ef9racer

in my 90 ls400 the overdrive light keeps flashing and once the car warms up it will start of in first gear and then jump to fourth and will not kick down. yet i can shift it by hand minus third gear.


what i done so far is changed the tranny fluid and added lucas trans fix today. yet it still does the same thing.


any help will be nice.


thanks
melvin

DaveGS4

iTrader: (2)

I edited your thread title to make it a little more descriptive than 'wtf'....

and I used forum search to look for "overdrive light flash" and found these threads that might be useful

https://www.clublexus.com/forums/ls4...ve+light+flash
https://www.clublexus.com/forums/ls4...ve+light+flash (link in post 11 for code reading might be helpful)
https://www.clublexus.com/forums/ls4...ve+light+flash (you already did this, but other folks will likely ask what fluid you used)

steve2006

You need to pull the OBDI codes for the transmission before doing anything else,once you have these post the results and we will go from there.
First thoughts at the moment are shift solenoids.

http://www.lexls.com/tutorials/intro/codereading.html

ef9racer

thanks guys when it warms up outside i will go check the cel codes.

python

iTrader: (4)

shift solenoid? just guessing

Imperium11

did you read the directions on the trans fix, i think you need to do more than just to add it, i think it also say results may take a couple hundred km to resolve, what colour was your trans fluid in the first place?

willhickey

iTrader: (1)

prolly black thats how mine is mine wont down shift period haha, im going to replace the solenoids one of these days i guess. my guess is if my transmissions having those problems its really time for a new trans anyway (237k)

ef9racer

it is the #2 solenoid
and the color of the new trans fluid is red. i ordered it from toyota themselves, but the old stuff was a real dark red, and smelled like burnt trans fluid.

sethjon

Solenoids for sure.