple as possible so that you could understand it and realize on your own that his clutch is not slipping. Apparently I didn't do a very good job so we'll try this again.

Under acceleration, the clutch transfers torque from the engine to the transmission. Under de-acceleration, it transfers torque from the transmission to the engine. Under NO SITUATION* does it magically generate any force of it's own and therefore CANNOT cause an engine to bog down.

William.

* if your throwout bearing freezes it will generate a slight amount of friction but you would know if this happened as it would self destruct in a matter of seconds.

[danewilson77]

Keep it civil. I'm out. Guess I don't understand.

HTC Thunderbolt+TT

[az3579]

I would start by getting that check engine light code read.
It for sure sounds like there is some serious clutch slippage here, and I seriously doubt it's from driver error as it happens on every single shift, and I've never seen someone consistently do that. I actually don't see any power dipping going on, it just looks like the clutch is slipping to a point where it's not transferring that power correctly. A slipping clutch will not be transferring all the power the engine has to offer, which may very well result in decreased performance. Either way, if that's not driver error, I wouldn't drive it like that and would have the clutch inspected ASAP.

I did notice something that may seem like something the OP is doing wrong though; at 20 seconds, you see the revs rise right before falling back down again for a shift change. OP, did you have someone else drive your car and see if the problem is still evident for them? Are you sure it's not something you're doing wrong with the shifts? Every time I come back to think about it, the first thing I'm thinking is "slipping clutch". I'd be reeeeally curious as to what this is if that's not it, and am itching to learn something.

[Oli77]

CDV deleted or not (could be that simple)?. But like wsmeyer, if clutch was slipping, RMP would go up fast.

[az3579]

CDV deleted or not (could be that simple)?. But like wsmeyer, if clutch was slipping, RMP would go up fast.

So I'm confused; if it's not the clutch, why does it look like one is slipping the clutch while giving it throttle?
The only people I've seen do that are people just starting to drive a manual... I seriously doubt the OP is just learning how to drive a stick.

What other potential causes could there be to that particular behaviour? Because I'm not sitting in the car, I don't see any power bogging, only the behaviour of what looks like clutch slippage. Would you have any insight on this Oli?

[Johnmadd]

The slip is the hi rev and the dip in rpms is when it engages fully, or as much as a worn clutch can. Think of doing a burnout and tires, the tires slip until they grab and as that happens the rpms go high until they grab then the rpms go lower. Make sense?