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Is not a circuited overdrive as far as I can tell. OD is selected via the column shifter and there is not an on/off button for it.Is not a circuited overdrive as far as I can tell. OD is selected via the column shifter and there is not an on/off button for it.
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Sounds like it is stuck in second gear. Overdrive only drops rpm by a couple hundred. In third gears you should still be less than 3,000 rpm.
Second gear is a default gear when the transmission is in limp mode. Is the check engine light on? Does it shift if you manual shift through the gears with the gear selector?
Hello, some models have an O/D indicator light on the dashboard, if it is on or the selector is set to the O/D position and it is working correctly you sill see a slight decrease of engine rpm between about 45 and 65 mph depending on throttle application, it usually drops about 300 rpm when overdrive is engaged, if the rpm stays the same as speed is increased above 50 mph the O/D is not working.
Hello. Welcome to FixYa. I am Toyota Ed, and I will be assisting you today.
The Overdrive function allows the transmission to shift an extra time, sort of like selecting 5th gear in a 5 speed manual transmission. The Overdrive, when used, will save you gas, as the engine is no longer maintaining a high RPM at normal driving speed. Look at the tach whilst driving about 45 mph, and engage/disengage the OD. You will see the tach RPM raise when the OD is off.
More RPM = lower fuel mileage,
The ECT is a different circumstance. The ECT button is used primarily when you have a heavy load in the car, or are towing something. All the ECT button does, when it is engaged, is lengthen the shift points as the transmission upshifts. Normally, the transaxle will shift into 2nd gear at 18-21 mph. When the ECT is engaged, the transaxle will shift in the area of 22 -24 mph. In short, the ECT just makes the time to the 1-2 and the 2-3 upshift longer, to compensate for the additional load being carried/towed.
As a response to solution #1 these cars do have an overdrive while in D-4, mine was shifting in and out at 70 mph until it finally quit and the rpm is now 3100 at 70 mph insted of 2700. The car still shifts 4 full times just not the fifth-OD. I still can't find out what fixes this problem either.
That is normal,If you do the same speed in 4th gear the rpm's will almost double.
The rpm's will repond faster in a manual than an automatic.
In a manual the engine supplies the power required directly to the gear that you have selected thus the engine rpm's will increase or decrease as needed.
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