Toyota 1991 previa automatic transmission shift lock selenoid

SOURCE: 1998 TOYOTA 4 RUNNER SHIFT SELENOID

Shift solenoid E is considered the dead solenoid //// cheaper to replace trans

SOURCE: 2000 toyota echo, transmission won't shift to 4th

First thing to do is check the fluid level if that ok you may want to think about having the transmission filter and fluid changed, there are other possibilities but check these first

SOURCE: automatic transmission won't upshift

has something stuck between the linkage visually inspect it as well as check the gear oil level hmmm check the vacuum line going to it ..ensure it is connected and not dry-rotted causing a leak

SOURCE: Automatic Transmission locked in park. Will not

Sounds like the shift lock solenoid is not working, there could be a couple of different things cousing this. First thing I would check is the brake light switch witch is located under the dash on the brake pedal assy.. The second thing it could be is the shift lock solenoid its self, wich is located around or near the shifter.

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SOURCE: 91 Toyota Previa AWD - Swap original engine for Previa Supercharged engine

I do a lot of work on Toyota Previa before; including rebuilt engine, swapping engine and transmission and lot of things in between, but never swap a normal aspirated engine to a supercharged engine or diesel. Since i have some experience in Previa, I would like to share my opinion with you regarding your plan to swapping the normal aspirated Previa engine to a Supercharged engine. When you do a swapp like that, you will not only be dealing with just swapping engine, but some wiring, computer, throttle body, air cleaner assembly, extra frame and pulley on the accessory items, transmission as well as a right rear end to get the correct gear ratio to accomodate the new engine and transmission. I can go on even more, but let me tell you this, beside less headache, it would definitely cheaper if you were to find a Supercharged Previa and fix it up. However, if you are totally motivated to do this project, keep in mind, this engine swap will be a long term and time consuming project.l I wish you best of luck and have fun!