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Toyota engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 1999 Toyota 4Runner - Engine - 2/15/2014
    Misfire is cylinder one
    Recently my 4runner started vibrating really bad. Mostly when I'm braking and come to a stop or when I'm going a faster speed on the freeway. Check engine light came on I had it checked and it came up with a misfire in cylinder one so I replaced all spark plugs and ...
     
    • HouseCallAuto
      2/15/2014 HouseCallAuto
      Replace cylinder #1 fuel injector. This is not a sure thing but if you want to go through the trouble to confirm this without actually having to buy a new $100 injector just yet, try swapping the #1 injector with another cylinder and see if the misfire code moves with the injector to confirm. If it does change to the other cylinder then you can buy a new injector and take the time to buy it online cheaper than the auto parts stores.
  • AutoMD Member
    AutoMD Member - 2008 Toyota Sienna - Engine - 2/14/2014
    What would cause my AWD vehicle with 60K miles to drop from getting 19MPG to 13 MPG over the past 9 months?
    It dropped from 19 to 17 very slowly and then it suddenly started dropping about 1MPG with each fillup over the past month
     
    • HouseCallAuto
      2/14/2014 HouseCallAuto
      Unknown until some data from a professional scanner is viewed and a check for any fault codes. At the very least, confirm the air filter is clean, tires are inflated to correct pressures and clean the mass air flow sensor with dedicated MAF sensor cleaner. How does it run?
      HouseCallAuto
      2/14/2014 AutoMD Member
      I change the air filter every 10K miles and my synthetic oil & filter every 5K. The dashboard tire sensor light warns me when the air drops to 32 PSI from the recommended 35 PSI. I just had the oil and filter changed, air filter changed, and tires rotated several weeks ago. It runs fine, but I sense something different. It doesn't purr like it used to, if you know what I mean..
  • AutoMD Member
    AutoMD Member - 1994 Toyota Camry - Engine - 2/14/2014
    TURN ENGINE ON ANTIFREEZE WILL RETURN TO RESERVIOR FROM RADIATOR AND CAR WILL OVER HEAT
    ALL THE ANTIFREEZE WILL BE TROWN OUT OF ENGINE
     
    • John's Auto Repair
      2/14/2014 John's Auto Repair
      Your best move to make is to have the cooling system and the cap pressure checked. Could be anything
      from a stuck thermostat to a blown headgasket. This procedure will let you know.
  • alanspse
    alanspse - 1989 Toyota Pickup - Engine - 2/12/2014
    Why has my engine lost power
    I just had a new exhaust pipe and muffler installed it had plenty of power when the exhaust was broke in front of the converter but now it wont pull out of 2nd gear seems like it's suffocating I didn't have a converter installed to save money and I don't think they ...
     
    • John's Auto Repair
      2/12/2014 John's Auto Repair
      Well, then i would take it back since it ran fine before the exhaust work. Obviously, something
      in the exhaust is restricted. I would think the Catalytic Converter is fine since it is connected
      before the exhaust work.
  • AutoMD Member
    AutoMD Member - 2003 Toyota Tacoma - Engine - 2/12/2014
    What can cause my Tacoma's lack of acceleration at stoplights or onto an interstate on ramp?.
    mileage = 99,000 +. No work done on this problem. Happens pretty much all the time. Happens from any standing stop then to go. I've noticed it for approx. 2 yrs. now. check engine light isn't on. No other warning lights are on.
     
    • John's Auto Repair
      2/12/2014 John's Auto Repair
      I would try a new fuel filter. Then check fuel pressure. Also the exhaust could be restricted.
      A quick test for this is to remove the Oxygen sensor and test drive. If engine seems to be
      running a little better, then somewhere in the exhaust system is restricting exhaust flow.
      Typically it's the Catalytic Converter.
  • AutoMD Member
    AutoMD Member - 2003 Toyota Tacoma - Engine - 2/12/2014
    What can cause my Tacoma to lack acceleration at stoplights and/or interstate on ramps?
    mileage = 99000+. No work done yet. Happens all the time. Getting going from a stand still. First noticed it about 2 yrs. ago. No check engine light on. No other lights either.
     
    • HouseCallAuto
      2/12/2014 HouseCallAuto
      Have to plug in a code reader and see if any codes are stored even though light is off, codes can still be there. You can obtain a code reader from Amazon.com for around $20 with shipping incl.
    • Jimm
      2/12/2014 Jimm
      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.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • AutoMD Member
    AutoMD Member - 1991 Toyota Previa - Engine - 2/10/2014
    How do I change fan belt ?
    fan belt needs to be replaced i want to do it myself. how do I doit? Is there a diagram to show me step by step?
     
    • Jimm
      2/10/2014 Jimm
      Use the 'How-To-Guides' feature on the AutoMD website - step-by-step including photos. The parts are readily available from these many on-line sources, www.partsgeek.com, www.rockauto.com, www.discountautoparts.com, www.autopartswarehouse.com, www.jcwhitney.com - to list only a few possibilities.
      In fact, they (RockAuto) list the serpentine and other accessory drive belts from around $2.50 (each) for your vehicle
  • AutoMD Member
    AutoMD Member - 2001 Toyota Corolla - Engine - 2/10/2014
    Turn car on loud grinding noise from front , ck pwr steering fluid , filled, check belt seemed fine
    tried to take to mechanics , heat gauge went up and turning on hear did not seem to help
     
    • HouseCallAuto
      2/10/2014 HouseCallAuto
      I suspect that you have a bad water pump. Grinding can be from a bad water pump bearing and with the bearing bad the pump will usually leak coolant causing your cooling system to be low and causing the engine to run hot.
  • AutoMD Member
    AutoMD Member - 1996 Toyota Tercel - Engine - 2/7/2014
    Car shaking, rattling, and is very loud.
    I have a '96 Toyota Tercel, and I live in Ohio so it's been extremely bitter cold this winter and that's when this problem has started happening. The car is rattling and shaking really loudly whenever I go past 30-40mph, and overall just has issues accelerating. ...
     
    • HouseCallAuto
      2/7/2014 HouseCallAuto
      You need to narrow down some detail for me. I need you to determine if what you are feeling / hearing is a result of the engine running poorly or a result of something relating to the suspension / tires / etc which is a separate thing from the engine. Please better describe what you are hearing feeling so that maybe I can make that determination.
  • AutoMD Member
    AutoMD Member - 1995 Toyota Camry - Engine - 2/4/2014
    Why does my car die every time I switch to drive, or when I come to a stop?
    It started out as our oil pump gasket leak. Now it dies. It doesn't matter if it is cold or warm. I had to replace the distributer cap.
     
  • AutoMD Member
    AutoMD Member - 1998 Toyota Camry - Engine - 2/4/2014
    How do i change head gasket
    don't leak water from water pump
     
    • HouseCallAuto
      2/4/2014 HouseCallAuto
      Do not replace the head gasket unless it has been diagnosed as no good. Your details seem to imply that because you have a coolant leak and the leak is not coming from the water pump so that means the head gasket is bad. AutoZone has repair procedures for most cars accessible through their site.
  • AutoMD Member
    AutoMD Member - 1991 Toyota MR2 - Engine - 2/2/2014
    Mk2 import won't rev past 6000 When power button is pressed it won't rev past 6000 so wont change gear
    Don't think imports have MAF filter.
     
    • HouseCallAuto
      2/2/2014 HouseCallAuto
      6000 rpm seems like a lot for this 2.2 Toyota engine. It may have a rev limiter so it don't blow up.
  • jose crerspo
    jose crerspo - 2001 Toyota Camry - Engine - 1/31/2014
    No spark / no gas / after installing fuel pump.
    igot spark going to coil pack /no spark at spark plug.
     
    • alex
      1/31/2014 alex
      your coils have 12 volt power going to them do they have a switched ground to signal them. if they don't usually ignition module it with your cam and crank sensors tell your coils when to spark and that your injectors to fire
  • AutoMD Member
    AutoMD Member - 1995 Toyota Camry - Engine - 1/29/2014
    Fuel consumption is rising. What is responsible?
    Fuel consumption is rising, what is responsible?
     
    • Jimm
      1/29/2014 Jimm
      First step - have any 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.

      Possible Causes of poor fuel mileage:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)

      Sometimes, there are conditions outside the engine, such as; wheel alignment, low tire pressure, brakes dragging.
      Ignition misfire can also cause poor fuel mileage, and some causes of ignition misfire;
      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • jose crerspo
    jose crerspo - 2001 Toyota Camry - Engine - 1/27/2014
    Why my car do not has any spark on the spark plugs.
    put a fuel pump the car started and then did not started again and is not trowing spark.
     
    • HouseCallAuto
      1/27/2014 HouseCallAuto
      Determine if the check engine light is illuminated with the key in the on position. If not then it likely has a bad EFI main relay. Update the post.
 
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