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Subaru engine repair questions and answers

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  • 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.
  • drew
    drew - 2006 Subaru Impreza - Engine - 9/2/2014
    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 ...
     
    0 answer
  • 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
  • AutoMD Member
    AutoMD Member - 1999 Subaru Legacy - Engine - 8/4/2014
    My car won't start and we tried jumping it but nothing will work. The battery says were at 12 volted though?
    So my car won't start and we tried jumping it but nothing happened. No sounds no nothing. But the lights and radio are coming on. So we checked the battery to see what it says and it's right at 12 volted. I don't know what's wrong.
     
    • jdl
      8/4/2014 jdl
      I'd have to make sure battery has a full charge. Next, I'd have to check the wiring circuits at the starter for voltage and ground. Any testing at the starter, make sure tranny is in park or neutral and parking brake is set. Is this an automatic or manual tranny?

      Some of the national brand autostores will test the battery for you, they will also test the starter, if you take it to them.
  • AutoMD Member
    AutoMD Member - 1990 Subaru Legacy - Engine - 8/3/2014
    Why would my car have a sputtering sound but only vibrate when accelerating & only be felt in the gas pedal and shifter
    When the car is idling there is no abnormal sound. once I accelerate and hit anywhere from 20 mph and 35 mph I hear a sputtering sound. Then once it gets to about 40 when I push on the gas pedal the sputtering sound gets louder. But the only place I feel the ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1998 Subaru Legacy - Engine - 7/27/2014
    Car wont start sometimes?!?!
    when the car gets up to temp and you shut it down it wont start, if it sits for a while it wont start, and its getting worse
     
    • CVO
      7/27/2014 CVO
      Camshaft position sensor ?

      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 $ 17.69 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
  • AutoMD Member
    AutoMD Member - 2001 Subaru Legacy - Engine - 7/19/2014
    Engine won't turn over
    Driving down the highway, oil temp light and transmission light came on. Drove for a short distance then the engine stalled and I coasted to a stop. Lights, radio etc still work but car won't restart. Just a weird clicking noise
     
    • jdl
      7/19/2014 jdl
      Does the starter motor crank ok? If so, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, check fuel pressure.

      How long since a tune-up? Check for applicable trouble codes. Battery has a full charge?
      jdl
      7/19/2014 AutoMD Member
      Thanks for replying. The starter does not crank. Battery does have a full charge.
      jdl
      7/19/2014 jdl
      Is the engine froze-up? Next, I'd check voltage and ground circuits at the starter motor. Any testing at the starter make sure the tranny is in park or neutral and the parking brake is set.
  • AutoMD Member
    AutoMD Member - 2002 Subaru Forester - Engine - 7/7/2014
    Why is my AC turning hot at stop lights or when the car is in park?
    I drive a 2002 Subaru Forester. When you first turn on the car and turn the AC on, everything works properly. The AC works properly when it the car continues driving (like on a highway for example), but when the car is sitting in park or at a stop light for a longer ...
     
    • CVO
      7/7/2014 CVO
      Check the radiator and the condenser ( if equipped ) fans to see if both are running when the AC is on. Check the condenser for any debris stuck on it, use the water from the garden hose to remove the debris.

      Note: when the the car continues driving, the ram air will help to remove the heat from the condenser.