Hi Guys

Last night while driving the ST170 home from work, when I accelerated away from the lights the throttle pedal stuck down on full throttle, it then released and seemed fine again. At the next roundabout I floored it and it stuck again !
Driving it gently throttle is fine, when I got home I gave it a couple of revs and the peddle stayed down on full revs, then released.
When the car was cold later in the evening took it for a run and all seemed fine, cant get it to stick.
I took the cable out and it seems fine.
This morning driving it to work it was fine untill the engine got hot and then started to stick again.
Should I replace the cable ?

 

It sounds like somthing at the throtle body end to me, does it stick open with the engine off?

 

No, only sticks when engine is hot and running, I thought maybe the heat is affecting the cable, if that makes sense.

 

Maybe the heat could be causing the butterfly flap on the TB to expand and then stick?

 

Would that keep the peddle down ?

 

Oops! I should read posts better...

No, I doubt it would. The Cable is most likely "pulling" the flap open, so if the flap stuck, it would just bunch up the cable and not pull the pedal down, if that makes sense?

 

Yep makes sense, I've ordered a new cable £63 !!!! so will try that and let you know if it works

 

£63?! Jesus!

I hope for you it works, especially at that price!