C4R3B34R

lexus ls 400 1992. I bought the car knowing they replaced the catalytic converter with a smaller one, No biggie car worked fine. only issue was if you drove over 70 the car would jerk a little, now 5 months later, sometimes when im driving it semms like it wont go into third gear. it lets me go 40 mph with normal idle then when i got 50 -60 it idles like crazy and it wont shift, then i stop turn the car back on its perfect any idea? also when I step on the break the reverse light on the dash turns on,

I notice that this only happens at night, sometimes when im driving it semms like it wont go into third gear. it lets me go 40 mph with normal idle then when i got 50 -60 it idles like crazy and it wont shift, then i stop turn the car back on its perfect any idea? also when I step on the break the reverse light on the dash turns on, am I trippin that it only happens at night? lol?


ur right it takes t2 fluid, now its t4 , called lexus told me its 100 bucks just for the fluid!! lol, so im going to buy it and have my friend do a flush, I hope it fixes the problem, weird that it happens at night,

JimsGX

Make sure the car is running Toyota T4 fluid only. If you or the previous owner had the fluid changed or added non-T4 fluid to top it off, this could cause a problem. Check the transmission fluid and make sure its full by following the instructions in the owners manual (car needs to be running). If that all checks out, take a look at this tutorial about the wiring harness in the trunk that can cause peculiar problems...

http://www.lexls.com/tutorials/lighting/bulbout.html

C4R3B34R

ur right it takes t2 fluid, now its t4 , called lexus told me its 100 bucks just for the fluid!! lol, so im going to buy it and have my friend do a flush, I hope it fixes the problem, weird that it happens at night,

PureDrifter

iTrader: (10)

local toyota dealer will usually have it cheaper

C4R3B34R

The car has 192k miles with this trans problem, is the car worth $1500?

python

iTrader: (4)

yea...go get it from toyota

C4R3B34R

Ok I drained the tranny completly, change the strainer that came with a casket, filled it up through the dipstick, drove it, and it still wont work!!! grrrr!! now the car works beautiful during the day, but at night it wont change gears, weird as hell!!! im thinking it could be electrical since at night i have to turn on the head lgihts, any ideas?? im afraid to take to the dealership during the day and them tell me ur car is fine, what would you guys do next?

JimsGX

Check the wiring harness in the trunk... I posted a link back in message #2...

C4R3B34R

At this point I will replace the whole wiring harness lol just to make the sob work, but I will follow ur advice! thank you for your help ur awesome!!

BigJohnLs

Seems like us both have the same issue & can't tend to find answers... lucky for you yours still works at night witch I find weird & lucky for me I have a complete engine & transmission sitting around waiting to get installed Hmmm

C4R3B34R

dude I figured it out!!! WOOOOOOOOOo ok, it only works during the day when the headlights are not in use, soooooooooo last night i was driving , and it wasnt changing gears etc, dont tried this at home lol, but i was driving at night, it wouldnt change gears i turn off the headlights and boooooom!! instantly changed into gear lol!!!!!!!, so im driving like im driving a stick shift using my headlights to change my gear lolllllllll im just glad i dont need a new tranny, yay!!!! yay!!! so im going to do that wiring harness thing and if i cant get it to work im just going to take in to lexus and pay them to fix it!! I have like 1k i was going to use on making the car look sick but **** it i rather make it run like a champ, then start for the look,! BTW JIMGX rocks!!!! no homo!

steve2006

Trunk hinge wiring harness,white wire will be broken,30 minute DIY job Costs nothing.