Excessive revving

[Aandytvr1]

Gents , ladies .

Can you help , whilst out today in the 4.0 griff pre cat , went to overtake , pushed foot down hard and the car revved very hard rev counter up to 6,000 (phew) the car pulled away at immense speed . I dropped the clutch , still excessive revs , eventually revs returned to normal ( slight bottom twitch ) carried on then as normal

Any ideas

Cable sticking etc or what ...??

Your thoughts wpuld be very much appreciated
Ps removed the old Bridgestone Potenzas (10 year old) replaced with new shoes TOYO one word "wow"

Andy

[BliarOut]

Dunno your exact prob but check your throttle return springs, we lost one to a failed spring recently

[dumbfunk]

+1

Had this happen once coming off a motorway and the second throttle spring (that had just been fitted - not all cars had them) was catching on the bracket. Removed it - no issues in the 3 years since.

[Aandytvr1]

Did I read right , you removed the spring , as I look at mine there is two
One large
One v small

Which one and would it not interfere with the set up

By the way guys , big thanks for your responses

Andy

Edited by Aandytvr1 on Saturday 19th November 16:17

[dumbfunk]

From memory my two springs were the same size. The car was supplied with one throttle spring from the factory and after a few years a helpful service agent added a second as a belt/braces. Obviously it didn't work so we removed it and the car's fine without.

My car is a '98 and it sounds like your has a different arrangement fitted - not unusual with hand made cars I guess. In this case it makes sense to check absolutely everything is properly fitted and lubricated before you remove anything.

Did you consider the throttle cable by the way? could be frayed at either end and not returning smoothly?


Hope this helps?

[Aandytvr1]

Like all these things
Had to check ( getting cold out there now)

My car has one main spring , it seems the other one is not there ( other side)
The third spring is the little one
The cable moves fine , free and easy ( no stickiness)

[clive f]

are you wearing platform shoes?


I read somewhere they were worn in the seventies

[dumbfunk]

Ah, so you have the big long spring on the end of the cable and the smaller round spring around the pivot? Sounds the same setup as me so if it's all clean then the issue must be elsewhere - sorry I couldn't help more!

[anonymous-user]

Try the carpet in the foot well to the right of the pedal.
This happened to me and it was the carpet.

[Aandytvr1]

I must add I wasn't sure

But carpet seemed fine

[lazyitus]

Yeah - we got it the first time!!

[Aandytvr1]

Wierd that xx

[2 sMoKiN bArReLs]

How was the carpet?

[BliarOut]

Could it be the carpet?

[davemac250]

Check your main earth strap.

I had similar on a very different car.

All fine when checking with the engine off.

As soon as the engine (ignition) was on the car was earthing via the thrittle cable, heating the shroud and the throttle stuck.

I found out the hard way when the cable caught fire on the M3, luckily the car survived.