captaincru

2002 GS300

When stopping then accelerating kinda fast, like at an intersection or stop sign, I get absolutely no power. Kind of dangerous if I'm trying to get out before traffic comes.

Was told it was the YAW sensor and had it replaced, but it still does it.

Seems like it will not down-shift correctly.

I played with it in a parking lot last night and sometimes it would do fine, squeel the tires . . . . and other times not.

I've also noticed that when moving in slow traffic there is a hesitation between 1st and 2nd. Also, if coasting downhill from a stop (no throttle) I get a hard shift from 1 to 2.

Any ideas as to what I need to look for? I've been told that Toyota transmissions are extremely dependable, but right now it I'm leaning toward something there.

GSteg

iTrader: (15)

Yup. best place is to start with fluid. Drive around the city for about 10-15 minutes and then park the car with the engine idling. THEN check the dipstick to get a more accurate reading. Dont rely on the cold reading.

habeeb89

iTrader: (3)

Simple problem might be the transmission needing to learn your driving style and adjust the shift points. Try taking the EFI fuse and/or negative battery terminal for 15 minutes and then drive it hard. It worked for me a lot of times.

Mr Jokster

iTrader: (8)

? the GS can adjust its own shift points?

Rezaxxed

iTrader: (8)

Can anybody confirm this?

Mr Jokster

iTrader: (8)

I have to say... no way! It takes a tune to change shift points... I know Lexus is suppose to be special, but I dont think they're THAT special...

KNEXX

iTrader: (1)

repost: https://www.clublexus.com/forums/gs-2nd-gen-1998-2005/53128-acceleration-hesitation-problem.html

I had the same issue, bc I heard a rumor that the fuel grade didnt matter. Trying to save money will cost your more in the long run. As for the ecu changing to suit your driving style. I have to say its true, bc I drive the S outta this car. When I got it drove like it was in a parade.

captaincru

Would MAF malfunction be a factor? Shouldn't I get a CEL if so?

rl9010

I agree...I got my gs300 used and did this and it made the car feel more lively.

captaincru

I had another throttle body put on. Was told the other one was bad causing the delay. It did help, but I still get a throttle response delay. I notice it most easing around in a parking lot, in a subdivision with a lot of stop signs or in stop and go traffic. Sometimes, there's no delay and sometimes there is.

I think I'll replace the MAS (mass air sensor) and see if that helps.

waxman

iTrader: (1)

????? did you changed your break pad recently.

sakataj

iTrader: (182)

im missing why that would cause his loss of power after he stops....i mean unless the pads are sticking due to the rotors due to faulty/frozen calipers but that doesnt sound like what he's describing

GS4_Fiend

iTrader: (22)

+1

GS4_Fiend

iTrader: (22)

When the MAF sensor goes bad, CEL will come on.