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Hyundai engine repair questions and answers

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  • r57aldridge
    r57aldridge - 2008 Hyundai Sonata - Engine - 3/22/2015
    Can a bad camshaft timing sensor cause a 2008 hyundai sonata with a 4cyl. to knock?
    2008 hyundai sonata with a 4cyl. engine and 122000 miles. The check engine light came on about a week before the car started knocking. It does not smoke or miss and no other codes are showing. The computer says its a camshaft timing sensor. It knocks when idling and ...
     
  • Judge Smails
    Judge Smails - 2004 Hyundai Accent - Engine - 3/21/2015
    Power comes on very suddenly when accelerator is applied. Have probably 50% power with 15% of pedal travel.
    Like something other than my right foot is controlling the throttle. Makes driving in traffic difficult (have manual trans). What is the issue ?? I recently bought this car and there is no way it came from the mfg like this (has 150 K mi). But otherwise runs well.
     
    • MANIKMECHANIK
      3/21/2015 MANIKMECHANIK
      Do you have a check engine light? Have the boneheads at autozone scan it if you don't know a real mechanic with a scantool. Don't quote me on this , but my sight unseen shot in the dark is that its gonna be a TPS. (throttle position sensor)
      MANIKMECHANIK
      3/23/2015 Judge Smails
      Thank you. No, no engine light, no computer codes. And I just did an experiment a few minutes ago. I was cruising at steady 60mph on the highway, pedal about 10% of way down. Increased that to about 20% and just held it to see what would happen. It just kept going faster and faster and had reached 85 (still accelerating slowly) when I backed off. With 20% accelerator pedal. Obviously something is allowing the throttle to open beyond the pedal.
  • ChrisH
    ChrisH - 2002 Hyundai Sonata - Engine - 3/12/2015
    2002 Sonata starts for a few seconds and stalls.
    I have a 2002 Sonata 2.4l that had been running rough. I had a check engine light but have no reader. A mechanic advised me to change the Camshaft Position Sensor. The sensor connector plastic crumbled when I tried to connect the new sensor. I broke in to pieces ...
     
    • ChrisH
      3/12/2015 ChrisH
      wish i knew how to delete this duplicate question
  • ChrisH
    ChrisH - 2002 Hyundai Sonata - Engine - 3/12/2015
    2002 Sonata starts for a few seconds and stalls
    I have a 2002 Sonata 2.4l that had been running rough. I had a check engine light but have no reader. A mechanic advised me to change the Camshaft Position Sensor. The sensor connector plastic crumbled when I tried to connect the new sensor. I broke in to pieces ...
     
    0 answer
  • Please help
    Please help - 2004 Hyundai Santa Fe - Engine - 3/3/2015
    Cannot diagnose problem. when engine sensors are replaced they still show problem & go from rich to lean or lean to rich
    Engine light is on. When I put my foot on the gas the rpm goes up but the car will not go above 25mph. Local mechanic said to go to dealership as he could not diagnose problem. Dealership wants $99 per hour to diagnose. Please help! thank you.
     
    • Jimm
      3/3/2015 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.

      Do not skip this important first step - there are literally hundreds of possible fault codes. Avoid wasting/ throwing money at the problem.

      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
  • kg
    kg - 2003 Hyundai Elantra - Engine - 2/26/2015
    What's wrong with my car.
    Rpm started dropping between 2&3k when accelerating then died later that day. Now my car cranks but will not turn over. all the accessories work. I tried junping it .Battery is completely charged I was thinking spark plugs and a coil pack. but somebody is telling ...
     
    0 answer
  • Shelby
    Shelby - 2003 Hyundai Elantra - Engine - 2/24/2015
    My vehicle is leaking a clear, lightly viscous fluid and has a hard time defrosting/heating
    After oil change on 2/5/2015, my car started leaking a lightly viscous, clear, non-odor fluid in large quantities. It somewhat evaporates during the day but leaves a ring of evidence on the driveway after it dries. It won't defrost and won't heat unless on full ...
     
    • Jimm
      2/24/2015 Jimm
      Most likely a cooling system leak - check the radiator reservoir tank and refill with 50/50 mixture of water and anti-freeze, as needed.

      Perform a cooling system / radiator pressure test when the engine is cold - as a first step to locate the leak.
      Obtain a loaner tool / free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly, NAPA, Advance Auto, or PepBoys. Follow their instructions and pump it to an adequate air pressure 12 -15 psi or the pressure rating listed on the radiator or reservoir cap. Observe the leaks and perform the repair.
      Note: do not over pressurize beyond the pressure allowed by the radiator cap, then test the radiator cap as well.
  • Shelby
    Shelby - 2003 Hyundai Elantra - Engine - 2/24/2015
    My vehicle is leaking a clear, lightly viscous fluid and has a hard time defrosting / heating.
    After getting my oil changed on 2/5/2015, the car started leaking a large quantity of clear but somewhat viscous fluid - large quantities (first noticed 2/21/2015). It is not engine oil and doesn't smell. It won't defrost in the a.m. and is still at zero heat ...
     
    • Jimm
      2/24/2015 Jimm
      Most likely a cooling system leak - check the radiator reservoir tank and refill with 50/50 mixture of water and anti-freeze, as needed.

      Perform a cooling system / radiator pressure test when the engine is cold - as a first step to locate the leak.
      Obtain a loaner tool / free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly, NAPA, Advance Auto, or PepBoys. Follow their instructions and pump it to an adequate air pressure 12 -15 psi or the pressure rating listed on the radiator or reservoir cap. Observe the leaks and perform the repair.
      Note: do not over pressurize beyond the pressure allowed by the radiator cap, then test the radiator cap as well.
  • Matt M
    Matt M - 2003 Hyundai Sonata - Engine - 2/24/2015
    Engine Light: Not reaching temp quickly enough
    I have a 2003 Hyundai Sonata v6 GLS with 104,000 miles. I never have any problems with it except each year, during the winter, the check engine light comes on. It's always the same code, that the engine doesn't reach temp quickly enough. This happens after 4 or 5 ...
     
    • sayyid
      2/23/2015 sayyid
      make sure you have antifreeze in there instead of water and make sure it is mixed properly or buy 50/50
    • Jimm
      2/24/2015 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.
      There are literally hundreds of possible codes - so this first step is important to begin any diagnosis.
  • carla
    carla - 2001 Hyundai Santa Fe - Engine - 2/23/2015
    Sound just like a bad power steering pump. But, to my suprise after replacing with a new one. It still makes the sound.
    Makes the sound all the time. From time u turn on til u turn it off. Also, doesn't have any trouble steering at all. Everyone says it sounds like powering steer pump but, its apparently not. Replaced it with a brand new one. What could it be?
     
    0 answer
  • LBD
    LBD - 2013 Hyundai Elantra - Engine - 2/21/2015
    Clicking noise under hood
    the noise is present when the car starts and doesn't change while driving. It's a constant sound.
     
    • Jimm
      2/21/2015 Jimm
      Noises are difficult if not impossible to diagnose via the internet - for obvious reasons. First step - raise the hood to inspect for the location / source of the sound yourself. Too many possibilities to suggest given the limited detail provided.
  • Roger Brockmeyer
    Roger Brockmeyer - 2002 Hyundai XG350 - Engine - 2/19/2015
    For diagnostic purposes: Is the crank sensor tied in with any other sensors, such as the cam sensors.
    The vehicle will run at times and then quit. No spark. Then for some unknown reason, it will later start again
     
    • Jimm
      2/19/2015 Jimm
      The crankshaft position sensor does not share common wiring or connections with the camshaft position sensor. Each sensor has it's own wiring, circuit and connection point.

      However, each sensor provides feedback / information to the Powertrain Control (PCM) or Engine Control (ECM) module - as one common point.
  • samukai14
    samukai14 - 2000 Hyundai Accent - Engine - 2/18/2015
    My 2000 hyundai Accent GL will not keep power when I  turn on my headlights,  I noticed my dashboard light and  he
    My 2000 hyundai Accent GL will not keep power when I  turn on my headlights,  I noticed my dashboard light and  headlights will gets dim and later turn off completely after  two minutes or less the engine will shot down completely.  I change the battery ...
     
    0 answer
  • Daniel
    Daniel - 2005 Hyundai Elantra - Engine - 2/17/2015
    Haven't changed timing belt at 104000 miles.is this bad?
    Also haven't tuned up, replaced belts, serviced trans.or coolant, is this bad?
     
    • kyle
      2/17/2015 kyle
      most if not all timing belts i believe should be changed ever 75.000 miles i was told but i have seen them go longer
    • Jimm
      2/17/2015 Jimm
      Could be - best way to find out for sure is keep driving and skip these recommended maintenance items. The probable outcome would be bad - and costly.
      Typically,the timing belt should be changed every 60k miles - as example.
      Jimm
      2/17/2015 CVO
      Follow Jimm recommendations to the letter.

      Timing Component Kit

      Timing Belt Component Kit W/Water Pump TCKWP284 Interference engine application
      Timing Belt Component Kit TCK284 Interference engine application

      Replace the timing belt now or head valves and piston will collide when the timing belt breaks.

      See this link for Interference Engine Application.

      http://www.gates.com/.../...ge-search-results
  • cody
    cody - 2009 Hyundai Accent - Engine - 2/14/2015
    Belt makes noise when damp
    When it is raining or damp under the hood it sounds like a clicking noise as a belt turns. The noise goes away as the car warms.
     
    • Jimm
      2/14/2015 Jimm
      Several possibilities; worn / faulty drive belt tensioner, belt misaligned, other belt-driven component worn bearing.

      Have you raised the hood to listen and inspect the source of the noise for yourself?