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1993 Lexus GS300 Yellow oil light keeps coming on on the dash. Is this my transmission light?

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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phoenixinks
  • 89 Answers

SOURCE: Lexus GS300 oil change

check this forum out

http://us.lexusownersclub.com/forums/index.php?showtopic=35469

Posted on Jan 12, 2009

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SOURCE: 98 lexus gs300 codes p1120 p1121

I wanted to start a thread specifically about failures within the throttle body concerning the GS300 (1998 in my case)

My symptons were:
VSC, VSC OFF, and ENGINE Lights would come on, followed by my car going into Limp Mode, where only that last 25% (if that) of the throttle would respond (basically have to floor the pedal to even move at all).

During the mornings, or when the engine was COLD, the throttle operated normal...then once the car warmed up, usually at about 10 mins, the problem would start...it happened intermitantly at first...1 or 2 days over the course of a week, then it became more consitent, until last week it became a daily problem.

The first part I tried was the Throttle Position sensor, which is on the front side of the throttle body, and the easiest thing to replace...this didnt help at all. $300 part from Lexus, $80 part from RockAuto.com (exacly same part toyota OEM)

THE PART THAT FIXED THE PROBLEM:
===========================================
"Idle Valve Motor", which is the larger electrical object next to the TPS on my 98 GS300. Problem is solved.

The Codes I got were P1120 and P1121 - Accelerator Sensor problem. However it wasnt really the Accelerator Sensor, it was indeed to actual electrical Motor that controls the opening of the Butterfly valve inside the Throttle body.

I found the problem by good old trouble shooting, and using an ohm meter to see if the throttle electric motor was getting elev, I found that the elec motor just to the left of the TPS was basically freaking out and shutting down. The Accelerator Pedal Sensor is on the Back-side of the throttle body where the throttle cable connects to, and has a spring on it. It was fine.

GS300's are indeed "drive by wire" concerning the throttle...the cable triggers the Accel Pedal Sensor, which sends a signal to the ECU, the ECU then sends power to the Idel Valve Elec Motor (next to the TPS), which opens and closes the mechanical butterfly valve, then the TPS sensor detects how far the elec motor is actually opening the butterfly valve...its a closed-loop feed-back system, meaning any failure in any sensor will cause the entire systm to fail.

The throttle cable apparently is ONLY there to allow the fail-safe of having that last 10-25% throttle when the electronic system fails...there is a gearbox inside the throtle body which allows the tail end of the throttle to manually engage the butterfly valve...the rest of the time, the butterfly valve is 100% opened and closed via the idle control motor.

Posted on Jul 08, 2009

dropndeal
  • 134 Answers

SOURCE: Where is the oil control valve on a 1999 Lexus

See the attached diagram. Please let me know how I may assist further. FYI: There is an OCV on each cylinder head.


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Posted on May 19, 2010

  • 1 Answer

SOURCE: i need a fuse box diagram for a 1993 lexus gs300

i have fuse box diagram for a 19993 lexus gs 300

Posted on Jan 01, 2011

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DIAGRAM FUSE BOX 93 LEXUS GS300


On this website, you find fuse box diagram and description for Lexus GS300 (1993 - 1995)

Lexus GS300 1993 1995 fuse box diagram Auto Genius

Oct 02, 2012 | 1994 Lexus GS 300

1 Answer

Interior fuse box order and picture for lexus gs 300 1994


On this website, you find fuse box diagram and description for Lexus GS300 (1993 - 1995)

Lexus GS300 1993 1995 fuse box diagram Auto Genius

Jun 30, 2012 | 1994 Lexus GS 300

1 Answer

94 lexus gs 300 where is the fuse box


Check this website you find there fuse box diagram and description for Lexus GS300 (1993 - 1995)

Lexus GS300 1993 1995 fuse box diagram Auto Genius

Jan 20, 2011 | 1994 Lexus GS 300

2 Answers

1993 lexus gs300 keeps running hot. CHanged radiator, thermostat, water pump and all fans still runs hot after a 30 mile trip.


compression test most likely blown head but first why did you change all this stuff if the cause was overheating then am suspecting a blown head gasket

Oct 26, 2010 | 1993 Lexus GS

1 Answer

What type of maintance should I do on my 1993 lexus gs300 at 195k


i would replace the timing belt flush the tranny change the oil check and all ball joints bearings all alignement parts for wear and change the oil adjust the valve timing check the serpentine belts replace them recharge the freon and flush the cooling system flush the power steering and flush the brake fluid that should be it hope this helps

Sep 13, 2010 | 1993 Lexus GS

1 Answer

2000 GS300 LEXUSVSC OFF AND CHECK ENGINE LIGHTS KEEP COMING ON


disconnect negeative (-) battery cable for 20 seconds....reconnect and start car. Check engine light should now be off. I

May 19, 2009 | 2000 Lexus Gs 300

1 Answer

2001 Lexus GS300 with an electrical problem


sounds like you may possibly have moisture in your fuse box in car.or a pin fit connection problem.

Apr 24, 2009 | 2001 Lexus Gs 300

1 Answer

VSC Light keeps coming on


i had the same problem with my 1993 lexus GS300. ALL MECHANICE SAID IT NEEDS A LOT OF WORK.then i toke the car to a friend i know owns a car lot,the only thing was needed is th o2 sensor.since i replaced it i have no problems.

Jul 21, 2008 | 1999 Lexus Gs 300

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