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Subaru engine repair questions and answers

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  • enzo71
    enzo71 - 2001 Subaru Forester - Engine - 11/24/2014
    Why does my vehicle run at low idle and sometimes has no power and stalls and other times runs fine just with low idle
    Catalytic converters are good and no vacuum or intake leaks have been found
     
    0 answer
  • drew
    drew - 2006 Subaru Impreza - Engine - 11/14/2014
    Why does my car not start after refuelling?
    After putting gas my car does not start. When I turn the ignition switch the car tries to start but it doesn't turn over. Eventually in order to start I press on the accelerator and the car starts but immediately dies (by stalling). What I need to do is keep ...
     
    • Eric Bellen
      11/14/2014 Eric Bellen
      Chances are it's the EVAP purge solenoid stuck in the open position causing the intake manifold to be "flooded" with fuel vapors after refueling
  • lisa noell
    lisa noell - 1998 Subaru Impreza - Engine - 11/14/2014
    When I fill up the car has trouble starting. I have to pump pedal & rev up then it goes fine. gas odor til car 3/4 full
    319,000 miles. I have maintained car. In the last 6 months had fuel filter replaced, timing & water pump replaced, fuel cleaner in car lots, oil changes regularly, air filters changed. The car runs great except when I stop to fill up. Then I have to lay on pedal to ...
     
    • Eric Bellen
      11/14/2014 Eric Bellen
      I have heard of this a couple times now, turned out to be EVAP purge solenoid stuck open causing the intake manifold to be "flooded" by fuel vapors when you fill up
  • pothica
    pothica - 1997 Subaru Impreza - Engine - 11/12/2014
    Why does my car hesitate when I step on the gas?
    Sometimes when I accelerate, it seems like the car stalls or pauses a bit before it wants to get going. It kind of chugs for a second and then gets to the right spot/gear. Especially if I haven't warmed my car up, or I'm going up a hill from a stop. Also, It hasn't ...
     
    • GT500Knights
      11/12/2014 GT500Knights
      The power steering is most likely not the cause of the main problem you're having. However it's possible the power steering and transmission both use the same fluid, so make sure the leak is coming from one and not the other. Check for any stored codes. Report them here. Hesitation can be caused by numerous problems to name a few:

      Faulty ignition system
      Clogged fuel filter
      Weak fuel pump
      Vacuum leaks
      Dirty air filter
      Dirty maf sensor
  • andrew
    andrew - 2008 Subaru Impreza - Engine - 11/9/2014
    What can I check for on my car?
    So my car has a misfire in cylinder 1,2 and 3. Things I notice is a little rough idle, no more than 21 mpg city/highway.after I cold start it let in warm up for a minute take off, when I put the clutch in and the rpm drop it drops so low it stalls out until I drive ...
     
    0 answer
  • Ashley
    Ashley - 2002 Subaru Outback - Engine - 10/27/2014
    How do I diagnose the oil sending unit?
    I was driving on interstate and all at once it started smoking and all lights came on , on dash board, and it quit and won't start ??? Never had a problem before and no warning lights came on?
     
    0 answer
  • Nasser
    Nasser - 2005 Subaru Legacy - Engine - 10/4/2014
    Can I replace 2.5i engine to 2.5gt engine??
    Same year 2005
     
  • skoobydo
    skoobydo - 1997 Subaru Legacy - Engine - 10/4/2014
    My car is over heating
    replaced thromost, replace bad hose, c
     
    • CVO
      10/4/2014 CVO
      1. Loss of coolant because of a coolant leak is probably the most common cause of engine overheating. Possible leak points include hoses, the radiator, heater core, water pump, thermostat housing, head gasket, freeze plugs, automatic transmission oil cooler, cylinder head(s) and block.

      Make a careful visual inspection of the entire cooling system, and then PRESSURE TEST the cooling system and radiator cap. A pressure test will reveal internal leaks such as seepage past the head gasket as well as cracks in the head or block. A good system should hold 12 to 15 psi for 15 minutes or more with no loss in pressure. If it leaks pressure, there is an internal coolant leak (most likely a bad head gasket but possibly also a cracked cylinder or engine block).

      It is important to pressure test the radiator cap, too, because a weak cap (or one with too low a pressure rating.

      2.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.
  • RippingRizzler
    RippingRizzler - 2001 Subaru Impreza - Engine - 10/2/2014
    2001 Impreza died while driving, now won't start. It would turn over at first but now just clicks.
    Full of gas, battery reads 12.4 volts. Changed the fuel filter, checked the pump, tried to jump it directly through a truck's battery. Could it be the spark plugs or the started maybe?
     
    0 answer
  • ronald havens
    ronald havens - 1998 Subaru Legacy - Engine - 10/1/2014
    Engine hesitates upon slow acceleration
    temp guage fluctuating with acceleration
     
    • Jimm
      10/1/2014 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
  • drew
    drew - 2006 Subaru Impreza - Engine - 9/2/2014
    Why does my car not start after refuelling at a gas station?
    After putting gas my car does not start. When I turn the ignition switch the car tries to start but it doesn't turn over. Eventually in order to start I press on the accelerator and the car starts but immediately dies (by stalling). What I need to do is keep ...
     
    • CVO
      9/2/2014 CVO
      A. A malfunction evap. purge valve may the cause of this problem. Un-metered gas fumes could add into the combustion chamber and they're causing the combustion to ignite properly.

      See this Fig. Example EVAP System

      http://www.autozone.com/.../...rGuideContent.jsp

      Use the mouse arrow and scroll more than 1/ 2 of the page to see the Fig.

      B. The check engine light doesn't have to be ON to store a fault code.

      Check the vehicle for fault codes to see if there are any sensors were involved to the malfunction of the engine.

      1.Local auto parts stores such as Autozone ( not in California) or Advance Auto parts or Pep Boys will scan and retrieve any diagnostic trouble codes ( dtc ) stored in the powertrain control module for free of charge..

      2. Amazon.com has the code reader for less than $ .00 dollars + shipping
      Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles

      3.Re-post the dtc's in here " answer question " for further assistance.

      Note: we need the dtc's to identify the sensor, there are a dozen different ELECTRONIC sensors to operate the car.

      Visit this site and see all the different sensor definitions.

      Powertrain Control Module (PCM)
      Throttle Position (TP) sensor
      Mass Air Flow (MAF) sensor
      Intake Air Temperature (IAT) sensor
      Idle Air Control (IAC) valve
      Engine Coolant Temperature (ECT)
      Heated Oxygen Sensor (HO2S)
      Camshaft Position (CMP) sensor
      Knock Sensor (KS)
      Vehicle Speed Sensor (VSS)
      Crankshaft Position (CKP) sensor

      www.freeautomechanic.com
      CVO
      9/3/2014 CVO
      CORRECTION..A malfunction evap. purge valve may the cause of this problem. Un-metered gas fumes could add into the combustion chamber and they're causing the combustion to ignite improperly.
  • olrag
    olrag - 1998 Subaru Legacy - Engine - 8/25/2014
    Why does my 98subaru legacy sputters and dies?
    Car sputtered and died on me, acted like had no gas even though gauge read there was fuel. put in some gas started right up. filled tank half way, test drove about 15 miles.Car sputtered and died on me, called tow truck. when tow truck came car started had it towed ...
     
    0 answer
  • olrag
    olrag - 1998 Subaru Legacy - Engine - 8/25/2014
    Why does my 1998 Subaru legacy sputter and die
    Car sputtered and died on me, acted like had no gas even though gauge read there was fuel. put in some gas started right up. filled tank half way, test drove about 15 miles.Car sputtered and died on me, called tow truck. when tow truck came car started had it towed ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1998 Subaru Legacy - Engine - 8/9/2014
    I am trying to put a forced cold air intake in my car and switch out the stock, I did this previously to my 1995 legacy
    theres something under the hood i dont know what it is. when i try to put my intake in, it doesn't fit but fits on my old car which seems like this other part has been removed. I have a diagram that I highlighted if someone can tell me what this part is under the ...
     
    0 answer
  • SubieChris
    SubieChris - 1994 Subaru Impreza - Engine - 8/6/2014
    I have the ej18 engine on my 1994 subaru impreza and it is AWD with 185,000 miles. Will an ej20 or an ej22 fit my car? C
    I live in New England and have driven it kind of hard since I got it back in october and have kinda burned out the syncro for second gear sgould I get a transmission with the better engine.
     
    0 answer