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Lexus engine repair questions and answers

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  • lakes19
    lakes19 - 2005 Lexus ES330 - Engine - 11/21/2014
    Why will my quit after starting the first 3-4 times when cold?
    When it is cold and I try starting my engine, it automatically quits. It usually takes me 3-4 times before starting?
     
    0 answer
  • Tom Blakely
    Tom Blakely - 2007 Lexus GS350 - Engine - 11/8/2014
    Warning lights Exclamation Point comes on sometimes, Lights show swerving brakes sometimes. not other times.
    *80000 miles, it never does it when I take to mechanic. The climate controls do not work occasionally. Says check A/C connection. Tach and speedomoter fall to zero then right back up to speed. Help?
     
    • GT500Knights
      11/8/2014 GT500Knights
      Sounds to me like the body control module (may be named something different for your vehicle) is acting funky. Check for any loose, rusted, or corroded body/instrument cluster or main harness grounds. Loose grounds can cause all sorts of goofy stuff to happen too. One of the first tests I would do (besides checking for any stored codes) would be to check the condition of both the battery and the alternator. The battery acts as a giant capacitor, and filters out most of the unwanted AC voltage interference that can harm or mess with sensitive electronic components. Do not have the "toaster" style test done, a proper capacitance test needs to be done that can tell exactly how many cold cranking amps are available, as well as the exact condition of the battery. IF your battery is original from factory, there's almost no question it needs to be replaced and may be the culprit of your problems (even if your engine starts up just fine).
  • ebuckles
    ebuckles - 2000 Lexus ES300 - Engine - 11/7/2014
    When I start my car it turns over normally, then immediately dies.
    I can keep the engine going if I rev the engine but I can't keep it on long enough to get it into gear.
     
    • RhodeApple
      11/7/2014 RhodeApple
      Sounds like an immobilizer problem, you car may not be correctly detecting the key. If you have a spare key try using that. If it does the same thing the car may be detecting that wrong key is in the ignition and shutting down the engine.
    • GT500Knights
      11/7/2014 GT500Knights
      Would you happen to be having any backfiring? Check for any large vacuum leaks, or any at all. A common problem on the intake system with many cars is the flexible bellow tube develops cracks. If the cracks are located after the MAF (Mass Air Flow) sensor, the PCM (Powertrain Control Module) will pick up inaccurate air intake readings and not inject the proper amount of fuel to balance the mixture. When you step on the gas you're commanding the computer to increase injector pulse-width (add more fuel), allowing your car to rev, but dies immediately upon being starved of fuel. This is one possible scenario.
  • Lorene Upshaw
    Lorene Upshaw - 2003 Lexus ES300 - Engine - 9/23/2014
    What is wrong when the air conditioner light blinks continually?
    Stops producing cool air; fan continues to function.
     
    • Jimm
      9/21/2014 Jimm
      Most likely the issue is a faulty compressor relay. Check the various on-line vendors; www.autopartswarehouse.com, www.RockAuto.com, www.partsgeek.com, to list only a few. For example, they (RockAuto) list the compressor relay from around $9.00 for your vehicle.
    • greasemonkey
      9/23/2014 greasemonkey
      thats usually an rpm issue with the compressor. make sure the drive belt is tight and the freon charge is up
  • richard
    richard - 2000 Lexus GS300 - Engine - 9/15/2014
    I have a 2000 lexus GS 300, during the summer it didnt shake or turn off. The tempature has dropped is currently shaking
    car has 91k miles. Its now happening since the tempature dropped. Shuts off and shakes when i make a complete stop. Check engine light is on as well as the other ones as well. code is P1349
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2001 Lexus GS300 - Engine - 9/1/2014
    Peridically car will not start. Usually when its very hot. wait a few hours and it will start perfectly.
    engine cranks fine but will not fire at all. i replaced fuel injection relay but this did not solve problem. Car can go for weeks with no problem then on a very hot day, it wont start. wait a few hours and then it starts.
     
    0 answer
  • Izzy
    Izzy - 2003 Lexus IS300 - Engine - 8/31/2014
    How do you get codes on this car
    Engine light came on
     
    • Jimm
      8/31/2014 Jimm
      The check engine light is located on the dash and stays on if the computerized engine control system detects an engine performance or emissions problem.

      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.
  • Ivan
    Ivan - 1994 Lexus ES300 - Engine - 8/13/2014
    Why is my Lexus OVERHEATING?
    I have a 94 Lexus Es300 that over heats in about roughly 10 to 20 minutes. I've noticed my hydraulic fan dosen't run at all! I gave it a spin by hand see if it was free well it felt fine. I thought it was the pressure line house which runs from the power steering ...
     
    • Jimm
      8/13/2014 Jimm
      The most common cause of overheating is because of an external leak from a water pump or a radiator or heater hose. The way to find the leak is to wait till it is overnight cold and maybe just pour water in and see if the leak is large enough to see it simply leak out from where it has a leak. if you pour in a half gallon or more and you still see no leak its time to pressure check the system.

      Here is a short list of possible causes for overheating;

      Low coolant level
      Leaking coolant
      Improper coolant concentration (not at recommended 50 / 50 mix of anti-freeze and water)
      Clogged radiator hoses
      Clogged heater hoses
      Clogged radiator passages
      Clogged heater core
      Faulty thermostat
      Faulty water pump
      Faulty radiator cooling fans
      Faulty radiator cooling fan switch (coolant temperature sensor)
      Faulty / worn serpentine drive belt
      Faulty / worn drive belt tensioner

  • bbq
    bbq - 1995 Lexus SC300 - Engine - 8/3/2014
    Air conditioning is not blowing cold air and engine is idling up and down drastically
    Occurred all of a sudden
     
    • Chevy doctor
      8/3/2014 Chevy doctor
      Sounds as if a vacuum line came off or some type of vacuum leak. So the vacuum source may affect the HVAC control head or temp doors. Which affects ac operation.
  • AutoMD Member
    AutoMD Member - 1993 Lexus ES300 - Engine - 8/1/2014
    I start my car up, it stays on for about 10 min thin cuts off. It takes about 30 min to start back up.
    car have 2000 mil on it, while driving or just sitting,at a red light it well cut off like its out of gas. the power stays on the lights,radio,power is good.
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2000 Lexus SC300 - Engine - 7/23/2014
    Engine is quickly overheating
    Hi my car has about 150k miles and has been running smoothly. Yesterday I drove 3 miles to a fast food shop, ate in my car for about 5 minutes and noticed coming home that the heat gauge was entirely up. I was less than a half mile away so I got home. This ...
     
    • Jimm
      7/23/2014 Jimm
      The most common cause of overheating is because of an external leak from a water pump or a radiator or heater hose. The way to find the leak is to wait till it is overnight cold and maybe just pour water in and see if the leak is large enough to see it simply leak out from where it has a leak. if you pour in a half gallon or more and you still see no leak its time to pressure check the system.

      Here is a short list of possible causes for overheating;

      Low coolant level
      Leaking coolant
      Improper coolant concentration (not at recommended 50 / 50 mix of anti-freeze and water)
      Clogged radiator hoses
      Clogged heater hoses
      Clogged radiator passages
      Clogged heater core
      Faulty thermostat
      Faulty water pump
      Faulty radiator cooling fans
      Faulty radiator cooling fan switch (coolant temperature sensor)
      Faulty / worn serpentine drive belt
      Faulty / worn drive belt tensioner


  • AutoMD Member
    AutoMD Member - 1995 Lexus LS400 - Engine - 7/5/2014
    When both catalytic converters turn red hot what do that meain
    20000 miles it run rough cold are hot
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2001 Lexus GS300 - Engine - 7/4/2014
    Several times after stopping to get gas, my car wont start. if i wait long enough it will start.
    it's usually very hot outside. vehicle has 230k mileage.
     
    • CVO
      7/4/2014 CVO
      1. Check the fuel injection pump relay. Under extremely hot temperature, the FI pump relay is still remain engaged and created a confusion to the powertrain control module.

      2. The battery cables are aging over the time and stopped the current flow from the battery to the starter due an increasing of their resistance through the expanding or dilating under hot temperatures. Replace the battery cables as necessary.

      Note: i have seen the FI pump relay was defective in the early Lexus models.
  • AutoMD Member
    AutoMD Member - 1999 Lexus SC300 - Engine - 6/16/2014
    When I start my car, there is a slight murmur/vibration. You can feel it in the steering wheel. It's there whether it's
    I don't know if this is part of the problem or not: A few months ago I filled the tank (91 octane) and brought it home. While in the garage, I put in a container of Chevron Injector Cleaner. The car sat there over night, and when I started it the next morning, the ...
     
    • GT500Knights
      6/16/2014 GT500Knights
      Can't really tell what the problem might be....hard to tell based on description.

      As far as the gasoline you put in your car, it does not help. First off, any type of injector cleaner is supposed to be put into a tank of near-empty gasoline. By the way you said it, it sounds like you put the gasoline in and then the injector cleaner. The problem with doing this backwards is that the injector cleaner is no longer thoroughly diluted throughout the gasoline, instead it is going through the fuel pump as spurts here and there.

      Second off, 91 octane does NOTHING, I mean ABSOLUTELY NOTHING compared to 87 octane gasoline as far as fuel quality or detergents. Higher octane level simply means the gasoline has more resistance to detonation. Higher performance cars such as bmws, porches, and corvettes will specifically require higher octane fuel due to higher compression ratios and/or supercharger/turbocharger requirements. The air fuel mixture inside the combustion chamber can self-detonate before spark plug ignition if lower octane than required is used inside an engine. Contrary to popular believe, 89 and 91 octane fuel will do nothing as far as performance, fuel economy, and injector cleaning go. The only time to use higher octane rating like 89 or 91 grade is if your vehicle manual states that it is needed.
  • AutoMD Member
    AutoMD Member - 1999 Lexus SC300 - Engine - 6/15/2014
    When I start my car, there is a slight murmur/vibration. You can feel it in the steering wheel. It's there whether it's
    I don't know if this is part of the problem or not: A few months ago I filled the tank (91 octane) and brought it home. While in the garage, I put in a container of Chevron Injector Cleaner. The car sat there over night, and when I started it the next morning, the ...
     
    0 answer