Question about 1990 Lexus LS 400
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Posted on Jan 02, 2017
SOURCE: 91 lexus ls 400 rear suspension
1992 Toyota Avalons are simuliar in design. The Y-Yard may have componiants to repair the parts needed. Go to Y-Yard.com the have a directory to look up parts.
Posted on May 28, 2008
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.
Posted on Oct 27, 2009
SOURCE: how to change waterpump on
DRAIN COOLANT SYSTEM.DISCONNECT THE RADIATOR INLET HOSE FROM INLET PIPE. REMOVE THE TIMING BELT FROM THE WATER PUMP PULLEY. REMOVE THE RIGHT SIDE IGNITION COIL.REMOVE THE WATER INLET HOUSING AND THERMOSTAT.REMOVE THE MOUNTING BOLTS AND STUDS. LIFT OUT THE WATER PUMP BY CAREFULLY PRYING BETWEEN THE PUMP AND THE CYLINDER HEAD. REMOVE ALL THE OLD PACKING AND CLEAN THE MOUNTING SURFACES. INSTALL NEW SEAL PACKING TO THE WATER PUMP GROOVE AND A NEW O - RING TO THE WATER BYPASS PIPE.INSTALL THE TIMING BELT AND CONNECT THE INLET HOSE TO THE INLET PIPE.THEN REFILL THE COOLING SYSTEM. RUN THE ENGINE CHECK FOR LEAKS.
Posted on Sep 03, 2011
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