Need help on Vibration after clutch service

Exhaust bolts are external; exhaust sounds are internal. That's not going to change exhaust note

Did they perform any ECU upgrades? That could have an effect. Maybe they adjusted shift points.

Is this an F1 or 6 speed? Not normal for a clutch to vibrate. You might have an out-of-round or out-of-balance pressure plate.

 

Did they remove the flywheel and had it resurface?

 

More importantly, was the flywheel & pressure plate balanced together?

Supposedly this isn't needed with Ferrari replacement PPs which come 'pre balanced'. However, it took almost an ounce of weight to balance the combination, & the shop told me that the flywheel by itself was balanced.

However, i can see vibration at certain speeds due to an imbalance, but don't see how it would affect power or sound.

 

One time I had my engine balanced and I remember my machine shop welded a piece of metal on the preasure plate he said that this is part of balancing an engine any moving parts need to be balance down to ounces, as a result it sure did pay offs i had that motor reving up to 9000+ rpm and it is smooth.

On my other car I felt an annoying vibration from 1000rpm and up, after diagnosing it I found that my rear motor mount was bad, after replacing it the vibration went away. I just thaugth that the mount on the MASERATI might be bad or installed incorectly, thats all I thought I shared my experience with you, thanks

 

Well, sort of. After about 6 months after my new headers were put on, my car started making vague farting noises which were near impossible for me to track down at first. I checked the carb side thinking I had a vacuum leak somewhere. It turned out to be header nuts that were finger loose and the gap was making the noise. But in this case it's definitely not the problem.

Ken

 

I feel your pain; I used to have all kinds of new issues pop up when I'd take my car in for seeming unrelated issues. Not knowing what they did, I can't really help, but I hope you can get details of what it was when they figure it out and you don't have to pay for a dealer's screw up.

Ken

 

I know you said they didn't do anything but clutch work but, it sounds like a timing issue("feels like it's being held back")or exhaust restriction. As was said earlier seems odd that a clutch change would cause the problems you are describing, unless the clutch was sliping or the paddle shift isn't functioning correctly but, I wouldn't think that would account for the sound difference. There must be more to this story than the person at the dealer knows or is telling you. Are you getting any service lights coming on? Sorry for not being any help but it does sound like an interesting problem to figure out let us know if it gets resolved. Regards, Vern

 

Car goes in for planned maintenance, comes out running awful, then dealer volunteers to replace the entire clutch and drivetrain without even yelling at you?!

Sounds like they dropped your car off of a lift or some such.

They know that they messed something up.

 

Especially if under warranty since they gave the car back to you I would drive the crap out of it and break it. Sometimes it is the only way the part replacers can fingure out what is broken. It sounds to me like they haev no clue of what is going on . If you think Ferraris have problems Masers are worse. Don't ask me how I know.... Good luck however

 

Not quite so sure I belive the bent drive shaft idea. I would be going back over what they touched during the service. If they removed the flywheel to get it machined, they could have installed it wrong.

I'm not quite sure where the crank sensors are located on the Maserati's but if they read off the flywheel, and the flywheel was installed incorrectly, or damaged in some way this could indeed effect how the car runs.

the tech could have also indavertantly knocked or left somthing loose under the hood, vac line etc during the service causing this to happen.

But a bent drive shaft?? I don't think so. I bent a few in my day and they never "just slightly" bend.

 

Ha!

Now that's funny, I don't care who you are.

 

Are you thinking that your car was dropped off of a lift hard enough to collapse a motor mount??

 

Greg, Nothing more than just comments here but, I thought it was odd when you said they had only worked on the clutch, to get that poor running prob.(ref. to my post no. 10 on the hold back issue) why did they reflash the ECUs? Crap, I wouild be hot over that issue. Have them put the old programming back in. Assumming that the reflash must have adjusted timing(retarded)which would account for your description of sluggish running. Again it would be interesting to know why they took nit upon themselves to do it in the first place. Regards, Vern

 

It's odd that his car keeps coming out of that dealership in worse shape than before.

Is his car sluggish for the reason that the dealership gave him about the ECU flash, or is it sluggish because of some botched mechanical repair of his bent drivetrain?

Why did he have broken/crushed motor mounts?

It's odd. Very, very odd. All of it.

 

I hope you have better luck than a friend of my with his 2004 conv. It seems everytime it went in for something wrong, it came out with a host of other problems. He finally traded it in on a new Z06.

 

Hey, now that's great news!

Thank God that I was wrong.