transmission issues??
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Driver School Candidate
Joined: Apr 2006
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From: nc
transmission issues??
Has anybody had a slight kick(hard shift) when accelerating from a stop light?? I'm trying to diagnose the problem but i don't know where to start. I have clean transmission fluid. it dosen't do it all the time mostly on strong accelerations.Anybody have this problem??
Lexus Champion
Joined: Nov 2003
Posts: 1,691
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From: St. Petersburg, Florida
Are you trying to run hard on a cold engine/tranny? The computer will hold 2nd gear longer when the engine/tranny hasn't warmed up. Do a search in the Transmission forum and you'll see lots of threads on this topic.
Intermediate
Joined: Jun 2005
Posts: 375
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From: MA
lexus' have MINIMAL problems with trannys from my experience. I sometimes get a hard downshift while pulling into my driveway after driving her hard, which i think is caused by the low idle problem.(or she's just pissed 'cause I was beating on her 
) is it downshifting hard too, or just hard upshifts??
) is it downshifting hard too, or just hard upshifts??
I have the same problem,, but when starting from a dead stop (starting off slow) I feel a noticeable shift / pull in first gear, if I accelarate a little harder (moving with / ahead of traffic) I dont feel anything every gear change is smooth. maybe I'm over reacting
Driver
Joined: Jan 2005
Posts: 184
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From: AZ
Tranny Issue! I had same thing and cured it-for nothing.
I had a similar thing happend a couple of months ago. It turned out to be a loose battery lead-yes I am serious! When I pulled away the engine would flex in the mounts, the battery would not and the movement in between the two was enough to "stall" the engine for a millisecond and cause a transmission jerk.
When I checked the terminals on both + & - were loose. It costs you nothing to check and mine has been back to flawless for the last couple of months.
Machog
When I checked the terminals on both + & - were loose. It costs you nothing to check and mine has been back to flawless for the last couple of months.
Machog
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Pole Position
Joined: Jun 2006
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From: usa
Originally Posted by REG99GS3
Has anybody had a slight kick(hard shift) when accelerating from a stop light?? I'm trying to diagnose the problem but i don't know where to start. I have clean transmission fluid. it dosen't do it all the time mostly on strong accelerations.Anybody have this problem??
hey man, i noticed the same thing on my gs4 the other day....when i am at a complete stop or going very slowly and then hit the gas....the tranny seems to jerk when it is shifting into the next gear.....hmmm...im gonna have my mechanic check it out.....lemme know what you find out and ill do the same...
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Driver School Candidate
Joined: Aug 2005
Posts: 18
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From: New York
they ripped me
i had the same problem on the second gear so i took it to ammco transmission they did their little diagnostic it took them like 4 days to do this. then they tell me a whole bunch of stuff thats i didnt understand abou the oil being dirty and that certain parts need it to be replace well i know that i it was gonna come out to like 3 grand so i was like 
oh my god i had a extended warranty and they suggested to get a used tranny they had from another GS i`ve never checked to see if they actually did change the tranny but it works fine now and im happy with it
oh my god i had a extended warranty and they suggested to get a used tranny they had from another GS i`ve never checked to see if they actually did change the tranny but it works fine now and im happy with it
Pole Position
Joined: Jun 2006
Posts: 309
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From: usa
Originally Posted by phantastik
i had the same problem on the second gear so i took it to ammco transmission they did their little diagnostic it took them like 4 days to do this. then they tell me a whole bunch of stuff thats i didnt understand abou the oil being dirty and that certain parts need it to be replace well i know that i it was gonna come out to like 3 grand so i was like oh my god i had a extended warranty and they suggested to get a used tranny they had from another GS i`ve never checked to see if they actually did change the tranny but it works fine now and im happy with it
oh my god i had a extended warranty and they suggested to get a used tranny they had from another GS i`ve never checked to see if they actually did change the tranny but it works fine now and im happy with it
Lexus Champion
Joined: Nov 2003
Posts: 1,691
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From: St. Petersburg, Florida
Originally Posted by eman88
seems like when the car warms up. the problem / issue is gone.....I'll keep checking every day
https://www.clublexus.com/forums/sho...+tranny+warmup
https://www.clublexus.com/forums/sho...+tranny+warmup
Driver
Joined: Jul 2005
Posts: 197
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From: England, UK
This normally happens on my Aristo whenever I'm in traffic, but I've noticed that if I turn off the power mode it doesn't seem to "jerk" forward. Do you have your power mode set to on when it does this? Under normal I don't get any of it.
Driver School Candidate
Joined: Aug 2004
Posts: 14
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From: Virginia
Figured out anything on this
Skeet I seem to have a similar issue...mine seems to buck at me on occasion when I am off the gas, but not on the brake...but as with you it seems to behave better if I turn off the power mode..did you figure out anything as far as a cause?
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