First and Second gear lurching/kangaroo... change the cdv?

H

Hark

Active member
Only had the car since Sat (Z4MR) but pulling away is doing my but at the moment.

Sometimes I get it perfect, but regularly I get seem to get the bite completely wrong and the car kangaroos away from the junction, or it over revs and the rear trys to kick. Doesn't seem any pattern as to when I am doing it right and when I stuff it.

Feel like a bloody novice but been driving many years.

Does removing this CDV smooth out the gear change?

Anyone completed the change in the midlands, or know anywhere local that could do it. Sounds a small job, but as I say I've had the car 5 days. :roll:
 
It took me about 500 miles before I could stop the kangarooing so I'd give it a bit of time, not that changing the CDV is a bad thing, but you might not need to.
 
Wondermike said:
It took me about 500 miles before I could stop the kangarooing so I'd give it a bit of time, not that changing the CDV is a bad thing, but you might not need to.
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+1

Although it took me more than 500 miles!I haven't changed the CDV and don't really think i need to now.

Don't rush the 1st -> 2nd shift.
 
it took me a while to get used to it - the cdv doesn't seem to like the clutch being released quickly, so you must ease it off. which is a problem for me when pushing the car. :driving:

ill be getting rid of my CDV next time i get a service or the clutch/brake fluid changed!
 
Annoying isn't it. Only truly a problem if the car is cold though. Not to say it doesn't still happen but much worse from cold. I'm going to do the CDV soon as if it is any better then it would have been worthwhile. :)
 
Hi mate.

When is your car due for an mot? Simply print of instructions for where the CDv is. Pop in before mot to ask if they can do it for you.

Best to find a garage that also does mot and understands cars lol. Get them to remove it and bleed clutch. It's so easy to locate and do.

Your car will be on their four poster anyway so easy access.

The guy who did my mot took 5-10 mins to do it and charged me £5 on my mot bill, job done.

It's a piece of pi## to do!

Steve
 
Hark, you get used to it soon enough and even with the CDV installed you wont kangaroo it after a few hundred miles, i removed mine altogether after a couple of thousand miles of driving it and frankly you'd be hard pressed to tell the difference, in non-M's the difference is much more pronounced though.
 
Thats all fine about after 500 miles or so but what if you drive another car too......

Its a stupid Valve that should never have been put on if the drive cant control a normal clutch they should have the car....... :driving:
 
PaulN said:
Thats all fine about after 500 miles or so but what if you drive another car too......

Its a stupid Valve that should never have been put on if the drive cant control a normal clutch they should have the car....... :driving:
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Does not compute :?
 
I've bought a new valve, and modified it ready to do when it gets a bit warmer - my garage is like an ice box just now!

However, when I went to the dealer to to buy the valve - the parts dept. manager pissed himself laughing when I told him what I was going to do with it. :oops:
He said something like "I've driven every BMW in the book and I've never felt the need to do anything like that!" :?
 
MalcZ4 said:
I've bought a new valve, and modified it ready to do when it gets a bit warmer - my garage is like an ice box just now!

However, when I went to the dealer to to buy the valve - the parts dept. manager pissed himself laughing when I told him what I was going to do with it. :oops:
He said something like "I've driven every BMW in the book and I've never felt the need to do anything like that!" :?
Click to expand...

I wouldn't worry about the parts manager's comments. In my experience they do not have a clue what they're on about :evil: seriously
 
This is on a 3.0si, but I first noticed the CDV effect when going along at less than 10mph in first at constant speed, put the clutch in while lifting the accel (as if to change gear), but was actually slowing for a speed bump, the delayed disengagement was causing a learner driver forward lunge everytime. Very embarassing. Found that adapting the timing of my right foot and for 1>2 changes preloading the shifter slightly was the fix. Almost feels like flatshifting because the right foot is still on it it when the left is halfway down, then the left is coming up almost before the actual shift is complete. Basically I delay my right foot relative to the left. Why they put a CDV in there I don't know. :thumbsdown:
 
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