Sticking accelarator pedal.
Sticking accelarator pedal.
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anonymous-user

Original Poster:

83 months

Wednesday 17th May 2006
quotequote all
Twice now the accelerator pedal hasn't come back for a few seconds after accelerating pretty hard. It's a bit of a brown trouser moment but lucky that i have a rev limiter on the car otherwise the engine would have blown!

Any ideas what this could be? I've got a can of spray lubricant/grease so I was going to oil all the parts of the throttle cable, etc.



dickymint

29,075 posts

287 months

Wednesday 17th May 2006
quotequote all
borat said:
Twice now the accelerator pedal hasn't come back for a few seconds after accelerating pretty hard. It's a bit of a brown trouser moment but lucky that i have a rev limiter on the car otherwise the engine would have blown!

Any ideas what this could be? I've got a can of spray lubricant/grease so I was going to oil all the parts of the throttle cable, etc.





Sounds daft but it is a known issue that the pedal gets jammed open by the footwell carpet!!

anonymous-user

Original Poster:

83 months

Wednesday 17th May 2006
quotequote all
Funny you should mention that but the guy who had the car before had replaced the drivers side mat with an aftermarket one (I suppose the original one must of worn out). This mat was too big so I presumed the throttle was getting stuck under it so I've (neatly) cut it down to size. I suppose that it could be getting stuck on the carpet but I've checked when stationary and the pedal travel seems to be pretty clear.

number 7

4,113 posts

291 months

Wednesday 17th May 2006
quotequote all
Also worth checking the cable itself where it comes out of the tube back of the pedal - it can get frayed. I've got a bike cable luber whcih clamps round the cable and allow you to squirt WD40 or similar down the inside. Does need it occasionally.

7.

anonymous-user

Original Poster:

83 months

Wednesday 17th May 2006
quotequote all
I've got some WD40 so I'll give that a go. Cheers!

Pandora

4 posts

244 months

Wednesday 17th May 2006
quotequote all
I had my first experience in a TVR on Saturday (as a passenger) and can confirm that this is an issue for TVRs as the throttle stuck open at 125MPH ! Thankfully we pulled over safely. It was established later that it was indeed the carpet that caused the accelartor pedal to stick. Dont know if that helps at all.

anonymous-user

Original Poster:

83 months

Wednesday 17th May 2006
quotequote all
Has anyone 'cut' the offending area of carpet out?

Pandora

4 posts

244 months

Wednesday 17th May 2006
quotequote all
Its been sorted, car is owned by a very accomplished driver and Mechanic (he'll kill me for saying that! lol)

wedg1e

27,035 posts

294 months

Wednesday 17th May 2006
quotequote all
One point about lubing cables: check first to see if it has a nylon liner for the inner cable to slide in. This is included to lower the friction on the inner cable.
However if you oil or grease it with the usual lubricants, the nylon swells and grips the inner cable. A mate of mine found his throttle jammed open on a Suzuki 1000 some years back after doing just that.

Theoretically you don't need to lube a nylon-lined cable but if you feel the urge, use silicon oil which is inert to nylon. Usually by the time a nylon-lined cable gets stiff, it's either kinked, frayed or corroded.

chunder

785 posts

275 months

Thursday 18th May 2006
quotequote all
I replaced the throttle return spring with one slightly shorter and fitted a second one as well just to increase the closing pressure. Gave a better feel to the pedal and also hopefully will help stop it ever jamming.

waynester

6,525 posts

279 months

Thursday 18th May 2006
quotequote all
wedg1e said:
One point about lubing cables: check first to see if it has a nylon liner for the inner cable to slide in. This is included to lower the friction on the inner cable.
However if you oil or grease it with the usual lubricants, the nylon swells and grips the inner cable. A mate of mine found his throttle jammed open on a Suzuki 1000 some years back after doing just that.

Theoretically you don't need to lube a nylon-lined cable but if you feel the urge, use silicon oil which is inert to nylon. Usually by the time a nylon-lined cable gets stiff, it's either kinked, frayed or corroded.


As ever Ian, you are a fountain of knowledge...

leorest

2,346 posts

268 months

Thursday 18th May 2006
quotequote all
wedg1e said:
One point about lubing cables: check first to see if it has a nylon liner for the inner cable to slide in. This is included to lower the friction on the inner cable.
However if you oil or grease it with the usual lubricants, the nylon swells and grips the inner cable. A mate of mine found his throttle jammed open on a Suzuki 1000 some years back after doing just that.

Theoretically you don't need to lube a nylon-lined cable but if you feel the urge, use silicon oil which is inert to nylon. Usually by the time a nylon-lined cable gets stiff, it's either kinked, frayed or corroded.
Useful and possibly life saving information indeed! I think the owners manual says to grease the handbrake cable with silicone grease. In the light of your information I guess it's a nylon lined handbrake cable then.

R6RY D

299 posts

270 months

Thursday 18th May 2006
quotequote all
this happened to me in a couple of times in my old wedge, and frighted the sh$t out off me, mine was caused by carpet. That got thrown in the bin!!!!

leorest

2,346 posts

268 months

Thursday 18th May 2006
quotequote all
R6RY D said:
this happened to me in a couple of times in my old wedge, and frighted the sh$t out off me, mine was caused by carpet. That got thrown in the bin!!!!
My carpets have been hanging up in the garage for the last four years! I got fed up with them getting wet every time it rained Didn't realise it was a safety mod LOL.

combine

3,114 posts

258 months

Thursday 18th May 2006
quotequote all
Carpet thing happened to me last year early on in my wedge experience - bloody scary ! Chucked said offending mat out , it now sits in back of garage , proper Tvr mat in dark blue too.