Transmission slow on 2-3 upshift
01-20-19, 09:24 PM
#1
Driver School Candidate
Thread Starter
Transmission slow on 2-3 upshift
Our 2005 with 160k miles has been doing a strange thing in the last year. It takes twice as long to shift from 2nd to 3rd gear as it does for all of the other gears.
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
Last edited by BadDogMax; 01-20-19 at 09:28 PM.
01-28-19, 10:04 PM
#2
Driver School Candidate
Thread Starter
Bump. Anyone have any experience with this?
On the TacomaWorld forums, there are some transmission experts that post DIY tips for adjusting the different solenoids that control shifting. These can be accessed easily when the pan is removed. I'm hoping to find a similar guide for the RX but no luck so far.
Wife's RX330 trans works perfectly, except for the 2-3 upshift which feels very lazy. I'm hoping there is a relatively simple adjustment that could bring this shift back in line with the others.
On the TacomaWorld forums, there are some transmission experts that post DIY tips for adjusting the different solenoids that control shifting. These can be accessed easily when the pan is removed. I'm hoping to find a similar guide for the RX but no luck so far.
Wife's RX330 trans works perfectly, except for the 2-3 upshift which feels very lazy. I'm hoping there is a relatively simple adjustment that could bring this shift back in line with the others.
01-29-19, 12:56 PM
#3
Bump. Anyone have any experience with this?
On the TacomaWorld forums, there are some transmission experts that post DIY tips for adjusting the different solenoids that control shifting. These can be accessed easily when the pan is removed. I'm hoping to find a similar guide for the RX but no luck so far.
Wife's RX330 trans works perfectly, except for the 2-3 upshift which feels very lazy. I'm hoping there is a relatively simple adjustment that could bring this shift back in line with the others.
On the TacomaWorld forums, there are some transmission experts that post DIY tips for adjusting the different solenoids that control shifting. These can be accessed easily when the pan is removed. I'm hoping to find a similar guide for the RX but no luck so far.
Wife's RX330 trans works perfectly, except for the 2-3 upshift which feels very lazy. I'm hoping there is a relatively simple adjustment that could bring this shift back in line with the others.
Our 2005 with 160k miles has been doing a strange thing in the last year. It takes twice as long to shift from 2nd to 3rd gear as it does for all of the other gears.
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
How are the downshifts from 3 to 2? are they delayed?
Last edited by Koolaid54; 01-29-19 at 01:13 PM.
02-06-19, 06:38 AM
#5
Our 2005 with 160k miles has been doing a strange thing in the last year. It takes twice as long to shift from 2nd to 3rd gear as it does for all of the other gears.
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
With hard acceleration it seems ok, but the more gentle you are with the gas pedal, the longer the shift seems to take.
If I understand it correctly, with this transmission/engine combo the engine computer waits for the shift to complete before it accelerates in order to avoid damaging the transmission (common on RX300 models).
So what happens is that if you give it just a little gas, it will take about 1/2 second for the 1/2 shift, then 1 to 2 seconds for the 2-3 shift, then 1/2 second for the 3-4 shift etc.
And while the engine is waiting for the shift, there is an odd pause in engine revs which sometimes causes the driver to give it more gas and then the trans abruptly shifts to 3rd with a bump.
Ideas? Trans fluid has been flushed, and I just did it again this weekend (2X drain and fill, 4 quarts each, 100 miles of driving in between changes). The fluid does not look too bad and is at the factory level (a little over the HOT mark when idling in park and hot).
Thanks in advance...
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