Subaru engine repair questions and answers
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The_Doc - 2009 Subaru Impreza - Engine - 9/10/2012Got a spark coming out of the ignition control unit, am going to replace it because I think the Arizona heat might have caused it to crack. I am just wanting to make sure there is nothing else that could have caused the problem, any thoughts?
JT Rager - 2002 Subaru Outback - Engine - 9/9/2012I think it's probably electrical. Only electrical function that works is the chime when the door is open and keys are in. Other electrical equipment like clock, lights, and unlocking the car using the key remote fob don't work. When I turn the key nothing happens, ...
9/9/2012 CVOFirst, 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 shifter at neutral.
Victoria Bergesen - 2006 Subaru Forester - Engine - 9/8/2012It almost sounds as if the engine were revving, but there is no increase in rpms, so I don't think it is the transmission. There are 110,000 miles on the car and I have been diligent with maintenance. The car is not loud when stopped.
michelle cordell - 2006 Subaru Legacy - Engine - 9/5/2012Just happened overnight
9/1/2012 CVOLoss 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.
9/5/2012 AaronHeres a good write up on head gasket leaks and over heating
John L - 2005 Subaru Outback - Engine - 9/3/2012Bought car with 161K miles. It was a good deal until this happened at 163k miles. I did not even make the first service appointment. Will Subaru fix this if there is a recall, or, if valves are bent, can this be rebuilt in my garage? Any cheap, used engines out there?
jasonb - 2005 Subaru Outback - Engine - 9/2/2012hello all.. we just bought an 05 outback 3.0r vdc ..car has 161k looks like 60k 1 owner ect... in town temp is normal .. wife and i went for a drive 30 miles on interstate and then back another 30 miles on way back car was running verry hot did not go to red bar ...
Marcia - 2004 Subaru Outback - Engine - 9/2/2012
8/26/2012 JimmFirst step - have the check engine light scanned - for free -at any local auto parts store; Advance Auto, Auto Zone, NAPA - and post a reply as 'add answer' with the specific fault code for further assistance. It may be a question of compatibility with the aftermarket converter - but more detail will be available with the fault code.
9/2/2012 Aaron02 sensor
mechanic I am not - 1999 Subaru Legacy - Engine - 8/30/2012This has happened on three of the four plugs, I was able to get two out, but the last one is being very difficult. I'm using a pick set, mostly the hook one, to try and pull it out. Very little room between the block and frame. Any other suggestions?
Mary - 2007 Subaru Impreza - Engine - 8/28/2012
Troy - 2007 Subaru Impreza - Engine - 8/26/2012There is more oil in the # 1 and 2 chambers than the # 3 and 4
Mark - 1991 Subaru Legacy - Engine - 8/26/2012The car will start but dies when the accelerator is pressed down. The fuel pump, fuel filter, fuel tank screen, and spark plugs have all been changed/replaced. Checked the fuel flow at the engine and it appears that it is getting the proper amount of fuel. It still ...
subaru - 2006 Subaru Outback - Engine - 8/25/2012
8/25/2012 CVOCheck this sensor.
The Idle Air Control (IAC) valve controls the engine idle speed and dashpot functions. The valve is located on the side of the throttle body. This valve allows the necessary amount of air, as determined by the Powertrain Control Module (PCM) and controlled by a duty cycle signal, to bypass the throttle plate in order to maintain the proper idle speed.
Stalls after start when engine is cold
Stalls after start when engine is hot
Stalling on deceleration
Stalls at idle
Diesels or runs on after the engine is shut off
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 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 $20.00 dollars.
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 sensors to operate the car.
Visit this site and see all the different sensors.
Navigate to this site and see the code reader
Outback Bill - 2004 Subaru Outback - Engine - 8/24/2012(Odo is at 140K.) The check engine light is not on. No other warning lights are on. This hesitation does not occur in every instance. It can occur with hot or cold engine. Problem is now eight weeks old. I removed and replaced the fuel pump/filter module ...
8/24/2012 JimmCheck these items first - before targeting the converter....
Possible Causes of Engine Hesitation or Stumble:
Dirty fuel injectors (cleaning the injectors often fixes this).
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
mike8440 - 1998 Subaru Legacy - Engine - 8/24/2012What has caused this condition and how costly would it be to repair
beachmamavb - 1997 Subaru Legacy - Engine - 8/22/2012It does not smell like oil, and it's not running hot...what could it be?