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  #1  
Old 06-13-2013, 03:02 AM
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Calling all tranny experts

Headed out for a nice cruise today with the guys when I decided to do a 2nd gear hard pull going into to third. But as I up shifted I let go on the gas while switching gears and the floored it but I guess the tranny didnt get into gear and the rpm went up to 2.5-3k and made a screeching grinding noise then caught on. Question here is has anyone ever had this problem? Or is somthing wrong with my tranny? Also to mention my tranny fluid has never been changed. Would appreciate everyone's thoughts don't be afraid to share thoughts thanks.
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Old 06-13-2013, 03:07 AM
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Old 06-13-2013, 07:46 AM
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Manual steptronic upshift?

The up and downshifts via steptronic are notoriously slow...you may have raised the revs before upshift?
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Old 06-13-2013, 08:04 AM
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Quote:
Originally Posted by g300d View Post
Manual steptronic upshift?

The up and downshifts via steptronic are notoriously slow...you may have raised the revs before upshift?
It was slow until I changed the filter and then did a few oil changes on it.. Then reset the adaptation and now it shifts quick as lightening!

HUGE improvement
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  #5  
Old 06-13-2013, 08:21 AM
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Came here to post this tranny expert:

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Old 06-13-2013, 09:02 AM
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Old 06-13-2013, 09:08 AM
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Ricky, am scared to ask how you came to know about said tranny experts...:-P
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Old 06-13-2013, 09:12 AM
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Quote:
Originally Posted by Ricky Bobby View Post
Came here to post this tranny expert:


RB, you are killing me!!!!!!!!

as far as the hard shifting...

the auto tranny and the engine rely on the speed sensors and the rotational sensors in the engine (RPMs) and the tranny to match things up - they evaluate your rolling speed, the engine's RPM and the RPM of the tranny and then engage things accordingly, to avoid any mechanical or hydraulic damage... for example, years ago, in my E34, V8, 5 speed auto, i was going like 95 MPH in full auto, when i decided to drop the gear into the 4th and 3rd, in order to pull even faster... as i moved the gear lever to the desired number, nothing happened - the engine revs were still the same, and there was no downshift... car remained in the 5th gear, overdrive, as at that moment, if the gear were to change down, the engine's revs would have exceeded the safe threshold in the 4th, and definetely would have gone into the red for the 3rd gear...

that being said - i am sure that you still can manage to fool the foolproof system and rip our tranny out of the car by just rowing the gears in the automatic and for sure, the manual tranny...

grinding sound is definetely NOT good, that means that something did not agree with something else mechanically... You will have to accept the fact, that if you are going to be driving more aggressevely, or if you will be tracking the car, you will have much higher component failure rate, starting from the tires and going up the chain...

as far as changing tranny fluid... we all agree, there is nothing lifetime in man-made toys... (unless it is the pyramids) but the unofficial idea hovering in the forums is that if the tranny fluid has not been changed and maintained before tranny hit something like 40-60K miles, than the fluid should be left alone, as the change brings about a tranny failure... do a search on the subject, there is a ton of reading material...
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  #9  
Old 06-13-2013, 09:14 AM
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Originally Posted by g300d View Post
Ricky, am scared to ask how you came to know about said tranny experts...:-P

they've met in Bangcock... err.. sorry, typo... Bangkok...

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  #10  
Old 06-13-2013, 09:29 AM
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Quote:
Originally Posted by Ricky Bobby View Post
Came here to post this tranny expert:

It must be a NJ thing.....
.
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