Question about 2003 Lexus ES 300

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2002 lexus ES300 engine problems

I hear that the 2002 ES300 had engine problems ( oil gels), MAF sensor and air fuel ratio sensor problems. I am also told these defects were resolved in the 2003 model.

Have you heard of this?

How can I tell if an early 2003 model has the 2002 engine in it?

Thanks.

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  • lexus2002 Apr 24, 2009

    I have a 2002 ES300 that had exactly the same engine problems ( oil gels) to the point that the engine completely died.



    I heard many cars were recalled because of this. Do you know if the dealer would take the car back if that is the case?

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6 Suggested Answers

BCally1
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SOURCE: Where is the Knock Sensor located on a 1994 Lexus ES300

  1. located on top of engine below intake manifoldgraphic.aspx?mod=reptiff&module_id=1&session_id=%7ba7aa889f-b7e3-42e1-9ece-3476a2533f69%7d&image_guid=95d24086&print_bw=0&

Posted on Jan 07, 2009

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SOURCE: how to change lexus es300 2002 cabin air filter

I just changed the cabin filter of my ES300. I found the instructions on the manual, under airconditioning and audio. It's pretty easy to do. I bought the filter from Kragen's for $21.95.

Posted on Mar 27, 2009

mkv0525
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SOURCE: High rpm (fast idle)

it is normal. car is designed to do this when engine is cold. it called open loop. when it warms up it is called closed loop.

Posted on May 21, 2009

  • 1 Answer

SOURCE: CD player Error 3

dear,
I have different experiance with the C.Dplayer ( error 3 ) , there is no need to remove it nor send it to the dealer ,all you have to do when you have `` Error 3 `` is to reset the C.D player , by recycling the power supply ,this can be done by disconnecting the main car battery power supply , you must also keep the battery disconnected for at least one hour . then connect the cables to the batteries ,when you start the C.D player you will hear some clicking sound ,and watch the numbers of the C.D`s in the display you will find all what is inside has been detected by the display .
and your C.D player is back to normal..

i discovered ths by chance , when I had this error in the past ,coincidently I had to replace the battery and after installing the new batteries ,i was suprised to see the player back to normal condition by its self.

Posted on Jun 19, 2009

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SOURCE: amplifier location 1993 lexus es300

My Son has a 95 es300, the amp for it is located under the front passenger seat. The easiest way to access it is to remove the 4 bolts holding the seat down, and remove the seat. Takes about 5 minutes

Posted on Jul 24, 2009

hawk127311
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SOURCE: 2002 Lexus ES300 Check Engine Light

You can disconnect your battery for a short period of time, 5-10 minutes should do it. There is no guarantee that the check engine light will not come back on in time, but it will make it go away at least temporarily.If you go to Autozone, 99% of the time they will hook up a code reader and diagnose your problem. It may be a minor and/or inexpensive fix. Please vote appropriately and leave feedback. I hope this helps and good luck.

Posted on Oct 29, 2009

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Difference between Air fuel ration sensor to O2 sensor?


usually an O2 code is 3 digits and not this type of code. if it has an mass air flow sensor(MAF) it could be it. I would start with checking the MAF readings then the O2 readings. OBD 2 codes are emission regulated so no matter what car it is the codes represent the same problem.

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Here are some common Lexus vehicles 1990-1995 codes:

Code 12 and Code 13 Rpm signal circuit fault
Code 14 Igniter signal circuit fault
Code 16 ECT control signal fault
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Code 22 Coolant temperature circuit fault
Code 24 Intake temperature sensor circuit fault
Code 25 and Code 26 Air fuel ratio fault (for ES300 & SC300 models)
Code 27 Sub-oxygen sensor circuit fault (for ES300 CA & GS300 models)
Code 31 Low airflow meter voltage (for ES300 and GS300 models)
Code 32 High airflow meter voltage (for ES300 model)
Code 35 Barometric pressure sensor circuit fault (for GS300 & SC300 models)
Code 41 and Code 47 Throttle position sensor circuit fault
Code 42 Vehicle speed sensor circuit fault
Code 43 Starter signal
Code 51 Switch condition signal fault (for ES300; GS300 & SC300 models)
Code 52 Code 52 and Code 55 Knock sensor circuit fault
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Basically this means that an oxygen sensor in bank 1 has detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes.
This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehiclesicon1.png powertrain/engine control module (PCM/ECM) uses that reading and adjusts to keep the engine running at that optimum ratio of 14.7:1. If something is not right and the PCM cannot maintain the 14.7:1 ratio, but rather there is too much air, it triggers this code.
A code P0171 may mean that one or more of the following has happened:
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    Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
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  • Sticking/plugged or failed fuel injector
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lot of times, cleaning the MAF sensor and finding/fixing vacuum leaks fix the problem. If you're on a tight budget, start there, but that may not be the fix for certain. So, possible solutions include:
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  • Inspect all hoses and connections in the air intake system
  • Inspect and/or test the intake manifold gaskets for leakage
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A bad mass airflow sensor can cause all kinds of fuel control problems that can range anywhere from a hesitation on acceleration to a complete engine no-start condition.

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Will a bad MAF on 92' Lexus es300 cause no spark?


No it will not cause a no spark condition.

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Most common, MAF ( mass air flow ), sensor. A faulty MAF prevents the computer from determining the correct fuel/air mix ratio.

Oxygen sensor. ( front and rear, front meaning before the catalytic converter, rear meaning after the catalitic converter. The front measures the fuel/air mix being sent through the catalitic converter, the back measures the emmisions and lets the computer know if any fuel/air mix ratios need to be adjusted. Both of these can trigger the check engine light.

I hope this helps you.

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The same thing happened to my 2003 ES300 - the smoke is coming from the oil seeping into the motor's cylinders. This is the classic "Oil Gelling" problem in Toyota and Lexus vehicles. There is a factory recall on it, but it only covers to 2002 ES300 not 2003. The Lexus dealer confirmed my "oil gel" problem and went to bat for me with Lexus - they got the repair approved - Thank you Mr Local Lexus Dealer! The cost was nearly $4,000 - paid for by Lexus.

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The car doesn't have power when hit the gas pedal speed pick up really slow also have code of 171 sistem too lean on bank one,lexus 2000 rx 300


this code sets when air fuel ratio feedback is stable after engine warm up,and fuel trim is considerably in error on lean side;The signal from air fuel ratio sensor is approximatelyproportional to existing air-fuel ratio.

for this code suspect excessive lean condition,normal rangefor total trim is between -35% to +35%,DTC uses "two-trip detection Logic".

Check system for intake leaks,incorrect fuel pressure,plugged fuel injectors,O2 sensor or coolant sensor operation.

check air-fuel ratio sensors
to do it you need to check them with a good scanner tool.

also,check MAF sensor operation.

personally i would clean with the special spray for MAF sensor (you can get it from you autoparts store) and try a fuel injector cleaner before start spending money in shops.

hope this info can help you.

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1996 MERCURY GRAND MARQUIS WITH OCCASIONAL SLUGGISHNESS ON ACCELERATION AND SEEMS LIKE IT MAY BE USING MORE GAS THAN USUAL. HAS BEEN WELL TAKEN CARE OF, REG. OIL CHANGES, NEW FUEL FILTER 2 YRS AGO-DR


I would use 10W40 in the 96 and 5W20 or 30 in the 2002.

For the 96 with sluggishness, you need to gently clean the MAF sensor wires with carb cleaner and a toothbrush. It is in the air intake tube. After cleaning, disconnect the battery for 1/2 hour, then reconnect so the computer can relearn the clean sensor. Drive for 10 miles, it will run rough until it relearns.


Section 03-14: Engine Controls, Electronic 1996 Town Car, Crown Victoria, Grand Marquis Workshop Manual
DESCRIPTION AND OPERATION Mass Air Flow (MAF) Sensor The mass air flow sensor (MAF sensor) (12B579):
  • is mounted on the corner of the engine air cleaner (ACL) (9600).
  • uses a hot wire sensing element to measure the amount of air entering the engine; air passing over the hot wire causes it to cool.
  • sends out an analog voltage signal to the PCM (12A650) to determine the intake air mass. The PCM will then calculate the required fuel injector pulse width to provide the desired air/fuel ratio.
The mass air flow sensor hot wire sensing element and housing are calibrated as a unit and must be serviced as a complete assembly.

Mass Air Flow (MAF) Sensor

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1993 LEXUS ES300 FLOODING AND FUEL VAPOR OUT EXHAUST SYSTEM 1997 lexus ls400 is hard to crank.i have to turn it over 3-5 timesbefore it starts. it is getting fire and checked the plugs and are wet with...


ok, i tell you 3 possible causes.
check maf sensor connection , check fuel pressure regulator (max press fuel in rail 40 psi) , check engine compression (min 95 psi ) if less this cause spark plugs wet and not start

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