Transmission additives

Hi,

There are many different products to enhance the shifting of automatic transmissions. However, I don't know of any one specifically for something stuck in the valve body. Products manufacturers such as Lucas, Prolong, Lubeguard, BG, and so on are helpful for certain things, However, I question if they will do what you need.

Can you tell me what is happening? Has the transmission been serviced recently with a new filter and gasket?

Let me know.
Joe

Has the transmission been serviced? I could be a shift solenoid that is hanging up due to dirt. I have the tests for the solenoids if you feel confident testing, but it will require some basic electrical testing. Here are the directions. The attached pics correlate with the directions.

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1993 Toyota Camry Sedan L4-132 2164cc 2.2L DOHC (5S-FE)
Shift Solenoids
Vehicle Powertrain Management Transmission Control Systems Actuators and Solenoids - Transmission and Drivetrain Actuators and Solenoids - A/T Shift Solenoid Testing and Inspection Component Tests and General Diagnostics Shift Solenoids
SHIFT SOLENOIDS
Connector ID

Pic 1

Inspect Solenoid Resistance
- Disconnect the connector from Engine and ECT ECU.
- Measure the resistance between S1, S2, SL and body ground.

Resistance: 11 - 15 ohms

- Apply battery voltage to each terminal.
- Check that an operation noise can be heard from the solenoid.

Solenoid Inspection

Pic 2

Check Solenoid Operation
- If there is foreign material in the solenoid valve, there will be no fluid control even with solenoid operation.
- Check No. 1, No. 2 and lock-up solenoid valves.
- Apply 490 kPa (5 kg/cm2, 71 psi) of compressed air, check that the solenoid valves do not leak the air.
- When battery voltage is supplied to the solenoids, check that the solenoid valves open and air flows.
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Here are a couple links you may find helpful:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Let me know.

Take care,
Joe

The idea of getting a heavier viscosity isn't relevant to ATF. People would use a heavier oil in the engine with hopes of fixing ticks, knocks, low oil pressure and so on. However, not in a transmission. Actually, it will make things worse.

If you look at the picture below, it shows what can be used and what shouldn't.

Let me know if this helps. I still suspect there is a solenoid issue. Did you ever have the chance to check?

Joe

Is it still doing the same thing? Have you ever had the computer scanned which may point us in the right directions?

Joe

Hi,

It can be scanned. Follow this link. You don't need a scanner.

https://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995

Let me know what you find.

Joe

You are very welcome. Let me know what you find. I'm interested in knowing.

Joe

Glad to hear it. The code is for the number 1 shift solenoid. Normally, it reflects an electrical issue, but if things are working properly, lets keep our fingers crossed. Let me know if anything changes.

Take care,
Joe