"sticky" throttle?

[zeppo]

Hi!
Today I had a strange problem. When I drive at constant lower revs (2-3000rpm), the car holds rev when I release the pedal slowly.
When I push the pedal quick (or release quick) the car lowers rev as usual.

sign of a dying throttle cable?
new throttle spindel bushing required?

any other ideas?

cheers Josef

[ChazUwe]

Easy to check if it has frayed at the pedal end connection. You can see through the gap in the metal pedal backplate, found this pic on PH courtesy of M4tti:



If nothing bad there maybe get the top of the airbox off and take a look at the other end....

[twinreal]

Maybe the throttle linkage touches the rubber sleeve of the brake servo.
If it's not a mechanically problem with the throttle cable it's worth to take a look to the bodies. I went for Andys ball bearing mod and since then better than new. Look here: http://tvr-forum.de/viewtopic.php?f=16&t=6144&...

Thomas

[zeppo]

thanks guys, will check these things this weekend...

[phoenixz]

Hey,

I had a similar problem recently. It got so bad that I ended up using a bungee cord hooked under the seat to pull the pedal back every time I lifted off.

Replaced many parts and tried many different things. Give Tony a shout at Hexham for how he finally sorted it for me.

Just ask him what he did for the red Sag.

[zeppo]

Will do!
I'm located in the south of Germany and my main workshop never has time for TVR's (too much Defenders to repair in Munich)... so I used to do all things by my own and I'm not a mechanic...

[TVR nut]

Had the same problem with mine twice now. First time the cable was sticking and I sprayed wd40 down both ends and worked it and it came fine, that was a few years ago. The second time I couldn't get it sorted so changed the cable, that didn't work, it was at TVR Ecosse getting serviced and I mentioned it to Barry, turns out it's where the peddles hing at the bottom of the pedal box all the crap gets in and makes them sticky. You have to take the whole pedal box out to get the bolt out and clean it up, the bolts the full width of the foot well. Mine is now perfect.

[BL04NDO]

Had same problem so took it to local garage (Calvin at Wilton Morgan)

Basically the long pin holding in the 3 pedals became corroded and starting sticking. Mechanic took off, sanded down and cleaned.... perfect.

[zeppo]

I removed the pedalbox plate this weekend, removed the dirt and used sewing oil and a half can of WD40 on ever moveable part. On engine side, I used WD40 on all turning parts I could reach without removing the main bonnet.
Now it works (most of the time) and the pedal movement is very soft, so I guess I have to remove the airbox and lubricate the supporting points of the throttlebodys more exactly and it will be fine.

The throttle cable itself looks like new...

[Englishman]

This thread got me checking my throttle cables.....

This is what I found on the Sagaris:



Very, very close to snapping - thanks for starting the thread, saved me a call to the RAC and/or potentially worse!

[ChazUwe]

Hi Englishman, what end was that? Literally you probably only had a few more drives left like that before breakdown, or as you say worse!

[Englishman]

ChazUwe said:

Hi Englishman, what end was that? Literally you probably only had a few more drives left like that before breakdown, or as you say worse!

The end in the footwell. Couldn't really see without taking the pedal plate out, but then it was obvious!