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Subaru engine repair questions and answers

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  • chevyblazer
    chevyblazer - 2004 Subaru Impreza - Engine - 3/21/2013
    I have an issue with the engine turning over and I have spark air and fuel what could it be
    Help me
     
    • spanionneo
      3/20/2013 spanionneo
      Check your battery voltage. A weak battery will keep certain modules from functioning properly. Without any loads on battery, it should read no less than 12.4 volts. Any less, replace.
    • neomyejohn
      3/21/2013 neomyejohn
      Have you checked the engine plugs that are attached to the engine from the battery? This is where the problem might be. Just check it but if the problem persists, have a mechanic check it for you.
      http://4wheelonline.com/Cold_Air_Intakes.151438
  • jasonb
    jasonb - 1986 Subaru Brat - Engine - 3/8/2013
    Replaced battery and now there is no power to key .
    i took test light seems to have power to starter ? any ideas where to look .thanks..
     
    • CVO
      3/8/2013 CVO
      Could be a bad starter ?

      First, check the battery and starter cables for their tightness or free of corrosion and physical damaged.

      See this Starting system simplified diagram. Have a help from an assistant to crank the engine, use a 12 volt light tester or a digital voltmeter, apply it to the starter control circuit.
      If there is light or 12 volts and the starter isn't cranking, then the starter is the culprit. Have the starter to bench test for free at the local auto parts stores.
      If there isn't no light or no volts, then the ignition switch is the culprit.
      Check the starter relay and position the Automatic transmission shifter in neutral.

      http://www.samarins.com/glossary/starter.html

      Note: a 3/4 charge battery is 12.50 volts
      A discharge battery is 11.75 volts.
      A battery under a cranking load and it is reading less than 7 volts,it will be a recycled battery.
      CVO
      3/16/2013 jasonb
      thanks for the response cvo,jason.. there again i have power to starter , but no power to anything when key is on..prev owner (lost keys) i think. and added a aftermarket igition i will start with testing starter ..thanks again
    • Jason
      3/8/2013 Jason
      Check cable connections, check fuses. Do you have power to the small wire on the starter when you turn the key?
  • rolandbigley
    rolandbigley - 2002 Subaru Forester - Engine - 2/21/2013
    Car idles rough hesitates when driving all speeds, eats gas bad when running this way but comes out of it then runs fine
    for a few days to a week then starts running bad again. check engine light came only code read : bank 1 sensor 2 P0136, replaced: plugs,fuel filter,air cleaner,02 sensor [downstream] checked for leaks, loose wires ect. cleaned fuel system. need help getting ...
     
    • HouseCallAuto
      2/21/2013 HouseCallAuto
      Replace the front O2 sensor even though there is no code. use a direct fit sensor only, no universal sensors.
      HouseCallAuto
      2/21/2013 rolandbigley
      ok will try that by direct fit do you mean factory subaru or is bosch ok? thanks
      HouseCallAuto
      2/21/2013 HouseCallAuto
      I simply mean do not use a universal sensor, use a sensor that comes looking just like the one you remove and requires no splicing of wires.
      HouseCallAuto
      2/23/2013 rolandbigley
      thank you
  • rolandbigley
    rolandbigley - 2002 Subaru Forester - Engine - 2/21/2013
    Ck engine light came on code ....bank1 sensor2 P0136 whats that
     
    • Jason
      2/21/2013 Jason
      Oxygen sensor after the catalytic converter, and connected to cylinder one exhaust.
      Jason
      2/21/2013 rolandbigley
      thanks i have a question all ready posted about it idling rough no power house c wanted to know about the code but no response yet any ideas ?
      Jason
      2/21/2013 rolandbigley
      is that the upstream or downstream one?
      Jason
      2/21/2013 Jason
      Downstream. The downstream O2 measures converter efficiency, and it shouldn't cause a rough idle. Do you have any other codes?
      Jason
      2/21/2013 rolandbigley
      nope
  • orbit123202
    orbit123202 - 1985 Subaru GL - Engine - 2/20/2013
    Timing or air/fuel issues
    I have a stock carb on my GL and after driving the idle bogs down and car wants to die. Iv adjusted the one screw on front top that you can get to without removing anything to get idle correct but car still doing same thing iv been told i need to adjust the screw ...
     
    0 answer
  • orbit123202
    orbit123202 - 1985 Subaru GL - Engine - 2/20/2013
    Carb issues timing i believe
    I have an issue with my idle i adjusted i believe idle screw one on top with flat head screw it gets idle correct but after driving idle bogs down and car wants to die ppl saying there is another screw to adjust but i need to remove the roll pin or something i have ...
     
    0 answer
  • rolandbigley
    rolandbigley - 2002 Subaru Forester - Engine - 2/19/2013
    Idles rough, when driving at any speed stumbles and hesitates when i push on gas then like it comes on,
    70000 miles replaced plugs. fuel filter, down stream 02 senser, dont do it all the time runs fine for a couple days then acts up comes out of it runs fine ect....check engine came on had it read said it was 02 replaced didnt help whats up ?
     
    • HouseCallAuto
      2/19/2013 HouseCallAuto
      I want to know the code number please, not what the code reader referred to it as. Was that the only code?
      HouseCallAuto
      2/20/2013 rolandbigley
      it read bank 1 sensor 2 P0136
      HouseCallAuto
      2/20/2013 rolandbigley
      and it had a new exhaust put on from cat on back thank you
  • rintintin067
    rintintin067 - 1996 Subaru Legacy - Engine - 2/17/2013
    Engine keeps overheating after driving a mile
    it will drive about a mile before the heater quits working and it gets hot. it pushes all the antifreeze into and out of .the overflow tank. as it cools it sucks it all back in. I have replaced the temperature sensor, water pump, timing belt, radiator, and radiator ...
     
    • HouseCallAuto
      2/17/2013 HouseCallAuto
      There is an air vent plug on the radiator to bleed the air out. Did you loosen this and bleed out air after filling the cooling system? If you did and that is all good then you have to do what is called a cooling system combustion gas check. You can buy this inexpensive tool or rent it for free from a large chain auto parts store by just leaving a deposit. You may have to pay for the liquid chemical that it uses. I suspect you have a blown head gasket.
      HouseCallAuto
      2/17/2013 rintintin067
      yes i bled the air out. no change. Could it possibly be a clogged catalytic converter?
    • HouseCallAuto
      2/17/2013 HouseCallAuto
      Yes it could but if that were the case then your car would have no power, it would be noticeably difficult to get the car up to speed. If your power is there then it is not the cat. Anything that causes you to overheat and lose your heater is related to the engine. This reeks of bad head gasket. If you start the engine cold, put your hand on the radiator hoses and if they become noticeably under pressure in just a few minutes then it more says bad head gasket.
      HouseCallAuto
      2/17/2013 HouseCallAuto
      But a clogged cat would not cause your heater to stop functioning and would take a much longer time to raise the engine temperature. I personally have never seen a clogged cat "overheat" and engine but have seen a clogged cat make an engine run hot.
  • jessip1980
    jessip1980 - 1997 Subaru Impreza - Engine - 2/10/2013
    I am pulling motor out and it won't separate from transmission does any body have diagram
    I want to make sure I have all the bolts out need a diagram and a hint to get it separated
     
    • Jimm
      2/10/2013 Jimm
      Check these websites for the repair manual; www.diyrepairmanual.com, www.manualspace.com. You can also try the local library and any local auto parts stores for the manuals / diagram.
      Jimm
      2/11/2013 jessip1980
      Thank u I'll check it out
  • jessip1980
    jessip1980 - 1997 Subaru Impreza - Engine - 2/7/2013
    Replaced timing belt now car won't start
    the belt didn't break it was just for maintenance looked over timing marks several times it will turn over but not start
     
  • chill88
    chill88 - 1996 Subaru Legacy - Engine - 2/6/2013
    My car feels like it is dying.
    my subaru has a little shy of 158,000 miles on it. It hesitates, putters, losses power, stalls out if i sit at light to long or brake quickly, and misfires in 3 of 4 cyliders. I usually get 25-30 mpg, i've been getting maybe 15. It happens cold or hot. It starts ...
     
    • ezautobody
      2/6/2013 ezautobody
      i have the same exact problem..please let me know if you have found out the solution
  • drdoud
    drdoud - 1999 Subaru Forester - Engine - 2/4/2013
    Continued valve cover leak on one side with all new seals? Could the cover be warped or are there tricks to sealing?
    any tips would be appreciated, can you take apart without replacing seals or should the gasket be replaced every time you remove the cover?
     
    • Joe Boulay
      2/4/2013 Joe Boulay
      Hello
      Hopefully the gasket did not move out of position when you re installed the valve cover. These engines are notorious for head gasket leaks and rear crank seal leaks . Make sure those are not your source of oil loss before you go too much further.
      Hope this helps
      Joe Boulay
      Automotive Technician & Author
      joe@joeboulay.com
      www.joeboulay.com
  • lisakopas
    lisakopas - 2008 Subaru Outback - Engine - 2/2/2013
    Why does my car make a siren like noise while I'm driving?
    Over the past 2 weeks my car has been making a siren like noise while I am driving. It only lasts about 5 seconds & by the time I turn down the radio to see where its coming from, the noise is gone. It seems to happen in the early morning hours (4-7am). Sometimes it ...
     
    • rick
      1/4/2013 rick
      Things like this can be very hard to find untill it happens more . I'm sure your dealer told you the same thing . Sorry but you might have to keep driving it untill it acts up enough for someone else to hear it .
    • seansalzarulo
      2/2/2013 seansalzarulo
      This could be a few things. From experience, I can tell you that my roof rack will make a hum at highway speeds if there is an extremely strong crosswind that hits the crossbars just right. The moment I realize that the rack is making noise it seems to go away - this is probably because I slow down to see if I can hear the noise better, but this changes the wind speed across the rails, and therefore stops the noise. Also - some of these vehicles had an issue with rear wheel bearings making some noise at highway speeds after they've gone about 50,000 miles - defective bearings?. The dealer should be well aware of this as well, and there should be a Subaru Tech Bulletin about it floating around out there - the wheel bearings are covered under an extended warranty (I do not have the specifics regarding the mileage or age limitations on that warranty). If your dealer doesn't know about this, then I suggest speaking to a Subaru Regional Director or Manager, or, if feasible, see if another local dealer can assist (if there is another one in your area). Good luck… Just because the service tech can't duplicate the noise doesn't mean there is no problem. Don't take no for an answer if it's really bothering you.
    • seansalzarulo
      2/2/2013 seansalzarulo
      This could be a few things. From experience, I can tell you that my roof rack will make a hum at highway speeds if there is an extremely strong crosswind that hits the crossbars just right. The moment I realize that the rack is making noise it seems to go away - this is probably because I slow down to see if I can hear the noise better, but this changes the wind speed across the rails, and therefore stops the noise. Also - some of these vehicles had an issue with rear wheel bearings making some noise at highway speeds after they've gone about 50,000 miles - defective bearings?. The dealer should be well aware of this as well, and there should be a Subaru Tech Bulletin about it floating around out there - the wheel bearings are covered under an extended warranty (I do not have the specifics regarding the mileage or age limitations on that warranty). If your dealer doesn't know about this, then I suggest speaking to a Subaru Regional Director or Manager, or, if feasible, see if another local dealer can assist (if there is another one in your area). Good luck… Just because the service tech can't duplicate the noise doesn't mean there is no problem. Don't take no for an answer if it's really bothering you.
    • seansalzarulo
      2/2/2013 seansalzarulo
      Sorry - posted twice in error. The TSB is # 246863 - The dealer should be able to look this # up and review the Tech Service Bulletin and remedy.
    • HouseCallAuto
      2/2/2013 HouseCallAuto
      Its not a wheel bearing because the noise from a bad wheel bearing, although it does sound like a siren, it will not go away after a few minutes. I think you have a loose heat shield (broken / rusted through retainers or welds) that is vibrating and giving off a harmonic sound because they are like pieces of tin. When the exhaust system reaches full temperature the high frequency vibration is dampened. I would lay under the car and use the side of your fist and smack upwards in different places of the exhaust system and try to "hear" the noise. Do it when the car has not been started up yet for the day, ice cold.
  • psue321
    psue321 - 2000 Subaru Impreza - Engine - 1/28/2013
    Why does car act like gas tank is full when pumping gas?
    When I put gas in the car it will make the pump stop every dollar or two like it should when it's full, but it isn't full. Can move nozzle around to start pumping again then it stops again like it's full. Check engine light not on. Just bought car used and don't ...
     
    • 1beastlydude
      1/28/2013 1beastlydude
      most cars have a vent on the ank either to atmosphere or to (thanks to al gore) a vapor canister under the hood, you may have a blockage in this

      Gas pumps work off of vapor pressure when there is little to no vapors they pump fine, this is when the extra vapors funnel out the vent
      however they shut off when the vapors stop venting
      like when the fuel reaches the top of the tank, or in your case some thing is blocking the flow of vapors
  • roadrat
    roadrat - 2001 Subaru Outback - Engine - 1/28/2013
    Small patch of motor oil on top of air filter
    Is that from a gasket leak
     
    • Jimm
      1/28/2013 Jimm
      Usually, the oil patch is due to the PCV system and small filter located inside the air cleaner box - being saturated with oil. Simply replace the small PCV breather filter foam piece (usually less than $2.00) with a new one.