1999 F355 F1 won't engage gear when cold, shudders violently

Is this your car and has it always done this??

 

I let my car warm before driving. But I do select reverse or first to move it to a spot to allow for that and have never had any issues.

At the very least you should let the car run until the aux air pump stops....I wait until I see a deflection in the water temp.

If it is a sincere shudder, have someone with an SD computer check the PIS.

 

Sounds like yours may be a bit more severe than mine, but a shuddering was one of the symptoms I saw prior to doing an F1 overhaul. Root cause was leaking OEM triple seals contaminating the disk causing slippage and warping of the pressure plate.

LAST PAGE OF THE THREAD IS THE MOST IMPORTANT>

https://www.ferrarichat.com/forum/threads/f1-overhaul-thread-clutch-pump-throwout-flywheel-360-pump-etc.467896/

 

Yeah - leaking inside the pumpkin (probably a contaminated pressure plate) freezes the clutch when temps drop and the car has been sitting idle. With warmer air temps, leaky triple-seals or grease contamination flows freely and are either burnt away by heat or cleaned off by airflow when driving and thus issue subsides. My 98F1 clutch completely seized after sitting for over one year due to this same issue. When I would request first gear, the car would shudder but the throwout was not strong enough to break the pressure plate from the flywheel. Had to remove the pumpkin and go thru it all. Don't buy the original triple-seals, get the Viton ones as they are easier to install with less chance of deforming.
www.ferrarichat.com/forum/348-355-sponsored-bradan/529602-triple-seals-viton.html
https://www.ferrarichat.com/forum/threads/viton-triple-seal.570441/page-3

 

Pull the pumpkin and have a look
If setup properly will not do this no matter how cold

 

It’s a clutch problem but could be from many different issues.
In my experience it is usually obvious

 

F1 transmission system are finicky of this era
And being you had a clutch replacement I’m sure the techs who did the job made the necessary adjustments and reset set all parameters in the controller

With that said if you are having a hard engagement of reverse and first with everything up to temps or after a 10 min warm up cycle there’s something wrong

The only time I seen a engine wanting to jump out of a car when going into neutral or hard banging going into gear (any gear) there was a problem with the clutch not filling dis engaging the power from the engine
why you are having this problem (idk) but a full check of the releasing of the clutch is needed the systems relies on sensors to tell the ecm where the clutch is “in time aka location” to make shifts if the pressure plate or throw out bearing is not set up right there’s no way for the controller to know the engine is still holding a load (aka power to ) the transmission even
a cold transmission will not shift good at first but warmed up it’s ok
you are saying after 10 minutes I never seen a problem in shifting of a properly set up system taking that long even with the wrong oil in the unit something more is going on maybe a second look at from someone else is in order where
Hope you find it before it gets worst




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