Question about 1995 Lexus GS 300

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How do I replace the water pump for a 1995 Lexus GS300

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Replacing water pump in 98 Lex GS300

Removal of the crankshaft front pulley/damper can be removed without any damage being caused to the cam belt.
They are a good fit on the shaft, I personaly use a lead tup, weighs 2lbs and will not damage anything if used properly.
Tap equaly all the way round the pulley, that should be ok.

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

  • 1986 Answers

SOURCE: what type of fuel do i use in my 1995 Lexus GS300

I believe it calls for premium unleaded

Posted on Oct 09, 2009

ZJLimited
  • 17970 Answers

SOURCE: HOW TO REPLACE 100A FUSE ON 1994 LEXUS GS300

The 100 Amp alternator fuse is blown under the hood in the fuse block, it has a clear plastic cover on it for inspection, the designation is marked inside the fuse panel. This fuse is bolted in inside the fuse box, the fuse box has to be removed and opened to get to the bolts that connect the fuse in.

Here you have the Lexus-GS-300-Wiring-Diagram-Manual

Good luck (remember rated this help).

Posted on Dec 01, 2009

  • 7 Answers

SOURCE: how to replace fuel filter on 1994 lexus gs300

you first find the fuel pump fuse then allow to run the engine then remove the fuel pump pressure fuse, immediately engine will stop, this is to reduce the fuel pressure in fuel lines, jack up the vehicle fuel filter is located under the car just infront of rear side driver tire remove the old one and fix the new.

Posted on Dec 14, 2009

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2 Answers

How do I know my fuel pump has gone bad in my 1995 lexus gs300


there will be no sound , no fuel pressure and it will not start
however a bad fuel pump may be the result of other failed units including the relay , pressure regulator, wiring , EVAP system
so run the fault codes first to eliminate all other possible causes for the pump not working

Oct 07, 2015 | 1995 Lexus GS 300

1 Answer

How do I fix code 13 engine speed sensor Above 1000 rpm


Clearing the codes is simple that is done by removing the fuse of the EFI from junction box 2 for 10 seconds. Make sure to remove the jumper wire and switch the key off before clearing the codes.

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
Code 21 and Code 28 Main oxygen sensor fault (for ES300; SC300 & GS300 models)
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
Code 71 EGR system circuit fault (for ES300; GS300 & SC300 models)
Code 78 Fuel pump control circuit fault (for GS300 & SC300 models)

Nov 18, 2014 | 1990 Lexus LS 400

1 Answer

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

1 Answer

Timing belt should water pump be changed as well?


If it's a ES300 yes replace water pump, due to timing belt drives water pump, if it's a GS300 no need to replace water pump, not driven by timing belt.

Oct 20, 2010 | 2002 Lexus IS 300

1 Answer

I have a 1999 Lexus GS300. When trying to start


sounds like the pump and i think on moust lexus and toyota pump is in the gas tank under your back seat

Dec 31, 2009 | 1999 Lexus Gs 300

1 Answer

CARS SHUTS OFF


fuel filter clogged or fuel pump shorting out. Check filter and make sure wires to pump are secure

Dec 07, 2008 | 1995 Lexus GS 300

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