Acura clarifies the definition of a transmission flush
#1
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Thread Starter
Acura clarifies the definition of a transmission flush
From the January 2008 ServiceNews:
Remember, Honda does not require that the transmission be flushed (as outlined in the above procedure) if you are just performing routine maintenance on the transmission.
Some A/T repair procedures call for flushing the trans using Acura Precision Crafted ATF-Z1 (and no
substitutes). Problem is, where do you find the info to do that? It’s not listed in the S/Ms and if you do an
ISIS search, you’ll find a few ServiceNews articles on this subject, but they’re rather dated, and none of
them say the same thing.
NOTE: The term “flushing” refers to repeatedly draining and refilling the trans with Acura Precision Crafted ATF-Z1. Don’t confuse it with aftermarket flush systems. American Honda still strongly recommends that you avoid using them on any Acura vehicle. The original procedure was written for simpler A/Ts that readily upshifted when you ran the vehicle on a lift. But A/Ts have come a long way since then, and most of the newer ones balk at shifting past 2nd gear when on a lift, unless you work the shift lever a certain way. In light of all this, we thought it was high time that the A/T flushing procedure got a facelift. So here’s the latest word on flushing that works for all A/Ts:
1. Set the parking brake, and raise the vehicle on a lift.
2. Drain the trans, and refill it with Acura Precision Crafted ATF-Z1. Refer to the applicable S/M or to ISIS
for details.
3. Start the engine, shift into Drive, and release the parking brake.
4. Push down on the accelerator pedal to raise the vehicle speed to 2,500 rpm.
• If the trans shifts past 2nd gear, go to step 5.
• If the trans won’t shift past 2nd gear, keep the engine speed at 2,500 rpm and shift from Drive to
Neutral and back to Drive. Then go to step 5.
5. Make sure that the trans shifts through all the forward gears and goes into torque converter lockup.
6. Let off the accelerator pedal, and press the brake pedal to drop the vehicle speed to zero. Shift into
Reverse and then into Neutral.
7. Shift into Drive, and repeat steps 4 thru 6 four more times.
8. Set the parking brake, and repeat steps 2 thru 6 two more times.
9. Drain the trans, and reinstall the drain plug with a new sealing washer.
10. Refill the A/T with ATF-Z1.
substitutes). Problem is, where do you find the info to do that? It’s not listed in the S/Ms and if you do an
ISIS search, you’ll find a few ServiceNews articles on this subject, but they’re rather dated, and none of
them say the same thing.
NOTE: The term “flushing” refers to repeatedly draining and refilling the trans with Acura Precision Crafted ATF-Z1. Don’t confuse it with aftermarket flush systems. American Honda still strongly recommends that you avoid using them on any Acura vehicle. The original procedure was written for simpler A/Ts that readily upshifted when you ran the vehicle on a lift. But A/Ts have come a long way since then, and most of the newer ones balk at shifting past 2nd gear when on a lift, unless you work the shift lever a certain way. In light of all this, we thought it was high time that the A/T flushing procedure got a facelift. So here’s the latest word on flushing that works for all A/Ts:
1. Set the parking brake, and raise the vehicle on a lift.
2. Drain the trans, and refill it with Acura Precision Crafted ATF-Z1. Refer to the applicable S/M or to ISIS
for details.
3. Start the engine, shift into Drive, and release the parking brake.
4. Push down on the accelerator pedal to raise the vehicle speed to 2,500 rpm.
• If the trans shifts past 2nd gear, go to step 5.
• If the trans won’t shift past 2nd gear, keep the engine speed at 2,500 rpm and shift from Drive to
Neutral and back to Drive. Then go to step 5.
5. Make sure that the trans shifts through all the forward gears and goes into torque converter lockup.
6. Let off the accelerator pedal, and press the brake pedal to drop the vehicle speed to zero. Shift into
Reverse and then into Neutral.
7. Shift into Drive, and repeat steps 4 thru 6 four more times.
8. Set the parking brake, and repeat steps 2 thru 6 two more times.
9. Drain the trans, and reinstall the drain plug with a new sealing washer.
10. Refill the A/T with ATF-Z1.
#2
Senior Moderator
#4
Senior Moderator
It means to make sure the trans shifts into 1,2,3,4,5th gear. (yes on a lift)
Since most of us dont have a lift, we Drive it around the block a few times. The key is to get it to shift into each gear to help transfer old fluid out and the new in
Since most of us dont have a lift, we Drive it around the block a few times. The key is to get it to shift into each gear to help transfer old fluid out and the new in
#7
Senior Moderator
Originally Posted by wise2k
I believe this is overdrive
TQ Lock up is kinda like a automatics clutch. The TQ converter is what allows you to be at a standstill with the motor running in gear. It helps transmit the power from the motor to the trans. Under pressure and rpm it goes from slip to lock.
If your cruising down the road (like 4th or 5th) and give it gas but not hard enough to change gears you will see the tach rise some, thats the tq converter unlocking.
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#8
Senior Moderator
Here some good reading
http://www.bankspower.com/Tech_understandtorqueconver.
http://www.bankspower.com/Tech_understandtorqueconver.
#10
Moderator
Thread Starter
Originally Posted by mpg2034
So correct me if I'm wrong, but isn't the above procedure the same as the 3x3 drain/fill method? (mind my ignorance)
#11
Senior Moderator
Originally Posted by mpg2034
So correct me if I'm wrong, but isn't the above procedure the same as the 3x3 drain/fill method? (mind my ignorance)
#14
Moderator
Thread Starter
Originally Posted by fsttyms1
Yes, but dealers have lifts and can do it without having to physically drive teh car any where
#16
Senior Moderator
Originally Posted by acitydweller
I see there's no mention of changing the transmission filter located inside the transmission.
#17
Lamborghini Aventador FTW
iTrader: (4)
Originally Posted by fsttyms1
Here some good reading
http://www.bankspower.com/Tech_understandtorqueconver.
http://www.bankspower.com/Tech_understandtorqueconver.
http://www.bankspower.com/Tech_under...ueconver.c f m (with the spaces removed between the c f and m)
#18
Senior Moderator
Originally Posted by AMGala
Thanks Kris! Just FYI, that link doesn't work, it's missing a couple of letters at the end. Here is the full address:
http://www.bankspower.com/Tech_under...ueconver.c f m (with the spaces removed between the c f and m)
http://www.bankspower.com/Tech_under...ueconver.c f m (with the spaces removed between the c f and m)
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