Whining engine noise
05-31-23, 10:49 AM
#16
Driver
Thread Starter
I first discovered the video in post #10 above a couple of years ago before I did my first series of ATF drain-and-fills on my wife's 2015 RX350 FWD with the U660E transmission as shown in the video. I had an e-mail exchange with Mike (the presenter in the video) and essentially decided afterwards that in order to allow these rather mediocre units to achieve the longest possible lifespan without failing, the following rules must be followed:
1. Do not drive this vehicle like a race car, meaning no jackrabbit starts and stops.
2. Do not drive this vehicle like a 4x4 all-terrain rock-climber, meaning stay on reasonable road surfaces.
3. Do not tow with this vehicle (even though it was built with the heavy-duty towing package).
4. Do the series of three ATF drain-and-fills at least every 50,000 to 60,000 miles (or sooner if you prefer to be more conservative).
5. Regularly check underneath the vehicle for ATF leaks on the driveway or garage floor.
My wife's 2015 RX350 FWD is now approaching 90,000 miles and continues to perform exactly as designed. I attribute some of that level of success to her relatively conservative driving habits, and I hope her vehicle will remain trouble-free and can therefore remain in our stable for years to come. Time will tell.
1. Do not drive this vehicle like a race car, meaning no jackrabbit starts and stops.
2. Do not drive this vehicle like a 4x4 all-terrain rock-climber, meaning stay on reasonable road surfaces.
3. Do not tow with this vehicle (even though it was built with the heavy-duty towing package).
4. Do the series of three ATF drain-and-fills at least every 50,000 to 60,000 miles (or sooner if you prefer to be more conservative).
5. Regularly check underneath the vehicle for ATF leaks on the driveway or garage floor.
My wife's 2015 RX350 FWD is now approaching 90,000 miles and continues to perform exactly as designed. I attribute some of that level of success to her relatively conservative driving habits, and I hope her vehicle will remain trouble-free and can therefore remain in our stable for years to come. Time will tell.
06-11-23, 03:50 AM
#17
Driver
Thread Starter
Yesterday we changed the strainer, gasket and put six quarts of new WS transmission oil. So far so good.
Nothing seen in the strainer and it looked clean. Nothing found in the sump either and around the magnets were clean. I suspect the oil level was low and hence the terrible sound similar to that of a table top saw. Mechanic said it could have been starving for oil.
Nothing seen in the strainer and it looked clean. Nothing found in the sump either and around the magnets were clean. I suspect the oil level was low and hence the terrible sound similar to that of a table top saw. Mechanic said it could have been starving for oil.
06-11-23, 05:08 AM
#19
Moderator
So during one of your previous transmisson fluid changes by a shop they apparently underfilled the transmission. These transmissions are very sensiitive to fluid level.
How did you check that the fluid level was correct?
Toyota could have installed a dip stick but chose not to. Maybe to boost dealer revenue...
How did you check that the fluid level was correct?
Toyota could have installed a dip stick but chose not to. Maybe to boost dealer revenue...
06-15-23, 02:46 AM
#21
Driver
Thread Starter
A toyota mechanic did the work. He dropped the pan, changed the strainer, gasket and refilled the oil. I then started the car, applied the brakes and shifted through the gears whilst he did something under the car. I assumed he was checking and adjusting the level.
It could be mind over matter but I think I might be hearing the whining sound again. I'm schedule to see a transmission specialist tomorrow. We'll put the car up on a lift again, and gently accelerate to confirm.
It could be mind over matter but I think I might be hearing the whining sound again. I'm schedule to see a transmission specialist tomorrow. We'll put the car up on a lift again, and gently accelerate to confirm.
Last edited by Sweeks2020; 06-22-23 at 06:00 AM.
06-15-23, 02:56 PM
#22
Moderator
He probably used an infrared temperature reader to check the temperature of the fluid and watch the overflow tube flow to determine when to insert the drain plug.
06-22-23, 05:54 AM
#24
Driver
Thread Starter
Quick Update: On Saturday, I visited another transmission specialist. They drove the car, put it up on the list and gently accelerated.
The loud whinning (table-top saw) sound wasn't there anymore. However after showing them the old strainer/filter, they indicated that the filter was restricted, that it started to break down and the fibre particles were letting go. I was advised to flush the transmission and replace the new filter and o-ring. I will do so in approximately a month as I have to import the parts into the county.
The loud whinning (table-top saw) sound wasn't there anymore. However after showing them the old strainer/filter, they indicated that the filter was restricted, that it started to break down and the fibre particles were letting go. I was advised to flush the transmission and replace the new filter and o-ring. I will do so in approximately a month as I have to import the parts into the county.
Last edited by Sweeks2020; 06-22-23 at 05:58 AM.
06-22-23, 05:59 AM
#25
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