Lexus is300 high idle My cooling system consists of: Mishimoto Radiator 160 degree thermostat slim fans fans kick on 10 degrees colder than normal However, my car used to somewhat Dec 29, 2016 · 93 - 05 Lexus GS300 / GS400 / GS430 ; High Idle at startup High Idle at startup. Within the last 3 months, I had the clutch replaced. But once I come to a stop, the RPM jumps up to 1100, literally causing me to press down harder on the brake pedal or the car will start to creep forwards. To avoid this, be sure to regularly drive the engine hard. However the car has sounded strange and the car idles at 2000rpm only to go down to 1500rpm when warm. Didn't really notice when it started but since then I have cleaned my MAF Sensor and Throttle Body. My 1999 is200 1GFE manual recently has been sitting at 3000rpm as soon as it reaches operating temperature. So I switched the throttlebody from the 2001 to the 2000 car but still got the Nov 13, 2018 · Lexus Sedan Discussion. Fuel trims actually show bank 2 is running too rich, so yeah, unlikely any vacuum leaks. My transmission shifted poorly and at traffic lights the idle would drop so low I thought it was going to stall. Clean your idle air control valve to fix it This video on Mar 4, 2010 · Lexus IS200 / Lexus IS300 Club ; Idle Air Control IS 200 - Realise this is an old thread, but I have a high idle (1500+), but when driving (even foot off pedal Mar 5, 2016 · Hi All First post here. Original owner. Jul 9, 2006 · Latest Posts; Home ; Forums ; Lexus Owners Club - Lexus Forums ; Lexus RX300 / RX330 / RX350 / RX450h / RX500h / F-Sport Club ; 99 - 03 Lexus RX300 ; Step By Step Instructions For Iacv(idle Air Control Valve)/isc/throttl Jul 17, 2012 · Car is somewhat heavily modified (Aristo swap, single turbo, bolt ons etc. Oct 9, 2008 · 01 Black IS300- 15% Tint all around; Seibon Carbon Fiber Hood; 18" ASR AR1's; HKS Hiper ; Turboeast Header; K&N FIPK; 2400 watts of Crossfire power; 2 JL 12W6 Subs Sep 23, 2019 · 2001 lexus is300 has high idle of 1100 at start up and 1800 when warm plus gas pedal doesnt respond unless pressed halfway Want Answer 1 Clicking this will make more experts see the question and we will remind you when it gets answered. The cold Oct 22, 2021 · Lexus IS200 / Lexus IS300 Club ; IS200 Idle Rpm ‘STILL’ High After Throttle Body Clean & ECU Reset? Lexus Model: IS300 Year of Lexus: 2002 Location: Yorkshire; Dec 10, 2014 · Step 1 - Clean the MAF sensor. i've tried messin with the idle but the stock is300 ecu ultimatley controls it. Also, the throttle position sensor was never loosened, correct? I would verify you have slack first and the APPS is keeping the butterfly closed. When the code says that the Fuel System is "too lean," it means that the computer has been adding more and more fuel, which is called Long Term Fuel Trim. My problem is similar to the ones these guys experienced:Is200 Sports Luxury 1999 Model Idle Problem - General Automotive Discussion - SAU CommunityIs200 High Revs On Let's say I'm rolling toward a red light, foot off the gas, slowly applying the brakes, engine rpm is pretty much idle (800-900 RPM). Otherwise, take the vehicle to an auto parts store, Lexus mechanic or Lexus dealership, and have them tell you what the codes are. once the engine is warm, the heat from the combustion chamber atomizes the fuel almost instantly and a high air velocity is no longer needed for smooth/ low emissions running. It don't matter if its 100 degress outside. Due to the build up of dirt and oil over time, the MAF sensor may not be getting the correct readings for air input. high idle; By ramayah December 29, 2016 in 93 - 05 Lexus GS300 / GS400 / GS430 Feb 16, 2019 · Here is a quick guide on how to fix a Toyota or Lexus that either idles high or stalls on start up. Typically, P0505 is going to be caused by either a vacuum leak, or a problem with the idle air control valve. Nov 14, 2012 · Lexus IS 300, 2002, manual, with 166,800 miles. Jan 27, 2023 · The reason your Lexus IS 300 shakes at idle but smooths out when accelerating is that the engine is spinning faster, which smooths out any misfires. Figure 3. The heat and high speed will burn the carbon deposits off and keep the engine running smoothly. However in my '02 IS300 the idle, when cold, is significantly higher than it was when the car was relatively new. May 23, 2020 · Lexus has a proud history of pushing boundaries and challenging the status quo. The current codes P0141/P0161 are irrelevant as they pertain to the post cat heated oxygen sensors, so those would not cause a high idle. It also sounds like maybe there's a slight misfire or vacuum leak because it's not exactly revving smoothly. Sep 8, 2024 · I own a 2002 Lexus IS200 with the 1GFE engine and auto transmission. Also try cleaning your MAF. My IS300 acted strange before the battery needed replacing. The rpm goes up when I move the steering wh Vacuum Leak: A vacuum leak will result in a high engine idle on any engine because it can lead the engine computer to attempt an unnatural idle when the oxygen sensor detects a lean condition. I'd be cruising and when I'd stop at stop sign, stop light ect. Dec 8, 2014 · U sing low grade fuel or fuel with a high ethanol content can expedite the build up. Oct 19, 2013 · Let me suggest a new battery. You can swap your battery with a known good battery from a friends car. First I realize that a car should idle higher when cold so that the fuel burns properly. Since its founding in 1989, it has repeatedly pioneered new thinking and new products that have changed people’s perceptions and reshaped the luxury car market. ), but still usually operates and runs like a stock is300. Turned the engione off and connected everything back (the hose and the air sensor) as it was. Lexus IS . Sep 15, 2008 · Maintenance - Engine hesitation, power loss, sluggish acceleration: Potential fix - SUMMARY Symptoms: Gradually increasing car hesitation, power loss, sluggish acceleration, lowered fuel economy. If a motor mount is causing the problem, once you put the car into gear, the torque from the engine will hold it against the frame. Mar 14, 2010 · After cleaning, I started it with the airbox still not connected and it was idling at around 2000rpm with engine malfunction light ON. A throttle system that isn’t working properly can result in an engine stall, a high or low idle, or both. Jan 5, 2013 · Some of the high performance 4-cylinder and straight 6-cylinder engines (such as those in BMW and Lexus) split the cylinders into groups of two or three and call them separate banks. IS 300 P0505 Causes. my RPM's at idle would be 1100. 2018 - IS350 high idle. Jan 5, 2024 · Check the connectors on the throttle body to make sure none of the pins are loose or damaged. I recently had drained the coolant out of the radiator and filled up new coolant. So 2 weeks ago I did my oil change tranny fuel filter and LSD. Feb 21, 2005 · i know the tec3 can control idle, but i'm pretty sure with our pfs standard setup, the is300 ecu still controls. Dec 8, 2014 · The light means the Lexus has a diagnostic trouble code stored on its ECU. Idle Air Control Valve Nov 6, 2009 · Hello braintrust. It ran fine for a couple days then it started acting up again. If you are running the original, replace it. Thread starter JPBFerrari Another issueis it normal for these vehicles to idle high? Even after a 5 Jan 5, 2022 · is300 is300 engine lexus misfire rough idle Jump to Latest 13K views 20 replies 9 participants last post by Austezza2J Mar 30, 2025 Oct 18, 2021 · Hi I’m at a loss at what to do next my son’s 2000 Lexus IS200 has a high idle issue that no one can fix I have replaced the throttle body brake booster and the ecu when the car warms up it idles between 2000 and 3000 rpm Mar 21, 2019 · Rough idle; Stalling; High idle speed . An easy way to retrieve those codes is by using an OBD-II scanner. That -16% is just about at the threshold to set a fault. Typically, a misfire triggers the following codes: Jan 17, 2004 · Another reason rpms are keept up is to of course help the car warm up faster and give the driver some heat quicker. I've sporadically had a chirping noise, which sort of comes and goes, but yesterday I also started hearing a high-pitched whistle-sounding noise. Step 4 - Is there lean idle misfire? Sep 20, 2013 · Idle should be ±700 rpm, but your cold engine idle is OK. The 2000 cranks up fine with just right idle at all times. The Mass Air Flow (MAF) sensor is the component that tells the engine how much air is coming through the intake. Those plastic connectors just disintegrate after all these years and sometimes the pins aren't making contact. Mar 31, 2007 · Hey, about a month ago, i started experiencing a high idle. Click to expand Aug 16, 2015 · I've been getting super high idle on my is300. Possibly a leaky injector, which could in turn cause the high idle. Oct 20, 2007 · Hi,I have a 2000 and a 2001 gs 300 lexus. Excessive carbon buildup on valves. The idle is high until the engine is warm. While replacing the idle air control valve seems like a good idea, it’s worth your time to check for a vacuum leak first. . The 2001 has a high idle when start up in the morning and after sitting for a while. I wonder if anyone can shed some light on my idle issue. str qgdzak jgly aivtajfv eiihggal keiqc tqsm gwvaka pxjaph zaa iwzvak zffyscc mxlqvo kglghdk busz