Why do my 1993 lexus ls 400 shut off after driving 4 to 5 miles and restart after afew minutes sittig?

SOURCE: lexus ls 400

www.alldata.com - it's $25 for a year-long subscription and gives you troubleshooting charts, parts diagrams, exploded diagrams of every system on the car, etc - it's an online factory service manual. Excellent resource that is well worth the small cost.

SOURCE: Where is the Alternator located in a 1997 Lexus LS 400 ?

in the frony under the hood on the passenber side at about the middle you will see it it have a belt that goes around it

SOURCE: Location of fan blower in 1995 Lexus LS 400

fan blower motor is under dash on passenger side.

Vincent G

• 2363 Answers
• Posted on Oct 27, 2009

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.

SOURCE: what is the firing order for a 1992 Lexus LS 400?

Here is a diagram that should help you out.