Jump to content
Click here to contact our helpful office staff ×

Throttle sticking to the floor!


heptagon

Recommended Posts

The Sigma gave me a fright today, had my foot on the floor overtaking up a big hill on a dual carriageway. Lifted off after the overtake and the throttle remained nailed to the floor. Luckily the road ahead was clear and I was not coming up behind anything else. I tucked my foot under the pedal and it lifted.  I guess I'm looking for sticky action at the pedal or other end of the cable but the fact that the throttle can stick open in any circumstance is frightening.

Link to comment
Share on other sites

Any recent work on it?

"I guess I'm looking for sticky action at the pedal or other end of the cable"

I'd disconnect in as many places as possible, and then feel the action of each component when worked by hand.

Weren't there some reports of jamming caused by overtightening at throttle bodies?

Jonathan

Link to comment
Share on other sites

In my previous Caterham, the throttle pedal used to 'gum up' around its pivot, over the winter hibernation. I dismantled, cleaned and greased and it happened again the following year.

I then ground some small grooves around the pin to help grease retention. Sold it before I found out whether that cured the problem more permanently. IIRC, it's not practical to install a grease nipple, but I may be wrong.

Link to comment
Share on other sites

In my experience the problem is that the 2 throttle pot. screws are too tight by about a quarter of a turn which causes the spindle to lock at full throttle......crack them off a bit and give it a try. The TPS should have sandwich plates either side of it but some do not!

Link to comment
Share on other sites

  • Support Team

I have a 2016 ex Academy car and had the same issue with the throttle sticking when the pedal was flat to the floor.  My problem was the pivot on the throttle body sticking.  1/8 turn loosen on the screw and some WD40 to lubricate sorted it.

Link to comment
Share on other sites

  • 3 weeks later...

DSC04788(2)_LI.thumb.jpg.aa5b562ccd0e131968297f054d214a8e.jpg

1. Fully open throttle by hand (mind your fingers!) Does it tend to stick open as you release it?

2. If it does, try easing off these 2 cap screws by a small amount (it helps to shorten the Alan key a bit) don`t go more than a sixth of a turn ( ACW 1 Alan key flat) as you could move the TPS and that would not be good!

3. If the throttle was stuck open, did it release when you eased the screws off?

4. try throttle for smooth open / close with with no sticking (by hand)

 

Link to comment
Share on other sites

This just happened to me on a windy B road today. Scared the you know what out of me *yikes* Had to dip the clutch and brake, the engine bounced of the rev limiter for a second then the pedal sprang back up. It was fine for the rest of the journey.

Will check the points mentioned above this evening.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...