Question about Cars & Trucks

Open Question

I have a lexus gs300 and I have a noise sound like the belt squeaking can u tell me what make it sound like that

Posted by Anonymous on

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1 Answer

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I Need the diagram to remove the tensioner belt that is on the alternator on a 1998 Lexus gs300


just loosen the alternator on its track then pull it so that the belt is loose and remove the belt and replace then tighten again

Apr 18, 2017 | Lexus Cars & Trucks

2 Answers

Where is the power fuse on lexus gs 300 located?


Lexus have two fuse boxes. One is under the hood on the driver side, and the other is by the drivers left knee. The lids of the box tell you what fuse is what.

There are images in the link.

Andrew 2005 Lexus ES330 :>)

Where is the power fuse on lexus gs 300 located Google Search

Nov 21, 2016 | Lexus GS 300 Cars & Trucks

1 Answer

2001 Lexus GS300 won't start (makes a continuous


A mechanic would check for voltage at the battery, the starter, the neutral safety switch, and the key switch.

Aug 04, 2012 | Cars & Trucks

1 Answer

My lexus gs300 will start but will not stay crunck unless the air is on and when you drive it with the air on it makes a loud noise. What is this?


WHen you turn on the a/c, the computer kciks up the idle speed to compensate for th load of the compressor on the engine. That tells me your idle air control is not wrking electrically or hte passages are plugged.

Feb 25, 2011 | 1994 Lexus GS 300

1 Answer

Where to find fuse box for 2001 Lexus GS300


On this website you find fuse box diagram and description for Lexus GS300 (2001 - 2002)

Lexus GS300 2001 2002 fuse box diagram Auto Genius

Aug 15, 2010 | 2001 Lexus Gs 300

1 Answer

How to tighten belts on a 2002 Lexus RX300


Bring it back to the dealer, tell them they squeck. new belts should not squeck. Squeaking means they are too loose or have fluids on them. If they're not shiny, the're loose.

Sep 16, 2009 | 2002 Lexus RX 300

1 Answer

I would like instrustions on how to disable the "seat belts not buckled alarm sound" to stop ringing or only ring for a short duration on my 2006 Lexus GS300


That requires disabling of a saftey device. NTHSA or others would not like instructions on that posted here.

Unlikely there is anyway to set a short duration timer.

Aug 05, 2009 | Lexus GS 300 Cars & Trucks

2 Answers

Power steering


There is a loud squeak on the front of my 1991 ls 400. The squeak is near the alternator. Any one no what it is?

Aug 15, 2008 | 1991 Lexus LS 400

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

12 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...