Guilty

I have always driven stick shifts and I always knew when I need to have the clutch replaced. This is my first auto transmission car and was wondering if the car has a clutch or something.. and how do I know when it needs to be replaced.


I always downgrade using the paddles to help the brake and yesterday after a long trip home it smelled like burned clutch

Besides changing the transmission fluid, what else do I need to do for the tranny maintenance?

CoolBDPhenom03

Yes, all cars have clutches. In autos, it's just managed by the computer. I'm not sure when it would need to be replaced, but you would probably be able to feel the clutch slipping when shifting gears.

Not sure about the tranny fluid, but that might be all?

Guilty

Alright thanks! After how many miles usually it needs to be changed?

PaulWdz

No, they don't. Most automatic transmissions like the 722.9, uses a torque converter and clutch packs. But there is no real clutch that is changing gears.

Guilty

Ah, thanks Paul. So basically what do I need to replace for tranny maintenance?

Venoms

The delir told me every 40,000 miles

Guilty

What's the name of the part?

I looked up clutch and torque converted but I found nothing

503C43 ////AMG

As mentioned before your transmission uses a torque convertor which is different than a conventional clutch as it uses fluid to transfer power from the motor to the transmission rather than a clutch and flywheel.

Tranny fluid and filter replacement is all that is needed for regular maintenance. You will know if something is wrong with your transmission as you will feel it slipping, chattering, bucking, or not working at all. If this is the case take it into a tranny specialist and they can diagnose the problem. I would be surprised if you actually damaged your transmission from downshifting to aid in braking unless you are downshifting at extremely high RPM's and holding it there.

Just because you "smelled" something doesn't mean anything is wrong, if you think otherwise take it in to be inspected.

Guilty

503C43, thanks you made my day. I'm much less worried now. I'm planning to take my car to the shop as soon as I get my check from the Valet company that hit my car. I'm going to have all the tranny maintenance done, fluids, oil change, brakes replaced, calipers painted and new wheels.

Jasonoff

http://auto.howstuffworks.com/automa...ansmission.htm

PaulWdz

what you were smelling was probably just overcooked brakes. Lots of guys have put way more power than you have through the 722.9 with no failure. It is a very under ratd from the factory.

CoolBDPhenom03

My mistake. I was thinking clutch packs and traditional clutches were interchangeable terms.

PilotAlan

When your car is surrounded by a cloud of smoke?

Sorry, I just couldn't resist your sig pic.

_timothy

is there anything wrong with driving around in manual and using engine breaking? i'm not driving around at sustained 7k RPM in 1st but I do frequently drive in M and rev up to 5-6k RPM before I shift and sometimes hold at around 2.5-3.5k RPM for 30-60s. usually when I break, I will downshift progressively as low as 2nd as I slow down from my original speed. it just sounds so satisfying

Quadcammer

Thats really not a good idea. Brakes are far cheaper than tranny work.

No, its fine to let the engine brake in a single gear, but I wouldn't downshift when approaching a light. There is really no benefit and the resulting transmission wear is far more expensive to repair than the brakes.

driftmotion

I'm not sure i would agree ... fist off, have you seen the price of a brake job on this car LOL. Second, how is you selecting to downshift any different than the car doing it on its own? The electronics blip the throttle and rev match, so downshifting from third to second and letting it slow you down is no different than staying in second gear and letting off the gas... Plus if you need to accelerate you know exactly where you are in the power band!