Notices
GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Throttle

Thread Tools
 
Search this Thread
 
Old May 23, 2019 | 09:21 AM
  #1  
Lena's Avatar
Lena
Thread Starter
Driver School Candidate
 
Joined: May 2019
Posts: 1
Likes: 0
From: California
Default Throttle

I'm having problems with rpms going really high even in park... When I press on gas pedal doesn't gain speed

Last edited by Lena; May 23, 2019 at 09:23 AM. Reason: Did not complete it
Reply
Old May 23, 2019 | 07:29 PM
  #2  
TW99GS300's Avatar
TW99GS300
Intermediate
10 Year Member
 
Joined: May 2014
Posts: 428
Likes: 46
From: WA
Default

Not enough information. But best guess is there is a vacuum leak and/or the throttle position sensor is incorrectly set.
Question is, even if someone guessed the correct issue, would you know how to fix it?
Take it to a mechanic that knows what they are doing and pay them for their expertise.
Reply
Old May 24, 2019 | 03:03 AM
  #3  
sbagdon's Avatar
sbagdon
Advanced
 
Joined: Mar 2016
Posts: 520
Likes: 34
From: MI
Default

Yea, sounds like TPS, yet we don't read minds (cars or humans).,

Any engine codes?
Reply
Old May 24, 2019 | 05:38 AM
  #4  
TrueGS300's Avatar
TrueGS300
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2018
Posts: 2,077
Likes: 576
From: CA
Default

It is very likely throttle related. A rodent could have ate through a vacuum line, a tps's wires chewed, or the sensor failed itself. IAC could be acting up. Throttle may be gummed up and out of parameters. They do weird things when no longer reading right. You have to start with a code scan and a visual inspection of the engine hoses and wiring isn't a bad idea if you know what to look for.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
oneforu2c
SC430 - 2nd Gen (2001-2010)
9
May 16, 2022 10:18 AM
EMCM
Performance
15
Sep 10, 2021 04:31 PM
Jen4081
SC - 1st Gen (1992-2000)
6
Oct 1, 2014 12:23 AM
sherwoodjb
ES - 1st to 6th Gen (1990-2018)
2
Jan 26, 2011 07:43 PM
mayad79
GS - 2nd Gen (1998-2005)
9
Jan 9, 2009 05:38 PM




All times are GMT -7. The time now is 07:20 AM.

story-0
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE