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2003 Lexus Gs 300 Questions & Answers
Emissions light
Should not be a person today driving any vehicle ,thatdoes not know what to do when any dash light comes onHave the vehicle checked for codes & issues resolvedat a repair shop
Sensor
Have you had the computer checked for trouble codes yet ?
2003 Lexus GS300 P0031 code
Yes the O2 sensor preheater problem will turn on the VSC light, see the complaint often, why? don't know.P0031 TOYOTA - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1In most cases the O2 being replaced cures the code but here is the full story.Possible causes- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit open shorted to ground- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection- Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse- Faulty Engine Control Module (ECM)
What do I need for a tune up for my 2003 Lexus GS
To do a "Tune-up" you will need 6 spark plugs, a throttle body gasket, an air filter, an air compressor, a blow gun, a magnetic pick-up tool and a socket set with ratchet and extensions.
You must remove the intake air resonator, the #3 timing belt cover, the accelerator cable, the throttle control motor connector, the throttle position sensor connector, the accelerator pedal position sensor connector, the throttle body bracket and the throttle body. Then remove the spark plug cables and the ignition coils. You will then crack the spark plugs loose 1/4 turn and use the air compressor and blow gun to blow the debris out of the spark plug tubes so it does not enter the combustion chamber when the spark plugs are removed. Then remove the spark plugs. You will need the magnetic pick-up tool to fish the plugs out of the tubes once they are completely unscrewed.
Install new spark plugs and torque them to 13 ft.lbs (18 Nm)
Install throttle body with nw gasket. Install all other parts removed and connect all connectors.
Install intake resonator and new air filter.
My check engine light came
take to local parts store to retrieve code vsc/trac are in failsafe because of thcheck engine light once you have code then we can diag problem with engine
I have a 2003 Lexus
A seized up door lock actuator. You can try freeing it up by spraying a good penetrating oil, my favorite is PB Blaster. If it wont free up you will need to replace it.
How do i change spark
- Expect spark-plug work to be tedious. If this is your
first time, plan 3 or 4 hours after engine cools (or 1 hour on several
days), allowing 15 minutes per plug. It is harder than changing air filters, fixing flat tires, or starting a mower.
- Consult your vehicle's manual. Look up where your
spark plugs are, how many you have, the correct "gap", and the size
socket needed to remove them. Also write down the vehicle's make, model,
and year. The gap can also be found on the emissions label under the
hood.
- Visit your local auto parts store.
Find (either by looking up in the provided reference book or by asking
an employee) the correct spark plugs for your vehicle. The store also
has socket wrenches, plus spark-plug sockets (with gasket), and
socket-extension rods or swivel-joints to reach recessed plugs.
- Find out (from the reference book, the packaging, or the employee) if these spark plugs need to be "gapped".
Some modern plugs should not be gapped (but others can have different
gaps, depending on use in either 6-cylinder or V-8 engines, etc.).
- Park vehicle, turn off the engine, and open the engine compartment, to cool for hours.
(WARNING: After running a car for a long time, the spark plugs can be
the hottest part of engine! While it can require several hours to cool
enough, it can require several weeks to heal burnt skin.) Especially
with aluminum-head engines, let cool to room temperature to reduce the
probability of damaging the threads.
- Take (if needed) a wire-gauge spark plug gap tool and adjust the distance between the two electrodes.
Between the electrodes is where a spark is made. One electrode will be
an L-shaped piece of metal (hook), the other a metal prong centered
directly across from it. Set the gap between the two electrodes, from
.028-.060 inch, such as .035/.040 /.043 /.050, as in book (see Tips
below).
- Collect tools & new plugs (perhaps in a tool-tray). Remember which direction the socket-wrench switches to reverse/unscrew: wrench might not be visible when working back plugs.
- Check fit of new plugs inside wrench-socket gasket.
If new plugs stick to rubber gasket, consider removing gasket with
screwdriver in square hole, to just use tape. Like taping screws to a
screwdriver, the socket can be taped to spark plugs (not the threads)
with scotch tape, for easy release once inside the engine. Otherwise,
have pliers to pry the socket off new plugs once installed.
- Locate (with the help of your manual or a repair manual for your vehicle) the distributor spark-plug cables/wires.
The number of wires will be equal to the number of spark plugs your
engine has. Often these wires are red or black, and will be equally
divided on opposite sides of the engine.
- Using masking tape, mark each of these wires for where they connect.
Don't rely on memory: if interrupted, easy to forget, and engine can
run rough with crossed plug wires. For 8 cylinders, deducing plug
connections is almost impossible (120 choices for 5 wires) -- in that
case you must contact an expert or study wiring guides.
- Remove each spark-plug cable, pulling the caps (to avoid breaking cable wires). Caps should come loose by very intense twisting/pulling (avoid jerking/hitting fingers).
- Using compressed air, pressurized engine cleaner, or a brush, clean all debris from around the plug.
- Using a spark-plug socket, remove each plug from the engine, and replace each with a new spark plug. Don't over tighten (usually just 1/16 turn, after finger-tight).
- Replace the spark-plug cables on the same plugs they originally came from, and remove the masking tape.
- Remove tools near engine (beware the moving belts), close your engine compartment, and start your vehicle.
I hope this helps.
I own and drive daily a 2003 gs 300 with 152000 mi
Check your owners manual/maintenance interval, but if I were you I would at least do an inspection. If the belt breaks or even slips a tooth, you will be stranded. The belt could possibly last another 150K, but I wouldn't want to risk trying. If you need more advice, please feel free to reply.
OBD code P0746. Where is the Pressure Control
P0746 Pressure Control Solenoid
Performance or Stuck Off
A transmission solenoid is an electro-hydraulic valve that controls
fluid flow into and throughout an automatic transmission. Solenoids can
be normally open or normally closed. They operate via a voltage or
current supplied via the transmission computer or controller.
Transmission solenoids are usually installed in a Transmission Valve
body, Transmission Control Unit, Transmission Control Module or inside the Transmission and it helps regulate the pressure from the
trans fluid pump.
P0446 Evaporative Emmission Control System Vent Control Circuit Malfunction
What does that mean?
Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.
Symptoms
There will be no obvious symptoms to driver, other than MIL illumination.
Causes
A code P0446 could mean one or more of the following has happened:
* Faulty vent valve
* Open, short or excessive resistance on Vent valve control circuit
* Blockage of vent valve
* Bad PCM
Possible Solutions
With a P0446 OBD-II trouble code, here are some things to try:
* Replace Vent valve
* Repair open, short, or resistance problem in control circuit
* Repair open, or short, or resistance problem in power circuit
* Replace PCM
Hope this help (remember rated this post).
I want to know the
For 2003 Lexus GS 300 the engine oil change recommendation interval is at 10.000 miles or 12 months. Oil filter renew.
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