eratic changing auto in 98 camry

Hi peoples im new here and need some help after weeks & lots of dollars my trans is still playing up,
Its had the shift solenoids changed new valve body and even a new computer the trans bloke said he's checked every thing possible, he's also telling me that the info going in to computer is steady but when it comes out it pick's random gears....

Help

Matty

Don't those trannys use varying electronic resistance to choose gears? Sounds like a ground or electronic issue to me. A loose wire or bad ground would cause very erratic outputs.

I would also check the TPS for proper output since the computer uses this as one of the main sources of info.

Don't those trannys use varying electronic resistance to choose gears? Sounds like a ground or electronic issue to me. A loose wire or bad ground would cause very erratic outputs.

I would also check the TPS for proper output since the computer uses this as one of the main sources of info.
Tps checked and ok even changed it over,loose wire or bad ground might be the go.

Cheers

Matt