When taking off in 1st gear or if trans is downshifted (automatic trans) to 1st the trans seems to disengage with noise. How ever the trans is still pulling with two wheels. Is this a trans controller problem or a problem with the actuator motor
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The short answer, yes. M46 models with the type J or P overdrive (depending on year and market) require a certain level of oil in the overdrive. Additionally, the overdrive is a lot like a standard automatic transmission with one gear range in theory of operation. Therefore, the hydraulic properties of said transmission do come into play here, line pressure, shifting pressure, accumulator and piston function all work together to engage or disengage the unit. Always ensure the unit is disengaged before downshifting and of course, shifting into low reverse.
Hello! TapShift is very easy to use. First you have to put the console shifter in "M", at that point you are disengaging the automatic shifting in the transmission. If you're at a stop, the TapShift will default to 1st gear, if you're driving, it will determine the current gear and assume it. To shift using the paddles, you push them forward to upshift, and pull back to downshift. You can use either paddle individually, or together.
I will bet it grinds when you try to engage first or reverse. When this happened on my car, I adjusted the clutch and it improved. You need about a half inch of free play when you first touch the pedal with your foot. If you have a slave cylinder, (hydraulic clutch). You may need to bleed the system. With air in the system, you can't get enough clutch to fully disengage the trans from the motor.(Clutch and pressure plate) It's like you only pushed down half way on the pedal. If it's not hydraulic, it should be adjusted with wrenches. If clutch is fine, It could be a loose shift linkage. It would seem extra sloppy when moving shifter, It would just not go in gear, with out the grinding.Hope this helps. lbreen
You are likely correct...sounds like the synchro is shot or the shift fork is somewhat worn. Is fluid full? As long as the clutch does not slip and is engaging and disengaging somewhere in the center to just below center of travel, it's OK.
1st u need to have the transmission control module tested for trouble codes, this trans is electronically controlled, a defective sift solenoid can cause this as well as a number of defective other parts such as the throttle control valve..
Power drive delays the shift points for upshift of the automatic transmission. It will degrade fuel economy, but you'll get more peppy performance.
Winter drive will only engage if the vehicle speed is below a certain threshold (I think 23 miles per hour) - and only if the vehicle is in Reverse, Neutral, or Drive. It causes the automatic transmission to start off in 3rd gear (rather than 1st gear). The purpose is to provide power, but not torque to the tires. In winter driving, torque increases the probablility of the tires spinning. The vehicle will seem to be VERY sluggish when winter driving is engaged - which is completely normal behaviour. It will automatically disengage when vehicle speed increases above the threshold.
All Toyota auto trans cars downshift when descending a hill when you tap the brake. This is called "Downhill Shift Logic"; what this is for is to eliminate the double shift when you come to the bottom of a hill and then accelerate. Normal condition. Usually happens above 38 MPH.
Also: The cruise will accelerate when going uphill. Normal condition.Plus: The cruise will not disengage back to the set MPH after you top the hill. Toyota recommends to disengage the cruise when encountering steep terrain.