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Anonymous Posted on Feb 08, 2018

My 93 LS400 defaulted to 3rd gear. Does anyone know whats wrong

My car will not get out of 3rd gear. It starts in 3rd and will not pop into 4th. Now I can go into manual shift and shift between 1st and 3rd but still cant get it into 4th. im thinking its a sensor or something. also my check engine light has come on and it is a bear to start when its cold

2 Answers

vince

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  • Lexus Master 2,530 Answers
  • Posted on Feb 08, 2018
 vince
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All Toyota/Lexus transmissions are 4-speed transmissions (in the 1st Generation 1989 to 1994 Lexus LS)
all are ECU (computer) controlled.
Take it in and have a shop scan it. Most likely a problem with the ECU.
a quick look around ECU's for 199 to 399.
hope this helps a little.

Rigger DeBusk

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  • Lexus Master 1,811 Answers
  • Posted on Feb 08, 2018
Rigger DeBusk
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Now, I'm not saying this is a fact, but my TH700R4 trans did that very thing, wouldn't come out of third. And with no 3rd it won't go to overdrive. I rebuilt the trans and found the overdrive drum was all scarred and caused the limp home thing to happen, third gear was as high as it would go. I suggest you have the trans checked out by a professional trans shop. As for it being a bear to start, that's a faulty temperature sensor. If it's not functioning, the computer doesn't know to put it into cold start mode, which increases the throttle speed and puts more fuel in the engine for starting when cold. Like a automatic choke system in earlier vehicles.

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5 Related Answers

Anonymous

  • 1489 Answers
  • Posted on May 05, 2009

SOURCE: transmission won't shift to 2nd and 3rd gears goes from 1st to 4th.

Doesn't sound like a simple fix. I would suggest having it serviced.

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Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on May 07, 2009

SOURCE: 4l60e slips in 3rd and 4th

There are to many things that can cause this problem, best thing to is go get the ECM scanned for DTC codes at a transmission shop or Auto zone or Parts Source since they scan for free.
The ECM should have DTC code in it's memory on how the transmission is Performing and have the Transmission line tested for Fluid pressure.
Good luck and hope this helps. Oh and also ways check with more then on transmission shop if there tell you that you need a new Transmission,
It could be a simple as the transmission filter falling off causing the lost of transmission fluid pressure. Check the transmission fluid too.

Anonymous

  • 1 Answer
  • Posted on Feb 12, 2010

SOURCE: Hang up in third gear loss of power

Hi All

I have a s40 1.9d / 2000 plate,
In the last month or so the car loses revs when changing up to 3rd and 4th gear, I can only get 50 mph max in 3rd gear 80mp in 4th.
The car has just clocked 185,000 miles
Its a great car but a pai at the moment, I've had a service including fuel fillter change added fuel cleaners to the deilsel all to no avail


Any suggestions

Anonymous

  • 1 Answer
  • Posted on Feb 18, 2010

SOURCE: I have Jeep GC from 2000 with 4.0 engine, and

i have this same problem with my jeep. i am going to change the shift solenoid out.

Anonymous

  • 144 Answers
  • Posted on Jan 01, 2011

SOURCE: I have a 1999 grand cherokee. The check engine

Hi, Your like your jeep is in limp in mode, this is to keep you from burning up transmission and to get you some were off the road, the p1768 code means A/T Transmission Relay Output Always Off. This should be checked out by your local shop or dealer. but you should make sure that the fluid level is correct, if to low there is not enough fluid pressure for the solenoid's to engage the relays. Hope this can help you out. If i can help you anymore fell free to re post.
Thanks dodge tec

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The car has just clocked 185,000 miles
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