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Toyota Camry Transmission Problems

Q. I have a 1987 Toyota Camry. It has a 4 cylinder engine with automatic transmission and 285,000 miles. It has fuel injection, P/S and A/C. I've been having a problem with the transmission shifting. It is an intermittent problem. Most notably, sometimes when I pull out, it shifts from low right into overdrive and sometime it won't come out of overdrive when on the highway.

Toyota Camry Transmission Problems

Sometimes I'll push the gas pedal to the floor trying to get it to "shift up" and it's like it comes out of gear all together and the engine revs like it's in neutral. I just got it out of the transmission shop today after having a partial rebuild and a rebuilt valve body put in it. I still have the same problem.

The transmission was completely rebuilt about 6 years ago. I've been told this could be a problem with a shift solenoid. If so, is this an easy and inexpensive repair and is the shift solenoid located on the outside or the inside of the transmission?

Could it have anything to do with the engine idle being set too high? I would very much appreciate any advice you could give me.

Thank you,
Steve

A. It is likely the problem is electrical in nature. So the first thing you should do is see if any codes are stored in the Transmission Control Module (TCM). once we know what those codes are, we can go from there.

Here's how to do it.

  1. Turn ignition switch and OD switch to ON. Do not start engine. Note: warning and diagnostic code can be read only when the overdrive switch is ON. If OFF the overdrive light will light continuously and will not blink.

Toyota Camry Transmission Problems

  1. Short DG terminal circuit using a service wire, short the terminals ECT and E1.
  2. read diagnostic code. Read the diagnostic code as indicated by the number of times the OD "OFF" light flashes.
  3. Diagnostic Code

    Toyota Camry Transmission Problems

    1. If the system is operating normally, the light will blink for 0.25 seconds every 0.5 seconds.
    2. In the event of a malfunction, the light will blink for 0.5 seconds every 1.0 seconds. The number of blinks will equal the first number and, after 1.5 second pause, the second number of the two digit diagnostic code. If there are two or more codes, there will be a 2.5 second pause between each.
    3. Remove the service wire from the DG terminal.

NOTE: In the event of several trouble codes occurring simultaneously, indication will begin from the smaller value and continue to the larger.

DIAGNOSTIC CODES:

Toyota Camry Transmission Problems

NOTE: If codes 62, 63 and 64 appear, there is an electrical malfunction in the solenoid. Causes due to mechanical failure, such as a stuck switch, will not appear.

Toyota Camry Transmission Problems

Additional Information provided courtesy of ALLDATA

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