'Sticky' throttle question

[limeyd]

My GF and i took advantage of the warm weathger on subday and went out for a great drive. We actually met up with soem folks from the Ducati club i belong to and we had a blast driving in the country trying to keep up with a bunch of Ducatis )
Anyway, on the way home i noticed that the RPM was not returning to the idle mark when i removed my foot from the gas peddle. I put my foot under the gas peddle to see if it was the actuial peddle that was sticking but that was not it. Obvioulsy soemthing in the linkage is sticking, can anyone point me in the right direction and tell me what i should be looking for. The actual symptons were if i was in 5 th gear and removed my foot from the gas peddle, it was almost like having cruise control, i also noticed that the idle, when it finally returned to idle, seemed to be higher than normal, about 1.5 k.
Im assuming that this is just another of those pesky teething problems, car has under 1k miles, Roush 402r with a TKO tran.

Thanks in advance for any help
cheers

David

[JBCOBRA]

Check the linkages on the fire wall. On my SPF there is a LOT of adjustability there. One of the nuts on the linkage loosened slightly and moved just a little bit and did the same thing you discribe. Ended up putting an additional nut and bolt to reinforce/eliminate any potential for migrating linkages. Maybe check the carb return springs too?
lmk
JB

[Cashburn]

Dave,
Glad you got out in the nice weather. Check the pedal shaft, sometimes a little bit of oil on the assembly can keep it loose.

[Bailey]

Also check the cable for any sharp bends, maybe spray some WD40 in the cable housing to lube the cable.

[Philip Messer]

David,

My throttle springs on the carb are concentric (one inside the other). I found that the springs would occasionally get tangled with one another causing the throttle to stick like you described. So, I inserted a copper pipe (5/8 in dia, about 3-inches long, I think) outside the inner spring and inside the outer spring. Noe more problemo!

Phil

[Boudy]

I've had several cars that I used a LoKar cable on. I found that after a few hundred miles the cable begins to dig into the rubber liner that it rides in. Remedy is to remove all the slack in the cable and remove the axcess at the carb and send a few drops of lube down the cable. This problem was always worse when there was any slack in the cable.

Boudy

[SACoupe]

As Cashburn says, check out the accelerator pedal linkage under the dash, Some of the cars had a thinner diameter than others and tend to bend over time, causing the linkage to snag in the bushings where it curves 90Deg from the pedal.....a small bend or some WD40 worked on mine.