You might referring to vehicle speed sensor? If the sensor reading is not correct shifting performance is affected. Have it scanned to verify the fault, when this one fails, replacement is the only solution.

Check fluid level first and hope a band or a torque converter didn't go bad. When backing in the future, make sure you come to a complete stop before putting in drive for least amount of strain on transmission internal parts and service transmission at recommended intervals. I really don't know how to put a very good spin on this.

Before your replaced your oxygen sensor did you diagnose your vehicle with a scan tool? If you already did that, can you post the extracted trouble code?

P0770 LEXUS - Shift Solenoid E Malfunction

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission will not shift gears.
Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid E valve
- Shift solenoid E valve harness or connectors
- Shift solenoid E valve circuit is open or shorted
P0770 LEXUS Description
The ECM uses the signals from the Throttle Position Sensor and Air–flow Meter to monitor the engagement condition of the lock–up clutch. Then the ECM compares the engagement condition of the lock–up clutch with the lock–up schedule in the ECM memory to detect mechanical trouble of the shift solenoid valve SLU, valve body, torque converter clutch and automatic transmission assembly
When is the code detected?
The P0770 code is detected when Lock–up does not occur when driving in the lock–up range (normal driving at 80 km/h [50 mph]), or lock–up remains ON in the lock–up OFF range.

there is a bolt in the middle of the pulley that you attach a ratchet onto to take the tension off the tensioner pulley. some also have a hole that is square shaped that fit a 3.8 in. ratchet. either way you need some pretty good leverage to take the tension off so the longer the ratchet the better. may use a cheater bar as well. i.e. a pipe on the end of a ratchet

Have you checked fluid level. And does it do it when vehicle is at operating temperature?

i have changed the fluid and yes.i had a valve cover gasket put on and it has done that ever since then dude messed my car up and went out of business

see other question u posted. i answered it already. thanks

the knock sensors are located under the lower intake manifold.

your knock sensor won't affect your trans not shifting into o/d. knock sensor is on the intake plenum but as i said it won't affect the o/d problem in your trans. the knock sensor adjusts the timing so your engine won't knock when you use gasoline of a lower octane level.

A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number....
The first thing to try would be new spark plugs plugs and plug wires. This fixes misfires the majority of the time. If that doesn't help check the rotor and fuel injectors. .....good luck and happy holidays

The ES3000 has the same motor as the RX300. Like Joe says replace the spark plugs. There are not any wires . There are 6 ignition coils. Usually they do not need replaced. Autozone can check them or use a voltage tester to see if you get the same readout then they are o.k.

Yes, it could be coils. Wait until there are more codes That identify the affected cylinders unless you know them. Repost with the add'l info.

If you have code P0300 more likely there is vacuum leak.

You can purchase a scan tool to be able to diagnose your vehicle with it, to verify if you have a stored trouble code and to verify if all your electrical controls and sensors are still functioning well. You can visit this link to see a list of available scan tool http://www.autopartswarehouse.com/search/)

If your transmission doesn’t engage the common (but not limited) causes of it are low or no transmission fluid, worn/damage torque converter splines, worn/damaged pump and worn/damage neutral safety switch.

If you diagnose your vehicle with a scan tool the extracted trouble code will help you find the fault of your vehicle’s problem and you can post the code here.

no idea hir............anyne?.............want tu lern olso.................tnk u fur sharing....................(",)............u

Visually check the exhaust for leaks. Tap the mufflers with a rubber mallet and listen for rattles. Replacing the entire exhaust system may be the best thing to do.