gas peddal

It's normally the bellcrank on the throttles between the banks, the bearing goes dry, easy to disassemble, clean and lube. Quick Search will find more detailed how to.

 

Also check, clean, and relube the axle and bearing at the pedal itself.
A couple drops of cable oil in the cable doesn't hurt either.

 

As the other posts, lubricate everything. The good news in that a new throttle cable is not very expensive (keeping in mind that it's a Ferrari part). Maybe your cable is 15 years old, so..............

 

Check your motor mounts. Mine have failed twice now, and both times we thought it was a pedal issue, but changing cable, relubing everything, etc. didn't help. When the stock mounts go, the engine rests on the frame and bungles up the throttle system clearance. New mounts, and my car is super smooth. Worth a look! Good luck.

 

Yeah, I know... Just trying to save you all the trouble my mechanics went through trying to sort this issue!

 

Does your throttle pedal catch when the gearbox is in neutral as well as in gear? Also, is it worse at lower rpms? Just trying to see if your symptoms are the same as mine.

 

My car wasn't suffering from this, it was definitely motor mounts. Not saying your car isn't suffering from the above thread, just that mine wasn't.

Also, if you need to replace the mounts, it's not too expensive (in Ferrariland).

 

Did you use Ferrari mounts or aftermarket?

Dave

 

You need to remove the undertray and look at the mounts. I'm not a mechanic, but I try my best to understand what my shop is doing.

 

My car picked up a bit of transmission shifting glitch that I ignored for a while. At my major service we founf the motor mounts had degraded and alloed the engine to list in the bay, just barely.

I replaced the motor mounts wiht challenge mounts. They work just fine and my transmit just a tad more engine vibrations to the chassis and driver, but it is a very small addition.

I had good luck with a drop of oil on the end of a long screwdriver to deposit oil on the throttle linkage points under the air box inside the motor area. I used this more to figure out which joint was causing the grief than to lubricate the joint (in a long term sense).

A few weeks ago someone wrote up (in FC) their disassembly , cleaninig and lubing of the throttle pedal in the foot well. Indicating good results.

But, overall, the problem in the stiffness is that there are a lot of throttle plates and springs in the individual throttle body design of the motor. You just have to teach your foot the amount of leverage needed and the delicasy needed to drive the car smoothly. It helps to position the heal of your foot on the cover to the throttle pedal and rotate the foot with nearly the same angulation as the pedal itself. That is, don't press on the pedal from your thigh or calf, but from your foot, like going from standing flat footed to standing on your toes.

 

Great post, thanks. Did you do anything to the throttle bodies, (like balancing) to smooth out your throttle? I still feel like mine could be smoother even after new mounts and a complete pedal relube and throttle cable replacement. The throttle body balance is the one thing my shop has left to do in my 355's throttle saga.

Ferrarichat user SpaghettiJet said balancing his throttle bodies was the biggest and best improvement he's made by far to his entire car. I just don't see Ferrari selling any new car with a jerky throttle, but we all know they have done some pretty unbelievable things!

 

I have balanced my throttle bodies, but this is really a job for a mechanic as you need 8 manometers to read teh vacuum in each throttle body, and what order to perform the adjustments. It is all in the WSM, but expect to get your arms fried from heat rising off the headers as you proceed.

Also note: the TQ numbers on the closing points for the manometers are very slight. That is, just snug them up.