Auto Answers » Engine » Nissan

Nissan engine repair questions and answers

Post your Nissan engine question or share what you know by answering questions

3889 Questions
Sort by:
  • xboxt13
    xboxt13 - 1993 Nissan Sentra - Engine - 2 hours ago
    A gas+oil mixture is sitting under the spark plugs and it will not start. cylinders 1+2 were not firing originally
    Have been working on this car for a few weeks now; sat for 8 months with the fluid. The gas+oil under the plugs was the original problem. We took the plugs out and tried to start the car a few times to shoot the gas+oil out of the cylinders. All the cylinders ...
     
    0 answer
  • xboxt13
    xboxt13 - 1993 Nissan Sentra - Engine - 2 hours ago
    A gas+oil mixture is sitting under the spark plugs and it will not start. cylinders 1+2 were not firing originally
    Have been working on this car for a few weeks now; sat for 8 months with the fluid. The gas+oil under the plugs was the original problem. We took the plugs out and tried to start the car a few times to shoot the gas+oil out of the cylinders. All the cylinders ...
     
    0 answer
  • jimmyv51
    jimmyv51 - 2001 Nissan Maxima - Engine - 3/19/2015
    How to repair PO174 and PO420
    Easy and Direct repair, Fast Way! Thank You
     
    • Jimm
      3/19/2015 Jimm
      A code P0174 may mean that one or more of the following has happened:
      •The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors can leak the silicone potting material used to protect the circuitry.
      •There could be a vacuum leak downstream of the MAF sensor.

      Possible solutions include:
      •In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with MAF-specific spray cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.
      •Inspect all vacuum and PCV hoses, replace if necessary
      •Check for a dirty fuel filter and proper fuel pressure

      A code P0420 may mean that one or more of the following has happened:
      Leaded fuel was used where unleaded was called for
      A damaged or failed oxygen sensor (HO2S)
      Downstream oxygen sensor (HO2S) wiring damaged or connected improperly
      Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
      Retarded spark timing
      The oxygen sensors in front and behind the converter are reporting too similar of readings
      Leaking fuel injector or high fuel pressure
      Cylinder misfire
      Oil contamination

      FYI see this link

      http://www.obd-codes.com/p0420
      Jimm
      3/20/2015 jimmyv51
      Need a shop to repair po420, po174
  • Scott Pierce
    Scott Pierce - 2006 Nissan Titan - Engine - 3/17/2015
    Why is my truck running rough and smoking
    My truck has over 150,000 miles. It smokes a white to light blue smoke when I crank it and is using oil. I have to add a quart / quart 1/2 of oil to it each week. Will ride smooth while under a strain but shakes when it shifts into high gear. If shifted into a lower ...
     
    • Jimm
      3/17/2015 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.

      Do not skip this important first step - there are literally hundreds of possible fault codes. Avoid wasting/ throwing money at the problem.
  • nacho
    nacho - 2001 Nissan Sentra - Engine - 3/17/2015
    Why my rpm goes up and down?
    I got code p0505 and i replaced the air idle control valve, i reset the code but my car is acting weird the rpm goes up and down and never stop doing that i have no codes, i heard i have to reprogram the throttle unit, is that true? If it is, how do i do it? ...
     
    0 answer
  • klayne34
    klayne34 - 2005 Nissan Altima - Engine - 3/17/2015
    My trunk had a leak so after getting the water out left the trunk open for a few hours and also unhooked taillight
    Now my car will turn over but not crank all lights come on
     
    0 answer
  • klayne34
    klayne34 - 2005 Nissan Altima - Engine - 3/17/2015
    My trunk had a leak so after getting the water out left the trunk open for a few hours and also unhooked taillight
    Now my car will turn over but not crank all lights come on
     
    0 answer
  • Karenann77
    Karenann77 - 2000 Nissan Pathfinder - Engine - 3/16/2015
    Jerking 2000 Pathfinder
    I have replaced spark plugs and wires but I still can feel jerking. I don't know what else to do. The check engine light is not on. Can anyone help??
     
    • Jimm
      3/16/2015 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
  • Karenann77
    Karenann77 - 2000 Nissan Pathfinder - Engine - 3/16/2015
    Jerking 2000 Pathfinder
    I have replaced spark plugs and wires but I still can feel jerking. I don't know what else to do. The check engine light is not on. Can anyone help??
     
    • Jimm
      3/16/2015 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
  • Karenann77
    Karenann77 - 2000 Nissan Pathfinder - Engine - 3/16/2015
    Jerking 2000 Pathfinder
    I have replaced spark plugs and wires but I still can feel jerking. I don't know what else to do. The check engine light is not on. Can anyone help??
     
    • Jimm
      3/16/2015 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
  • Deepak
    Deepak - 2003 Nissan Sentra - Engine - 3/15/2015
    Coolant reservoir has dried greenish residue at bottom & Engine oil level has gone down drastically.
    vehicle's mileage - 101600 Miles I have removed Coolant reservoir & cleaned dried greenish residue. Filled reservoir with new Super Tech 50/50 Antifreeze/Coolant Pre-Mix. Engine Temperature Gauge showing normal temperature. Coolant reservoir has gone down month ...
     
    • Jimm
      3/15/2015 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.

      Do not skip this important first step - there are literally hundreds of possible fault codes. Avoid wasting/ throwing money at the problem.
  • jimmyv51
    jimmyv51 - 2001 Nissan Maxima - Engine - 3/13/2015
    PO174 is it the same as PO171
    I asked before for PO174
     
    • Jimm
      3/13/2015 Jimm
      A code P0174 may mean that one or more of the following has happened:
      •The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors can leak the silicone potting material used to protect the circuitry.
      •There could be a vacuum leak downstream of the MAF sensor.

      Possible solutions include:
      •In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with MAF-specific spray cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.
      •Inspect all vacuum and PCV hoses, replace if necessary
      •Check for a dirty fuel filter and proper fuel pressure
  • jimmyv51
    jimmyv51 - 2001 Nissan Maxima - Engine - 3/13/2015
    Engine Light is on, it has codes #s PO420, and PO174
    Code by CarMD scanner!
     
    • Jimm
      2/26/2015 Jimm
      A code P0420 may mean that one or more of the following has happened:

      Leaded fuel was used where unleaded was called for
      A damaged or failed oxygen sensor (HO2S)
      Downstream oxygen sensor (HO2S) wiring damaged or connected improperly
      Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
      Retarded spark timing
      The oxygen sensors in front and behind the converter are reporting too similar of readings
      Leaking fuel injector or high fuel pressure
      Cylinder misfire
      Oil contamination

      P0171 = System Too Lean (Bank 1)
      Basically this means that an oxygen sensor in bank 1 has detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. The P0171 is one of the more common trouble codes.

      This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses that reading and adjusts to keep the engine running at that optimum ratio of 14.7:1. If something is not right and the PCM cannot maintain the 14.7:1 ratio, but rather there is too much air, it triggers this code.

      A code P0171 may mean that one or more of the following has happened:
      •The MAF (Mass Air Flow) Sensor is dirty or faulty
      Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
      •There could be a vacuum leak downstream of the MAF sensor
      •Possible cracked vacuum or PCV line/connection
      •Faulty or stuck open PCV valve
      •Failed or faulty oxygen sensor (bank 1, sensor 1)
      •Sticking/plugged or failed fuel injector
      •Low fuel pressure (possible plugged/dirty fuel filter!)
      •Exhaust leak between engine and first oxygen sensor

      Possible Solutions:
      A lot of times, cleaning the MAF sensor and finding/fixing vacuum leaks fix the problem. If you're on a tight budget, start there, but that may not be the fix for certain. So, possible solutions include:
      •Clean the MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
      •Inspect all vacuum and PCV hoses, replace/repair as required
      •Inspect all hoses and connections in the air intake system
      •Inspect and/or test the intake manifold gaskets for leakage
      •Check for a dirty fuel filter and proper fuel pressure
      •Ideally you'll want to monitor short and long term fuel trims using an advanced scan tool
      •If you have access, you may want to run a smoke test
      Jimm
      3/13/2015 jimmyv51
      I asked about PO174, not PO171! Thank You
    • Jimm
      3/13/2015 Jimm
      A code P0174 may mean that one or more of the following has happened:
      •The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors can leak the silicone potting material used to protect the circuitry.
      •There could be a vacuum leak downstream of the MAF sensor.

      Possible solutions include:
      •In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with MAF-specific spray cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.
      •Inspect all vacuum and PCV hoses, replace if necessary
      •Check for a dirty fuel filter and proper fuel pressure
  • zercmon
    zercmon - 2006 Nissan Altima - Engine - 3/12/2015
    Weird noise coming out of my Nissan altima
    there is a loud whining noise coming from my car recently it has gotten more common when it has first rested for a little bit like 5+ hours. it also does not get any louder at all same pitch the whole time https://www.youtube.com/watch?v=tmNukDYUkio&feature=youtu.be
     
    0 answer
  • cbyrd
    cbyrd - 2004 Nissan Murano - Engine - 3/11/2015
    It starts in the morning fine & when I get off work but if I stop at a store shut it off it won't start.
    If I shut it off it sometimes will not start and I have to wait for about 20-30 mins then it will start and run just fine. I have been told a dead cell in my key, the starter, etc so I would like to find out what it is and get it fixed
     
    0 answer