Sticking throttle??

[Corin Denton]

Picked my car up yesterday from it's 42k service and just as I joined the M5 southbound the throttle stuck open, not fully but just enough to keep the car accelerating along the motorway, dipped the the clutch and the revs rose dramatically obviously so ended up with the left foot on the brake and the right foot stamping on the throttle. Eventually the throttle released we managed to slow the car back down and everything seemed to go back to normal until later in the day I went to put the car in the garage and as I was reversing it happen again and I ended up bumping into my scooter!! Had a look under the bonnet the throttle linkage has been freshly sprayed with grease from the service and is operating fine, don't think it has anything to do with the service, just coincidence.

Anyone had anything similar happen, any advice would be great as this could be dangerous!

[PeterC]

If it has never done anything like it before, it is far too much of a coincidence that it has happened immediately following a service.

I would have the car independently inspected and following their report take action against the garage - you could have been killed or killed some other innocent motorist.

If you are an RAC or AA member, talk to them.

[GreenV8S]

Check for carpet/mat catching on the pedal?

[edhorne]

This happened on my S. It turned out to tbe the under bonnet sound deadening stuff. Took me ages to figure that one out. I just glued it back to the bonnet and all was well.

Hope you sort it.

Ed

[bobski]

What glue did you use?!

edhorne said:

This happened on my S. It turned out to tbe the under bonnet sound deadening stuff. Took me ages to figure that one out. I just glued it back to the bonnet and all was well. Hope you sort it. Ed

[cosmoschick]

GreenV8S said:

Check for carpet/mat catching on the pedal?

Yup...good point (GreenV8S beat me to it). That's actually happened to me. Pretty scary at the time.

[Incorrigible]

PeterC said:

I would have the car independently inspected and following their report take action against the garage - you could have been killed or killed some other innocent motorist.

I'd take it back to the garage that did it first off, granted it could be dangerous, but it's not like they're actually trying to kill you

It's a pretty simple mechanism, not too much to go wrong

[Corin Denton]

Well, spoke to Penninsula this afternoon and apparently it's quite common for the cable to get a couple of internal frays which can cause this so I've taken the cable off this afternoon and it seemed quite fine until after operating it about forty times it hitched so this has got to be the problem. So a new cable should se me safely on the road again!

[PeterC]

If it is a problem that is so commom, why did they not check for it and find it during service?

The consequences are so dangerous, that IMHO they should replace the cable on date or mileage, not simply after you have had a problem.

[shpub]

PeterC said:

If it is a problem that is so commom, why did they not check for it and find it during service? The consequences are so dangerous, that IMHO they should replace the cable on date or mileage, not simply after you have had a problem.

Be realistic!

The consequences are not that dangerous as the drive can be stopped by putting the car into neutral or dipping the clutch. It is not that common a problem because the word common is a very loose and meaningless term.

Also you cannot hold the garage at fault for everything as things will break and fail even though the servicing has been done. There is nothing that is 100% reliable.