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H4-2.5L Turbo

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Misfire still after tuneup
Hi there. If the spark plug, plug wire and ignition coil are good, then the issue may be inside of the engine. I would do a compression test first to see if there is any internal failure. If the compression...
Question
Chattering noises coming from transmission
Hello. From the symptoms you've described it would appear to me that there may be an issue with the clutch disc or perhaps flywheel. If the contact surfaces of either are excessively worn it may cause intermittent chatter, as you...
Question
I think my cv boot came off!
I am glad you asked this question. I am going to go through some steps with you to ensure that you have the correct problem diagnosed. When you look at the wheel well on the side where you...
Question
Clutch not engaging
Hi there! It sounds like there may be a a little air left in the clutch hydraulic system. Air in clutch lines will cause the exact scenario you describe. The air will be moved to a different location in the...
Question
Transmission
Hey there, thanks for writing in. It sounds like your clutch is due for replacement. If you "smell the clutch" and the RMPs are increasing, but the speed is not, then it is pretty much a slipping clutch. Your best...
Question
AC compressor.
The clutch assembly to your A/C compressor commonly fails. If the compressor on the left front side of the engine has a rust color, then it is likely it needs a clutch kit with shims. Diagnosis of your A/C should...
Question
Ticking noise when turning hard - 2012 Subaru Impreza
Hey there. I would start with inspecting the CV joints and axles as this is a common noise that can come from this area of the car when they are worn or need to be replaced. This may also be...
Question
Car hesitates when I put my foot into it.
Hi there, thanks for writing in. I'd be happy to help. This is a common symptom of a failing mass air flow sensor or throttle position sensor. A mass air flow sensor is a unit that monitors the air flow...
Question
Why would Oil Pressure Light come on while braking?
Hello. I don't know how often you check your oil level, but I would certainly check it now. Turbo-charged engines consume a bit more oil during an oil change interval than non-turbo engines, and it's possible your oil level is...
Question
2 Major jerks felt today while accelerating from stop.
Hi there. There could be an issue with the throttle position sensor (TPS) or a sticky throttle plate. First check to see if the throttle plate is sticking. If the plate is working properly, then check the TPS for any...
Question
Car loses some engine power when the blower is turned on.
A minor loss of power when the fan is engaged is probably due to the air conditioning compressor. When the air conditioning, or the heater, is switched on, it activates the compressor. The light squeal is most likely coming from...
Question
Turbo is not boosting - is this fixable?
Hello. If your engine is not boosting properly then it may be related to the actuator. In most cases turbo wastegate actuators should be difficult to move by hand, as they are designed to open up as boost pressure increases....
Question
Got a code of p0851 on 04 Forester xt. Shifter was stuck in park but I was able to jiggle it free. Today the oil light was flicking and stalling. Are these Related?
Hi there. The neutral safety switch (transmission position switch (sensor)) on the transmission and the engine oil light on the dash have nothing in common. If the neutral safety switch has failed, then the transmission may start in gear or...
Question
Accident messed up air ride suspension. car is in lowest position. not able to move without flat bed tow 2016 Subaru WRX STi
Unfortunately, aftermarket air ride systems would not be something servicable by YourMechanic. However, I would recommend taking the vehicle to the place that installed the aftermarket air ride system to see if they can repair your vehicle. They would likely...
Question
Metal Shavings In Engine From Turbo
When it comes to metal shavings in the engine, you have to understand that those shavings will go everywhere. They will get between moving parts and cause further damage. They can get into the rings on the pistons and score...
Question
Steering wheel has a lot of "play" or movement.
Hi there. The first thing you would need to do is perform a dry park steering test. Have someone get in the car and set the parking brake. Then have them start the engine and turn the steering wheel left...
Question
Check engine light
Hello. P0171 is the trouble code for a lean condition at bank 1. This can be caused by a wide variety of issues, primarily issues with the engine management or fuel systems, and therefore can sometimes be difficult to diagnose....
Question
Do I have to "burp" my radiator?
No you do not. You should make sure the overfill expansion tank is filled to the full line when engine is cold. Use 50/50 coolant mix.
Question
Engine seals are leaking oil
As you may know, there are many different oil seals throughout the engine that can leak. In order to further narrow this down, it may require the vehicle to be inspected to determine specifically which seals are leaking and need...
Question
Loud noise under car- only when turning- and hard to steer
Hi there. In most cases, when the car is hard to steer and you hear noises, it's due to low power steering fluid. However, it could also be caused by a damaged serpentine belt or power steering pump pulley. The...

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