GS300_1996

hi guys,

I am new in here, I just bought a 1996 GS300, car is very nice and its like a dream i am leaving right now since i've been looking for 1 since long time.

yeserday i was on highway and noticed rpm at around 2700 at 100 kmph or 60 mph. question is if it is normal?
guys with the 5 speed tranny running at those rpms?

thanks for ur input

Lexatlast

iTrader: (5)

i had something of the same problem. My car wouldn't recognize that it should move to the next gear and stayed at high rpms 50mph and up. For me the problem was my ECU, and its hard to tell cause it didn't throw any codes.

GS300_1996

thanks for your reply Lexatlast,
so did u replace your ecu?
were u missing only the last gear?

Lexatlast

iTrader: (5)

i did replace the ecu and that fixed the problem, but again, it could be your tranny, a solenoid, or the ecu. PITA it was to figure out.

Does it sometimes go down to around 2K rpms when you're at 60mph? Because when I had this problem i'd say 5% of the time it worked how it was supposed to and 95% of the time it was at high revs.

I knew mine was the ECU because sometimes it worked fine, like its supposed to.

GS300_1996

it never went down to 2k for me so far, I have the car since wednesday.
how did u get to know it was the ecu?
is it possible to check with obdII scanner?

GS300_1996

anyone else had problems with this.
I am missing lockup only or last gear?
guys with 1996 5 spd, what rpm u guys running at at 60mph?

Dan@FSM

I have an ecu out of my 96 for sale if you need it. Email me.

GS300_1996

thanks for the offer Dan@FSM, for now I am only trying to figure out what might be wrong, will let you know if ever need it
tuesday, will flush tranny fluid and see what happens

GS300_1996

guys with this year car tranny engine, can you please post your engine rpm range at speed around 60-70 mph
i went to a tranny shop today and they say this is normal

monkiwrnch

iTrader: (1)

i think i have the same problem. car wont lock-up or go to 4th gear. mine is a 93 with 118XXX miles. i notice it after i took of the battery for almost 8 hours to be re-charged. when i put it back on. an drove it home i notice. im at 3800rpm doing 75mph. i thought its kinda wierd. so i started playing with the o/d botton and it's not down shifting. but when i turned the a/c on then it shifted to the final gear, and when i hit o/d it down shifted.but when i turn off the a/c it dosent lock-up again. im not sure if my ecu needs to be reset, by taking off the EFI Fuse. ill try it tomorrow. hopefully nothings wrong with my tranny.

hawaiidude

wow i had the same problem in my car, yesterday when i was going to work, my car was going up a hill and it was rolling back when it was in a drive position. so i turned off my car and played with the gears then it finally started running, then i was going like 20-30mph and my rpm was like 6k. so right now my car is suck at lexus because i work right next to dem, they said it might be my tranny slipping

monkiwrnch

iTrader: (1)

i reset my ecu this morning before going to work and the problem went away!!!! c

Lexatlast

iTrader: (5)

^^

that doesn't mean it will stay that way, but if it happens again, at least you'll be sure it was the ECU

as to lexus saying the tranny is slipping, you should be able to feel it slip, like your car tries to make the next gear and then can't hold it or just jumps back up. If it doesn't even try to, the problem is the ECU. I had this exact problem when I got my car. The reason it got confusing for me was because the ECU would work sometimes, making it rev where it was supposed to, then it would jump up to high revs out of nowhere. Thats why I was confused if it was slipping or if it was the ECU.

end of the day, it was the ECU. I'd get that changed before thinking its the tranny.