Top 20 1990 Lexus LS 400 - Page 2 Questions & Answers

Unlock them and then operate the handle. If you need further help, I’m available over the phone at https://www.6ya.com/expert/justin_3ae27a9d61d6acd4

Over heating

maybe a vacuum line has a hole or is off completely. it could be a brake booster even.

AKA THROTTLE POSITION SENSOR IS ON THE SIDE OF THE THROTTLE BODY.

if the battery is all right, the starter or igniton have a problem.obd2 tools

the timing belt is not aligned on the correct tooth.....

The RPM signal comes from the crank sensor. The harness connector needs to be checked for a 5v reference signal and the ground side needs to be checked for a good ground. This test is to rule out the computer as being the issue. Then the signal wire needs to be checked for a good signal. When the crank sensor fails you get not spark and no fuel., You will need a waveform viewer to determine if the sensor has failed. You will need a basic meter to determine if the computer has failed.

You blew the fusible links,here they are.They are under hood,maybe close to battery in box.Just follow positive battery cable to it.

Did you reset the computer after installing the new coil? Culprit, "now" has to be only one thing I can think of. the "computer" or the fuse that might be in place for that coil. If you have spark on the passenger side, it can not be the ignition module, cap or rotor. Take both battery cables off the battery and wait 30 min. Rehook the battery cables. See if the new coil kicks in. If not, check the fuse. If not bad, problem left is the computer.

check engine temperature could be overheating or you have faulty throttle control motor.could have faulty mass air flow sensor.have vechicle code scan before buying new parts.

I would start by cleaning the mass air flow valve by spraying a non-chlronated brake to the inside of it cleaning the small wires inside of it then let it dry for 10-15 minutes before re-installing.If the problem still exist then check the fuel pressure and make sure its within its specs.If its not within the specs then replace the fuel pump.

What is the fault, send us the code number detected there.

leave off starter wire or put one in wrong place

There will be three wires to the switch. with a tester, determine which is hot and jump to one lead then the other. If the switch is bad the window will operate. murf427

Behind the back bumber. Hidden part.

On the top. Just climb up and try to see it. A hidden device

Behind the wind shied. a hidden part. very difficult to detect.

Get a breaker bar and posision it against a chassis rail or something solid. Tap ignition key to start & quickly off. The starter motor will crack the bolt loose for you. Just make sure the bar wil not damage anything (such as radiator but yours front whee drive right? radiator be ok but get my drift.

for right now you must disconnect the positive from the battery. After you must call to the locksmith for a new key. see the diagram attached.

It is really hard to say what this could be, please have the dealer or a shop that knows this make and model look at the problem.