Alfa Romeo 4C Forums banner
81 - 100 of 130 Posts
About my transmission problems, my mechanic has checked for all external valves and CAN-signals and came to this: no electrical of CAN-errors to be found.
Problems is a hydraulical-mechanical one and can not be checked inside the gearbox.

And so it becomes a 50/50 probability of:
- valve not coming to position due to a broken gearbox
- or gear not coming to its right position due to broken actuator

Any experience in these?
Any suggestions?
Any knowledge of Alfa Romeo having changed actuator type? Or extended warranty for it?
Any idea of an exchange unit, e.g. gearbox-actuator-combo?

Grtz.
 
Time for me to pull up a chair and hang out with this group.

55,000 kms, beautiful turbo-weather day (20C) and I was enjoying a spirited drive to work on a relatively light highway this morning. In Dynamic/Manual of course, 90-140 km/h, not flat out throttle, just good fun.

Car went into limp mode at around 120 when I requested a downshift, and was now stuck in 5th gear, Natural/Auto. Car wouldn’t downshift if I slowed down and I couldn’t override auto. I exited the highway in 5th gear, down to a crawl and made it almost all the way through the intersection only to run out of steam in 5th partially blocking a lane. Not a huge deal as I was able to push it the rest of the way (yay lightweight cars!).

Car wouldn’t start at all. I wanted to try to clear the code by recycling 5 times, but nothing. Called the dealer, called roadside assistance, tow on the way, called the dealer again and while I was on the phone it started and the transmission warning was gone. Car was still stuck in Natural so I cancelled the tow and drove it to the dealer. Manual worked.

Dealer found a TCM fault P1C9D-00 - gear position sensor 2nd/4th signal frequency incorrect. They verified correct operation of clutch solenoids, actuator ranges normal, fluid levels ok.

They referred to service bulletin 21-058-15 which covers “transmission warning lamp and harsh shifting”. [okay, I’ll give them the warning lamp but harsh shifting wasn’t a complaint of mine] They performed a software flash of the TCM bringing it to version UF14M080. Test drove it around 11 km and found no issues.

I picked up the car and drove home. Dynamic/Manual. Car was great, but I didn’t notice any difference in shift feel, for the record, but my car has always shifted cleanly.

After 30 km it went into limp mode again. This time the car would shift between 1-3-5 in Natural/Auto, so at least I could drive it. After 5 restarts I cleared the TCM fault and the car is once again stuck in Natural. Made it home.

Taking it back to the dealer in the morning and will update this thread.
 
Time for me to pull up a chair and hang out with this group.

55,000 kms, beautiful turbo-weather day (20C) and I was enjoying a spirited drive to work on a relatively light highway this morning. In Dynamic/Manual of course, 90-140 km/h, not flat out throttle, just good fun.

Car went into limp mode at around 120 when I requested a downshift, and was now stuck in 5th gear, Natural/Auto. Car wouldn’t downshift if I slowed down and I couldn’t override auto. I exited the highway in 5th gear, down to a crawl and made it almost all the way through the intersection only to run out of steam in 5th partially blocking a lane. Not a huge deal as I was able to push it the rest of the way (yay lightweight cars!).

Car wouldn’t start at all. I wanted to try to clear the code by recycling 5 times, but nothing. Called the dealer, called roadside assistance, tow on the way, called the dealer again and while I was on the phone it started and the transmission warning was gone. Car was still stuck in Natural so I cancelled the tow and drove it to the dealer. Manual worked.

Dealer found a TCM fault P1C9D-00 - gear position sensor 2nd/4th signal frequency incorrect. They verified correct operation of clutch solenoids, actuator ranges normal, fluid levels ok.

They referred to service bulletin 21-058-15 which covers “transmission warning lamp and harsh shifting”. [okay, I’ll give them the warning lamp but harsh shifting wasn’t a complaint of mine] They performed a software flash of the TCM bringing it to version UF14M080. Test drove it around 11 km and found no issues.

I picked up the car and drove home. Dynamic/Manual. Car was great, but I didn’t notice any difference in shift feel, for the record, but my car has always shifted cleanly.

After 30 km it went into limp mode again. This time the car would shift between 1-3-5 in Natural/Auto, so at least I could drive it. After 5 restarts I cleared the TCM fault and the car is once again stuck in Natural. Made it home.

Taking it back to the dealer in the morning and will update this thread.

Sorry to hear that buddy. I would buy an inexpensive code scanner and look at the codes myself. I’ve had codes come up that make the transmission light come on when there’s nothing wrong with the transmission at all. Also you can clear them instantly see how it goes. An Autel code scanner is about $35 and small. Will read most all codes and it will clear many of them.
Italian electronics are not quite what they should be. Even my Giulia has weird codes every once in a while.
 
Sorry to hear that buddy. I would buy an inexpensive code scanner and look at the codes myself. I’ve had codes come up that make the transmission light come on when there’s nothing wrong with the transmission at all. Also you can clear them instantly see how it goes. An Autel code scanner is about $35 and small. Will read most all codes and it will clear many of them.
Italian electronics are not quite what they should be. Even my Giulia has weird codes every once in a while.

Will definitely try this OBD plug I have and an app first to see if that can at least clear the code. Don’t remember what it is as it’s usually in my other car. If it doesn’t work I’ll pick up a scanner for sure. At least I can get myself out of limp mode instead of being stuck in precarious situations.
 
Will definitely try this OBD plug I have and an app first to see if that can at least clear the code. Don’t remember what it is as it’s usually in my other car. If it doesn’t work I’ll pick up a scanner for sure. At least I can get myself out of limp mode instead of being stuck in precarious situations.

I own two of them and keep one in each Italian car I own LOL!
My 4C has had code problems from the beginning not so much anymore. One time my gas flap was not completely closed and I got a code. That was a cheap and fast fix. It has saved me so much time and trips to the dealership. And sometimes you go to the dealership and they can’t find anything wrong they just clear the code and send you on your way. Well you might as well just do it yourself first.

The one in my Giulia I’ve actually used it more on other cars to help other people out than I have on the Giulia. Too many gearhead friends!

Code scanner... don’t leave home without it.
 
@heelntoe This is the exact description of what I have been going through all summer. I feel your pain!!
Did you do any mods recently?

If this is the same thing, I have bad and good news for you:
1- it will get worse, till the point it's to dangerous to drive (neutral on the highway, ...) For me, unplugging the battery helped in the beginning.
2- It's the actuator that is not shifting correct or quick enough, making the signals coming through throwing an error.
3- An actuator can be changed without taking the engine out. An 8 hour job according to Alfa. My mechanic needed 19 hours, combined with maintainance, repair stuff broken by the dealer, ...
4- An actuator costs 1750EUR. Parts for overhaul are not available. No trace of parts on an exchange basis.

Are you still under warranty. I'm no longer, but Alfa Romeo gives a 50% discount on parts. For the actuator, I went with an independent as I no longer trust my official dealer, so no discount...
I am going to take this directly to Alfa, as this is the second actuator (after a thid alternator, second aircon compressor, third turbo, ...). I'll keep you posted on where I get with that.

My mechanic went quite deep into measuring every possible channel, so not just following error codes over CAN. He came to the point not being able to tell whether it was the actuator not shifting right, or a damage gearbox not letting the actuator push to the right position. But is was definitely a hydraulic-mechanical problem, not an electronical. There is nothing in the parts to tell which one was, though it is possible by design. As changing the actuator didn't need to take out the engine, and the part is cheaper, we went that way. Turned out to be the right one.
 
Time for me to pull up a chair and hang out with this group.

55,000 kms, beautiful turbo-weather day (20C) and I was enjoying a spirited drive to work on a relatively light highway this morning. In Dynamic/Manual of course, 90-140 km/h, not flat out throttle, just good fun.

Car went into limp mode at around 120 when I requested a downshift, and was now stuck in 5th gear, Natural/Auto. Car wouldn’t downshift if I slowed down and I couldn’t override auto. I exited the highway in 5th gear, down to a crawl and made it almost all the way through the intersection only to run out of steam in 5th partially blocking a lane. Not a huge deal as I was able to push it the rest of the way (yay lightweight cars!).

Car wouldn’t start at all. I wanted to try to clear the code by recycling 5 times, but nothing. Called the dealer, called roadside assistance, tow on the way, called the dealer again and while I was on the phone it started and the transmission warning was gone. Car was still stuck in Natural so I cancelled the tow and drove it to the dealer. Manual worked.

Dealer found a TCM fault P1C9D-00 - gear position sensor 2nd/4th signal frequency incorrect. They verified correct operation of clutch solenoids, actuator ranges normal, fluid levels ok.

They referred to service bulletin 21-058-15 which covers “transmission warning lamp and harsh shifting”. [okay, I’ll give them the warning lamp but harsh shifting wasn’t a complaint of mine] They performed a software flash of the TCM bringing it to version UF14M080. Test drove it around 11 km and found no issues.

I picked up the car and drove home. Dynamic/Manual. Car was great, but I didn’t notice any difference in shift feel, for the record, but my car has always shifted cleanly.

After 30 km it went into limp mode again. This time the car would shift between 1-3-5 in Natural/Auto, so at least I could drive it. After 5 restarts I cleared the TCM fault and the car is once again stuck in Natural. Made it home.

Taking it back to the dealer in the morning and will update this thread.
Sounds like the problem I had this spring. In the end they replaced the thing that controls 2,4 and 6 gear. 2700 euro's without tax and without replacement. Had warrenty thanks god. https://www.4c-forums.com/16-engine-technical/25193-transmission-failure-5.html#post926769

Well, and after I picked here up the pressure sensor failed. That was really scary. Just turned on the highway and the car started to accelerate by itself. Had to drive back very carefully. They replaced the sensor for one of a Giulietta QV TCT and then finally everything was solved.
 
@heelntoe This is the exact description of what I have been going through all summer. I feel your pain!!
Did you do any mods recently?.

No mods - only a V2 intake and I doubt that is related.

Update from the dealer today is that after their diagnosis and consultation with tech support they are replacing the complete hydraulic and electronic assembly - which they clarified is “everything, more than just the actuator.” Not sure exactly what parts are involved here just yet.
 
Well, and after I picked here up the pressure sensor failed. That was really scary. Just turned on the highway and the car started to accelerate by itself. Had to drive back very carefully. They replaced the sensor for one of a Giulietta QV TCT and then finally everything was solved.

Now that sounds scary, especially so if it was my wife driving and not me. What part is this exactly, do you know?
 
any news on the transmission?
Still waiting...the service department received the parts damaged (shipped within Canada) so they had to open a case to prove the parts arrived damaged and it wasn't their negligence. No more parts in Canada, so I think they're also trying to get FCA to ship the replacement from the US. I saw the box it arrived in. It definitely looked like it was delivered by Ace Ventura...


Hopefully the car will be done by the end of the week.
 
Still waiting...the service department received the parts damaged (shipped within Canada) so they had to open a case to prove the parts arrived damaged and it wasn't their negligence. No more parts in Canada, so I think they're also trying to get FCA to ship the replacement from the US. I saw the box it arrived in. It definitely looked like it was delivered by Ace Ventura...



https://www.youtube.com/watch?v=2Q6_9A90cUk



Hopefully the car will be done by the end of the week.

Exact same thing happened to me here in the states. The first transmission was damaged in shipping and had to send another one.
 
Still waiting...the service department received the parts damaged (shipped within Canada) so they had to open a case to prove the parts arrived damaged and it wasn't their negligence. No more parts in Canada, so I think they're also trying to get FCA to ship the replacement from the US. I saw the box it arrived in. It definitely looked like it was delivered by Ace Ventura...


Hopefully the car will be done by the end of the week.
Exact same thing happened to me here in the states. The first transmission was damaged in shipping and had to send another one.
DUDES, it's the SAME box - they just keep passing it around, hoping somebody is going to take the blame for it instead of them!
>:)

Glad to hear they are on it. I think the service department there is pretty good - just a bit expensive.

Hope you get your car back in time to enjoy a some late fall driving.
 
DUDES, it's the SAME box - they just keep passing it around, hoping somebody is going to take the blame for it instead of them!

>:)



Glad to hear they are on it. I think the service department there is pretty good - just a bit expensive.



Hope you get your car back in time to enjoy a some late fall driving.

No it can’t be because that damaged one is still at my dealership. I was told they changed how they delivered it after they broke my first one.
Maybe your area has not been informed?
Or maybe the two shipping departments have brothers from another mother?
 
Make sure they check the transmission/hydraulic fluid. On the replacement for my LE, it arrived and it said that it was filled and ready to go. It was not filled and very much not ready to go. Not far at least. Fluid does good things. No fluid does bad.
 
  • Like
Reactions: heelntoe
So I’ve had the car back for two days and so far no issues.

They replaced the hydraulic actuator. Part #68303710AA. Apparently it’s a “kit” with everything attached to the outside of the transmission. Warranty price for that part was CDN$4700, and apparently there’s no core return so I guess they don’t get rebuilt.

While the car is working I have to say that I’m not feeling it’s the same as before. The downshifts in manual seem somewhat lethargic, and actually pretty clunky when it shifts itself into first after coming to a stop. These used to be almost imperceptible before. Overall the original car felt much crisper and refined. Also, the cool pump priming sound when opening the door is gone. Does anyone else not have that sound anymore?
 
81 - 100 of 130 Posts