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LS400

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Question
Will bad brake calipers cause excessive vibrating in steering wheel while driving?
This may very well be caused by the uneven wear on the front tires. When uneven tread is subjected to various road conditions or braking power, this will definitely cause a vibrating or shaking feeling. This may also be caused...
Question
Need to no how to bypass lamp failure sensor for tail & brake lights to work
Hello. Bypassing the lamp failure sensor involves locating the correct signal and ground wires and splicing them together to bypass the circuit. The actual cutting and splicing process is rather simple, however, you must make sure that the correct wires...
Question
What would be a price estimate of replacing a timing belt but not the the component kit?
The timing belt on your vehicle is recommended to be changed every 60,000-90,000 miles. If a timing belt fails, the engine will stop running, and you may damage the engine. To get an idea of the cost involved to replace...
Question
Q: Car keeps dying
There are usually two different issues that cause the engine to stall or reduce RPM in situations like this. The first thing I'd look at is the idle control valve or sensors that monitor the fuel system. The second item...
Question
My car won't start no crank the lights and everything r good battery good changed the starter relay and a couple other fuses.
Hi there. It sounds like the starter may have failed. Many times when a starter fails, it gives no warning or signs leading up to the failure. Make sure the battery and alternator is healthy with proper testing, not a...
Question
Q: Overheating, blow cold air
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
Bank 1 too lean, cylinder 1 misfire.
Hi there. There are several possible sources that trigger these two codes including a faulty fuel pressure regulator, weak fuel pump, clogged fuel filter, faulty powertrain control module, vacuum leak, faulty injector(s), faulty oxygen sensor(s) and a faulty mass air...
Question
My check engine light came on and my car was diagnosed as needing a catalytic converter. Now, my car won't start.
Hello, thank you for writing in. The catalytic converter can cause a vehicle not to start. This would be an extreme situation where part of the catalyst inside has broken off and is clogging the entire exhaust pipe. Tap on...
Question
How to take air out of cooling system Lexus ls400 1997?
Hi there. First check the cooling system for the right amount of coolant and top it off if its low. Then run the cooling system until the engine is hot at operating temperature. Shut off the engine and let it...
Question
Q: Electrical problems
Hello. The voltage regulator is the component that adjusts and maintains the electrical system's output, making sure that there is enough power generated to meet the system's requirements. When it fails or has an issue it can cause symptoms similar...
Question
After driving my car, the next day will not start. It turns over but will not start 1993 Lexus LS400
Hello - the first task is to get any problem codes, whether the Check Engine is illuminated or not. The next step is to determine whether you have spark at the plugs, or the fuel pump runs on those days...
Question
I am thinking of buying a 98 Lexus LS400 with 200,000 mi for $3000. IT runs great and is in beautiful condition. Check Engine light is on 1998 Lexus LS400
Hello - as to the starter question, if the starter starts to spin immediately after you turn the key to the "Start" position, spins the motor over briskly without strange noises, hot or cold - the starter is probably fine....
Question
I have a 1995 Lexus LS400. Yesterday, the speedometer stopped working and the engine was sputtering.
This may be caused by a faulty transmission speed sensor. The speed sensor reads the rotational speed of the reluctor wheel, located within the transmission. The speed sensor also controls the anti-lock braking system. Driving with a bad speed sensor...
Question
I have a 93 Lexus LS400, I put a power steering pump on it yesterday and I'm still getting a whining noise .
It sounds like you may have a power steering rack that may be putting too much strain on the power steering pump causing it to leak or fail. The rack and pinion gear set does two things: It converts the...
Question
Car idles low after running, not the same amount of power, I suspect a bad vacuum hose.
You will need to have the computer scanned for codes to see if there is a problem with the idle control valve or engine has a vacuum leak. There is a standard diagnosis that will need to be done and...
Question
Will the crank shaft pulley still spin if the timing belt has busted?
If the timing belt broke, the crankshaft pulley will still spin regardless. The crankshaft pulley is what spins the timing belt, which then rotates the valve train assembly. Depending on how this happened and when it happened, this may have...
Question
Should I purchase non serviceable ball joints? 1995 lexus ls400 lower ball joint
The distinction of more relevance in purchasing a part such as a ball joint is "should one install the OEM (Lexus) part versus an aftermarket part?" If you want a long lasting ball joint that is guaranteed to fit your...
Question
Q: Ignition
You will need to remove ignition switch to move position of key slot to get ignition back in.
Question
I have a 1992 Lexus Ls400 and the transmission wont switch out of 1st gear the caer has 261k miles should i get a new transmission
You should have the computer scanned for codes that may point to the cause of the no shift out of first gear. You may just have a solenoid that is bad for one of the gears and just need to...
Question
Engine swap ls400 Lexus 1990 to 1993 1UZ-fe
The engines themselves, that is the blocks and cylinder heads, are identical in both model years. So, they are a direct catalog interchange, have identical castings and so forth. However, the computers for the two years do NOT interchange. That...

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