Lazy transmission.

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Aug 9, 2002 | 04:47 PM

rtc1978

Thread Starter

Driver School Candidate

Joined: Jul 2002

Posts: 16

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From: CT.

Lazy transmission.

I need some advice guys. Ever since I got my P.I T/C installed my trasmission shifts a little lazy when I drive it hard, but mainly just from 1st to 2nd. When I say lazy I mean it tends to slide through the gears. Anyone got any ideas how to cure this? I saw the valve body upgrade by R.M.M but I hate to spend a G on it. Has anyone got the valve body upgrade and was it worth the money? To anyone who knows about valve bodys, is this a good investment(in other words is it worth money) I would apperciate the advice get back to me. Thanx!

Aug 9, 2002 | 09:05 PM

GS430 GUY

Lexus Test Driver

Joined: Feb 2001

Posts: 1,045

Likes: 0

From: New York

Do you pull the ECU-B fuse? If not I recommend pulling it for 30 minutes and see if there is a difference and cures ya problem. Otherwise I myself have noticed it shifts lazy at around 30-35 mph when I have the car in "D", I keep the car in "4" to get rid of this problem, since I think it is when the car goes from 4th to 5th under light acceleration. I have never experienced a lazy shift from 1st to 2nd when flooring the car though, just pull the ECU-B fuse every two weeks.

Aug 11, 2002 | 07:55 PM

itsallgood

Lead Lap

Joined: Feb 2001

Posts: 458

Likes: 0

From: Kailua, Oahu

Your transmission should feel like that. Its due to the stall in the TC. As for the valve body I'm currently upgrading it through SRT.

Aloha

Aug 12, 2002 | 03:33 PM

Shinchan

Lead Lap

Joined: Aug 2001

Posts: 660

Likes: 2

From: Massachusetts

Hmm.. My car does n't feel like that when i am pushing it hard with VSC Off.. burn the tire a bit.. and LSD takes over.. and shift aggressively...

Aug 19, 2002 | 08:16 PM

indypwr

Pole Position

Joined: Mar 2002

Posts: 3,462

Likes: 2

From: California

GS430 GUY

WHAT DOES IT DO WHEN U PULL SUCH FUSE??..
JUST CURE THE PROBLEM OR WILL IT HELP SHIFT A LOT BETTER?

TKS...

Aug 19, 2002 | 11:02 PM

GS430 GUY

Lexus Test Driver

Joined: Feb 2001

Posts: 1,045

Likes: 0

From: New York

Re: GS430 GUY

Quote:

Originally posted by indypwr
WHAT DOES IT DO WHEN U PULL SUCH FUSE??..
JUST CURE THE PROBLEM OR WILL IT HELP SHIFT A LOT BETTER?

TKS...

I don't get any hesitation by the car's ECU on deciding which gear to go into. It goes into the lower gear all the time on my car. So instead of deciding on 2nd or 3rd when I am going say 30 and gun it, the car drops into 2nd and hauls butt. My car is modded so I am not sure this would happen on a stock car, but it's worth a try IMO. I pull the ECU-B fuse every 2 weeks, just a habit and keeps the car on its heels so to speak.