456 Auto Gear Box transmission problem

hello everyone,
My 456 Auto Gear Box Transmission , when I pull it from P to R , it shakes very hard, then into N, shakes but not as bad, then in D, shakes very hard again, down to 3, 2, 1 is fine. Push is up to park, same thing happens. Any idea? At the same time,the ASR light comes on and cannot be shut off with the button, also the Transmission gear boxlight is on too. Tried turning off the car, pulled the battery and reset the computer, still the same. ASR and Transmission light will not go away, stays on. When driving from dead stop in D position, seems like I have to Rev is to 3000 RPM, before it will shift into higher gear, seems like it will only stay in 1st , is like is hestiating to shift up, is like something is holding back will not let the car go. never happen before.. only have about 30000km , last year when the car was still under extended warranty, had the transmission checked,and itwas perfectly fine. This all just happened suddenly, no pervious signs, drove the car for 1 hour, parked it, started it up, drove it for 5 mins, then suddenly happened! anyone have any idea what is going on? could it be some sensors? or the transmission? I have a feeling the transmission is fine, becuse is not slipping, it shifts into every gear, but just shakes very hard between P to D, the car moves, step onto the gas paddle it goes and it moves, just that is like something is holding it back.. someone please give me possibities on what could be happening!.... very confuse.............. Thank you everyone.........

 

where would that be located, by any chance you would have a part number or a diagram shows where it is? thanks

 

ok, I will check it out, thanks

 

well, thank you everyone first! I will check all the basic things first, after i check all that if is still not working properly, where should I go next!

 

sorry, what I meant is what to look at next , what other things should I be checking if cleaning the connectors and checking all the wiring cannot slove the problem....

 

Ok, so what we did was we unpluged and cleaned all the connectors to the transmission, the Transmission and ASR light went off, we drive it for around 40 minutes, suddenly both lights came back on again went I was travelling at around 20 kms. During this 40 mins, I drove the car normally, tried shifting gears, went all the up up to 120km, everything was perfect. So after that I had to drive the car back to my gargage, during the trip back which is about 15 mins, I realized I am still able to drive the car, the only problem is just that when I step onto the gas paddle, from a dead stop, i have to rev it to almost 3000 rpm before it will change up a gear, is like is stuck in frist or second gear, whatever the car is suppose to start from. it will even shift to 3rd or 4rd when I am willing to step onto the gas, but between each shifts, the car would really really shake, is like something is holding it back won't let it shift up naturally. especially sfifting from D to R or P, the whole car would shake quite abit. when is passing through R, it will definatelly shake.

So after I arrived back at the gargage, I unpluged the battery to let the car reset the computer over night. The next day, Started up the car, both lights are gone again. took it out for 5 mins, again both lights as expected came back on. but I still drove the car for another 15 mins, even when both the lights are on, the car when is in a normal gear driving, everything seems fine, except for the fact there is something holding back the gears from shifting up.

So, now the situation is : I think the transmission unit itself should be fine, not the clutch disc, is not slipping, the gearbox should also be OK beacuse when the lights are gone, the car drives perfectly. what I am thinking should be some wiring or sensors, But then of cause I am not sure if it would be the Solenoid inside the transmission that's causing the problem. vert very confuse, When do you guys think? also with the OBII machine, this is not the one ferrari uses, i think there are some code we cannot see here with the machine that i am using, it will show cannot connect or some code that starts with I think 6......

any ideas?

 

well, this morning started up my car again after disconnecting the battery from last night, as expected again, the ASR and transmission lights disappeared. Took it out for a drive, supprisingly this time they didn't come on until an hour later. But the wierdest thing is that this time the transmission shifted really smooth shifting from D to R to P, it wasn't shanking in anyways even with the lights on, and the drove very nicely. And now I can sum up that by disconnecting the battery for a period of time, it will reset the computer and everything will go back to normal. But after 30 mins to an hour, the ASR and transmission lights will for sure come back on. So now I am thinking, it must be some sensors, am I right??????? If it is , any clue on which sensor ot sensors it would be? Hope some of you can help me, million thanks in adavance...............

 

can you please give me some ideas of which part in the diagram should I be after first? I think I understand what you are saying , but can you please make it little bit more easier for me so I could narrow down my search............. thank you so much......
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checked everything, tightened up all the hoses and both the transmissionand ARS light went away for 2 to 3 weekswith no problems. Drove perfectly. Suddenly last night as I was driving, after about 25mins, both the lights came on again. Shutted the car off, turned it back on after 1 hour, it was ok..... 20 mins , same thing happened, buy just like before I was able to drive the car, but is like it is stuck in 2 gear having a real hard time shifting up. exactly what happened previously. what I found is everytime after the lights come on, shut the car down for 20 mins or so, both the lights will go away,but always come back on after the engine warms up....any ideas anyone.............????