What are these?
Wow a blast from the past.
google finds that, or the 93 service manual
31 = maf dead.
41 = tps sensor bad.
2 no 2
12 = RPM #1 signal dead, (CKP dead?)
google finds it
http://www.lexls.com/tutorials/intro/codereading.html
SOURCE: 1994 lexus ls 400 problem with dash board light
Try rotating the ignition switch slightly after you turn it to on and see if the lights come on...had the same problem and changed the switch fixed the problem...
SOURCE: 93 lexus LS 400 how do I replace the fuel pump?
You will have to remove your back seat to gain access to fuel pump. Fuel tank is located in trunk. No need to take fuel tank down.
SOURCE: 92 lexus ls 400 check engine and traction control light came on at the same time, 92 lexus ls 400.
the track off light will come everytime yhe check engine light comes on. this is normal. you need to have the check engine light checked first.you can go to your local parts house they will scan it for so you at least see what area you problem is in and then you can start from there. let me know lf you find out youe engine codes.
SOURCE: Fuse Box ( cover) diagram for a 95 Lexus LS 400 is missing.
check the wiring harness beside the hinge that moves when you close the trunk.i have seen the wiring get pinched and the ground gets broken. the tail lights have separate left and right side fuses.get a test light,and with the ignition in the on position,there should be power on both sides of all the fuses.the atc type have little test pins on them.ground the test light and put the tip on the fuse.if there is power,the light will come on. if a fuse does not light up the light on both sides,it is open.since the fuses are see thru,it is apparent if it is blown as the metal inside will be burnt.
SOURCE: my 1992 lexus ls 400 keeps stalling and idleis very low
Look for a small electric motor near the accelerator cable and near the top of the valve cover.
It's call IDLE AIR CONTROL (IAC) motor.
It's job is to increase the idle when load is added.
Example: turning on headlight,turning on AC.
Testing it is simple.
Warm up you car for 10 minutes.
Locate the IAC motor
turn on loads.....AC,headlights,etc
The motor should move the idle up
If the motor does not increase the RPM then it can be stick.
Try to give it few gentle taps to free up the gears.
It can be clean if your are up to it.
This electrical motor is very expensive. Please handle it with care.
====
The other trouble spot are
old accelerator cable
TPS Throttle position sensor
====
I will do a simple tune up and gas treatment before starting to replace any parts.
Please post reply on the comment window.
404 views
Usually answered in minutes!
×