REVS DROP RESPONSE TIME

[Avalanche]

Just changed the throttle cable on my 00 Tuscan and what a difference! The original cable was getting really ropey and dragging - could see the physical wear on it!
Now throttle is much more springy and "accurate". Would recommend anyone with an old cable to renew.

But!, I was expecting the new cable to make the revs drop a lot faster when coming off the gas/engaging clutch.. Revs used to drop like a brick (like that Speed12 revving video)if you see what I mean
Now it's much more slurred since
- a RR upgrade 3 yrs ago,
- new standard clutch fitted a year ago
It's better since changing the cable, but not up to expectations! Takes a couple of secs to come down from 5k to 1k, used to be in a flash.
Anyone got the same impression with theirs?
Will see at next UK service, but appreicate any ideas to correct in meantime...
cheers

[tempus]

Try disconnecting cable under the bonnet,rev it manually and see what response is like,if ok problem is in cable/pedal if not post again.Tempus

[Avalanche]

good idea - will do

[thegreengoblet]

Avalanche said:

Just changed the throttle cable on my 00 Tuscan and what a difference! The original cable was getting really ropey and dragging - could see the physical wear on it!
Now throttle is much more springy and "accurate". Would recommend anyone with an old cable to renew.

But!, I was expecting the new cable to make the revs drop a lot faster when coming off the gas/engaging clutch.. Revs used to drop like a brick (like that Speed12 revving video)if you see what I mean
Now it's much more slurred since
- a RR upgrade 3 yrs ago,
- new standard clutch fitted a year ago
It's better since changing the cable, but not up to expectations! Takes a couple of secs to come down from 5k to 1k, used to be in a flash.
Anyone got the same impression with theirs?
Will see at next UK service, but appreicate any ideas to correct in meantime...
cheers

Just changed my cable in the Cerb and similar with the revs. The throttle pedal is really tight with no slack and instant revs.
Thought that maybe the throttle is not shutting off completely but have had it checked by my Indie. I was thinking of blasting WD40 down the cable just in case there's some crud in the outer sheath?

Anyway, I'd be interested in your findings.

[sjwb]

Not being familiar with TVR engine management specifics I can only comment on the 'normal' approach.
Simply put, your ECM will dictate the rate of crank speed decay based on the tune developed to minimize driveline shunt and over-run harshness. The throttle butterfly against the stop does not control idle or dash-pot effect, these jobs are reserved for the ICV (idle control valve).
Hope this helps and saves a couple of cans of WD 40!

[brogenville]

Dont know about the speed six, but I know that the AJPV8 doesn't have an ICV.

[Whitey]

I had sticking throttle body butterflies that caused this problem.

[rev-erend]

Don't think the speed 6 has idle control valve .. think it uses advance retard control..

It has 6 throttle bodies - so idea is pretty good.

Worth checking all the throttle return springs are OK..