My 96 Toyota Avalon won't engage in any gears?

OK , old 23 year , TOY
automatic trans,
not told is if DRIVE fails, and if fails what it does.
does it up-shift at all? or stuck in 1st gear,?
we cant drive your car, to see all that..
find a shop ask them for diagnose it.
it can be the transmission or engine , the latter super weak.
only tech can know what to do and find cause.
scan the PCM yet?
miles on car not told, or engine/trans./?
250,000 miles?

There is not a lot of information here to work with. Does it engage in drive in any gear 3 2 anything? if no then take it to a transmission shop for diagnosis.

Here's the repair guide for the 96 Camry,it's the same as the Avalon.I would use a OEM fuel pump,cost more but they will last way longer and they connect right up,no wire splicing and hose rework.

It sounds like you have a bad actuator. This is attached to the starter and has a solonoid that pushes the starter motor gears into the engine gear. If the solonoid is faulty this may happen. Also check alignment of the same.

THE SHIFTER GAS A HARD PLASTIC BOOT EITHER ON THE TOP RIGHT OR LEFT OF THE BOOT OR PLASTIC SQUARE THERE SHOULD BE A SMALL PLASTIC PIECE USE FLAT HEAD SCREWDRIVER PRY UP THE LITTLE SQUARE THEN STICK SCREWDRIVER IN HOLE WHILE HOLDING FOOT ON BRAKE WHILE DOING BOTH OF THOSE THINGS SHIFT VEHICLE THIS LITTLE SQUARE IS CALLED THE SHIFT LOCK OVERRIDE

Sometimes CV joints develop bad harmonics when they are out of sync with each other in a certain way. It passes, until they line up just right to start vibrating again. Bad design.

Replacing the starter on a 96 Avalon is incredibly simple. I did it in the parking lot of a store. Just bring your ratchet set and you will be good to go. I took out the old starter, had a friend bring me to autozone and I bought a new one. Its easy to locate, easy to remove and easy to install.

If you are looking at the motor from the front, the starter is on the right, about mid-way down the block. I dont know if you are handy att at all with tools, but replacing it is very simple. I am no mechanic and I was able to replace it in the parking lot of a store. All you need is a ratchet set. Get a picture of what a starter looks like, locate it, then unbolt it. Get someone to drive you to an Autozone, Pepboys, Etc...They should have one for (I believe) 140. Just literally slide it back into the slot and rebolt it. It is much easier than you might imagine and much cheaper than Toyota.

Check at OBD II port and post back what codes you get. Shifting is done by Solenoids on/in the transmission. Reverse could be a Linkage problem also if no codes are present.

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Avalon