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Scion engine repair questions and answers

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  • Austin Bowles
    Austin Bowles - 2005 Scion xA - Engine - 11/22/2014
    Why is my check engine light on?
    Check engine light came on driving down highway. No adverse noises or leaks. Car operating normal.
    • Jimm
      11/22/2014 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 (numeric value) for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      There are literally hundreds of possible fault codes, so having this detail is important to save both time and money (yours) in terms of correcting this issue.
  • Trish
    Trish - 2005 Scion xA - Engine - 10/15/2014
    Had camshaft replaced at dealership, now oil is pouring out of car.
    130,000 miles, check engine light had been going off and on for awhile, took it to dealership and they said the camshaft needed replaced. Turned it in for the repair and then they found the oil control valve was not working and said it most likely caused the issue. ...
    • Jimm
      10/15/2014 Jimm
      Not sure what is an oil control valve? Is this the specific part the dealership stated they have replaced?
      10/15/2014 Trish
      Here is what I have found online....The engine ECU can command the system to advance or retard the inlet camshaft timing, thereby providing for faster response. The hardware is a camshaft timing oil control valve mounted adjacent to the inlet camshaft gear wheel and a VVT-i controller mechanism built onto the inlet camshaft timing gear. The camshaft timing oil control valve is a spool valve, controlled via a coil and plunger by the engine ECU. It can signal "advance", "hold" or "retard".
      10/15/2014 Trish
      ...when the engine ECU requires a change in inlet timing, it signals the oil control valve to provide oil pressure to either the advance or retard side of the four vane chambers. A locking pin in the controller locks the camshaft timing in the maximum retard position for engine start-up and immediately after start-up (until oil pressure is established) to prevent any knocking noise.
      10/15/2014 Trish
      This is the part they said still needed replacing and then when oil started pouring out, they said it can happen when this part is bad. However, it's never leaked that I have noticed.
    • Jimm
      10/15/2014 Jimm
      Ok - typically the camshaft oil control valve is replaced at the same time as the camshaft is replaced. Take the vehicle back to the dealership for the correct repairs.
  • David
    David - 2008 Scion xB - Engine - 9/20/2014
    Car locked up, won't turn over, feels like emergency break is on (light is on, break isnt)
    My car was running, I came back to drive it and the wheel would barely turn. I turned it off then went to turn it on and it wouldn't turn over (power windows, AC, and dash still work). Feels like emergency break is on.
    • Jimm
      9/20/2014 Jimm
      If the engine will not start (no starter action), then the problem is not brake related. Several possibilities; faulty battery, faulty /loose /corroded battery cable or terminal connection.
  • David
    David - 2008 Scion xB - Engine - 9/19/2014
    Car locked up, won't turn over, feels like emergency break is on (light is on, break isnt)
    My car was running, I came back to drive it and the wheel would barely turn. I turned it off then went to turn it on and it wouldn't turn over (power windows, AC, and dash still work). Feels like emergency break is on.
    0 answer
  • allen
    allen - 2007 Scion tC - Engine - 8/23/2014
    Recently rebuilt the engine everything was fine for a couple wks now the svce light is on and code p2111 is reading
    i took the throttle body off tapped on it sprayed it down replased it and it worked fine for 10 mins then code p2111 popped back up and i have virtually no throttle control again like before m email is [email protected]
    0 answer
  • Bstearns
    Bstearns - 2005 Scion xB - Engine - 8/17/2014
    Loss of power while driving and all dashboard lights on.
    I have a stock 2005 Scion xB with approximately 130,000 miles. For the past few months, sporadically, weird electrical things would happen, like hazards would come on and stay on by themselves. This eventually led to the battery dying, so I bought a new one. ...
    0 answer
  • AutoMD Member
    AutoMD Member - 2005 Scion xA - Engine - 7/17/2014
    When I turn the key to start the car there is a hesitation before it starts.
    I thought it might be the battery but the battery light has not come on. Then I thought maybe it could be a starter problem. I'm sort of dumb when it comes to cars.
    • jdl
      7/17/2014 jdl
      Are you saying there is a starter motor hesitation before it cranks? If so, nothing wrong with your thought process. I'd have to make sure the battery has a full charge, all battery and starter motor connections all clean and tight. Good voltage and ground, not much if any voltage drops across wiring circuits.

      I also thought about your ignition switch and if you have automatic, some type of neutral switch issue? You need to do some testing before replacing parts. Any testing at the starter, make sure tranny is in park or neutral and the parking brake is set.

      Some of the national brand auto stores will test the starter for you, if you take it off and take it to them.
  • AutoMD Member
    AutoMD Member - 2008 Scion xD - Engine - 6/16/2014
    When I make a left turn I hear what sounds like sloshing water and water comes into passenger compartment. I don't on r
    This first occurred during or just after heavy rains. However - Rain has stopped, water is no longer coming into the passenger compartment, but I still hear the sloshing sound on a left turn. I don't hear this sound on a right turn.
    • GT500Knights
      6/16/2014 GT500Knights
      two possibilities i can think of
      1. water still trapped inside dashboard ducting
      2. heater core has developed a leak

      if your heater core has gone bad it will start to leak coolant into passenger compartment. it is located within dashboard area, sometimes directly in the middle, but usually more on the passenger side. when it leaks, it will drip coolant into cabin area, and you will be able to smell it
  • AutoMD Member
    AutoMD Member - 2008 Scion xD - Engine - 6/1/2014
    Engine sputters/loses power
    When car has been running 20+ minutes, the engine sometimes sputters/loses power and the "check engine" light comes on. I've had two sensors replaced but no luck. Any suggestions for what's wrong/how to repair welcome. Thanks.
    0 answer
  • AutoMD Member
    AutoMD Member - 2007 Scion tC - Engine - 4/12/2014
    Thank you in advance, I have a 2007 scion tc that just got transported across the country via truck transport, and now after the trip the check engine light came on. The codes read the following, P0455- Evaporative emission control system pressure leak detected- ...
    • HouseCallAuto
      4/12/2014 HouseCallAuto
      You need to do a smoke test to find the leak. The most common cause for these two codes is the gas cap but when that does not solve it you may have a leak at the leak detection pump. That is why I say have a smoke test done because I don't want you replacing the LDP (which you could easily do) and get disappointed if it don't solve it.

      By the way, you can build your own smoke machine if you go on YouTube and use search term "DIY smoke machine"
  • AutoMD Member
    AutoMD Member - 2005 Scion xB - Engine - 4/6/2014
    When changing gears, I can feel my car accelerate, why is this?
    battery light came on 3 times but for less than a minute but battery is not even 2 years old. Also, when I turn on the car, it makes a loud screeching noise but if I turn off the car and then turn it on again, it stops. the noise also starts when I turn on heater ...
    0 answer
  • tjlollino
    tjlollino - 2006 Scion tC - Engine - 8/31/2013
    Why does my car die when I turn on the ac??
    2006 scion tc and the car has a new throttle body because the Toyota dealer said it would fix the random stalling that was going on while driving but they were not a 100% that it would fix the stalling when the ac was turned on.
    • wbrockstar
      8/31/2013 wbrockstar
      Did they also replace the IAC(idle air control)valve that is normally bolted to the throttle body??If not I would replace it.Anytime the ac is turned on it creates a additional load on the engine,so this valve allows more air to bypass the throttle body so that the cars idle will raise,compensating for the drag the ac puts on the engine.
  • tjlollino
    tjlollino - 2006 Scion tC - Engine - 8/31/2013
    Why does my `06 Scion tc die when A/C is turned on?
    The car is a 2006 scion tc with a 2.4L AT trans. I had Toyota work on the car and told me that the throttle body was bad so I put one on and the car still dies when the ac is turned on even if I rev it up and turn it on.
    • frankiedonnn
      8/31/2013 frankiedonnn
      Hi tjlollino, The a/c/ puts an extra load on the engine so the computer is suppose to raise the idle when the a/c/ is turned on,which the I.a.c. motor is suppose to do. It could be that the idle air motor needs cleaning or it is bad .Don't pull the pintle out of the i.a.c. motor unless you are planning to replace it. There are specs. for checking the resistance and voltage in the sensors and proceedures to follow to avoid damaging the processor, so I suggest purchasing a repair manual for your model if you intend to attempt it .
  • lucbeltran
    lucbeltran - 2008 Scion xD - Engine - 8/15/2013
    When changing a 2008 Scion XD Camshaft Timing Oil Control Valve Sensor, do I need to reprogram the computer?
    I changed the sensor and the car starts but doesn't stay on, it only stays on if I hit the gas.
    • Jimm
      8/15/2013 Jimm
      First question - which sensor was changed? Was this the camshaft position sensor? Second question, which installation steps were followed for the cam position (CPS) sensor? Here are the removal and install steps;

      Remove the wiring and retaining screws of the sensor, then slide it out of its mounting hole. Examine the sensor for damage from impact, as this may indicate movement in the camshaft or sludge buildup that will need to be addressed before replacement. To replace, simply insert the new sensor in the mounting hole, and replace the retaining screws and wiring.

      A defective camshaft position sensor will set a trouble code that must be cleared. Clear codes with a code reader, and then drive the vehicle through two drive cycles consisting of driving around town in stop-and-go traffic and then a few miles of highway driving. Turn the engine off for a few minutes between cycles; this should enable the readiness monitors. This drive cycle is known as the "relearn procedure," and each manufacturer has its own specific way to accomplish it. Usually will require around 20-30 minutes of normal drive time.

  • sara.stevens
    sara.stevens - 2009 Scion xD - Engine - 8/12/2013
    When the AC is on and I turn left my car makes a strange noise (sounds like water and squeals) and leaks (cont'd below)
    on the passenger under the dash water. Now it has stopped blowing any air through the fan. HELP! PLEASE! I just had my oil changed right before this started happening.
    • wbrockstar
      8/12/2013 wbrockstar
      Sounds like the weep hole is clogged on the ac.Ever noticed water dripping or puddling up on the ground under your car when the ac runnin,thats where the water comes from.Look for a hole near the bottom of firewall(pass side)and it normally has some black silicone around hole or itl be a plastic tube.Might have to lay a piece of cardboard down,lay on your back and look near bottom of car to find it.You also might try turnin the ac on for a few minutes so you can tell where it is,cause a lil water might drip out.Take a coat hanger and try to push it up in the hole,goin in and out until you get a good stream coming out.Youll know when you break the clog free
      8/12/2013 sara.stevens
      Thank you sooooo much! I'll let you know how this goes:)
      8/15/2013 sara.stevens
      So i found the weep hole and unclogged it.... lots of water. But my fan isn't working still. Any thoughts?