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H4-2.0L Turbo

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"Fluttering" noise under heavy throttle/boost
Hello, thanks for writing in. If this occurs only under this high load condition then most of the time it is caused by a boost leak. I usually suspect that the intercooler has a crack as that will cause this...
Question
Feels like front right tire has vibration when turning left or merging lanes to the left at highway speed only. Bearings are okay
Hello, thanks for writing in. If the bearings are fine then the tires need to be checked first. If there is any uneven wear then this will occur. If the tires are all fine then the hubs need to be...
Question
Mechanic changed cambelt and water pump and whilst returning it, it supposedly jumped off. Engine stopped dead. No more engine
Hello. I hate to say this but it is his fault. It sounds like he is not being truthful about what happened because if that was the case it would have come off well before he worked on it. It...
Question
Slipping clutch
Clutches are supposed to slip while the clutch is being engaged so the vehicle does not jerk or lurch forward when starting out. The clutch also needs to slip when the gears are changed to ease the shock on the...
Question
Is the drive belt different from the timing belt?
The serpentine belt (aka drive belt), is the belt that drives the accessories on the front of the engine. It drives the alternator, water pump, power steering pump, air conditioning compressor, and any other belt driven accessories. This is the...
Question
Codes po102 103 113
Hi there: It's very difficult to tell you where to start if we don't know what type of troubles or symptoms you're experiencing. A professional mechanic typically will download OBD-II trouble codes first, then test drive or communicate with the...
Question
New battery car wont start..
Hi there: It's possible that you have a faulty or damaged alternator, starter, battery cables or ignition relay that is the source of the no start issues on the Saab. Since there are several components that could be faulty, you...
Question
Exhaust system
The sound of the exhaust is not determined by whether it is a turbo-back, or a cat-back system. The determining factors for the amount of sound that comes from a given system are the size of the piping being installed,...
Question
What's your take on buying a COBB access port? People say what the car runs safer with less knocks vs stock.
Hello - I suspect the answer to this question revolves around whether you are making other modifications to the engine, and how often you drive with boost pressure near the limit. This device will offer more precise control for managing...
Question
The engine stalls under acceleration
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
Question
Hard shifting into gears
As this is a new vehicle, it may be best to make an appointment with your dealership service department. A notchy shifter or difficulty putting it into different gears may indicate some adjustment issues which should be covered by your...
Question
my front wheels are not centered in the wheel wells
Hello, thank you for writing in. There are so many components that can effect the steering and alignment, that there will need to be several tests and inspections done until we find the issue. Check the tire wear for any...
Question
my car has theissue that it often lose power steering suddenly while turning.nothing leaks but there's clunky noice when turning
The only way to determine if the collision caused damage is to carefully MEASURE the alignment and, as well, the frame dimensions using a tram. If those steps have not been specifically taken, what the mechanics have told you about...
Question
What would cause the engine temperature in my 2002 Subaru Impreza to constantly fluctuate.
Hi there. If your temperature continues to do this then you either have a flow issue within the cooling system or you have a small leak in the head gasket. I usually start by doing a block test on the...
Question
2003 Subaru WRX intermittently won't start without a jump
An engine that won't crank indicates a problem with the starting/charging system. Since you said the vehicle will start with a jump, you can rule out the starter and its corresponding control circuitry. The most likely cause is a battery...
Question
Slow starting
Hi There, Generally, a weak starting car is a sign of a weak battery, however this can also be caused by a starter that is beginning to fail as well. Since you just replaced your battery, it is more likely...
Question
AT oil temp light flashing 9 long blinks and 3 short which means rear speed sensor. what is that on a 05 subaru wrx
Typically, this refers to the output shaft speed sensor, however depending on what you are reading in terms of the research, various literature will call it different things or refer to it differently. If you need additional help with this,...
Question
Clutch pedal is stuck to the floor, low pressure any ideas?
Your clutch master cylinder is probably out of fluid. Topping it off probably won't do the trick because it now has air in the system that needs to be bled out. You might be able to get some activity out...
Question
Under WOT my car hesitates and bogs once it reaches high RPMs.
Hi Juan. Thanks for submitting your question tonight. Issues at wide open throttle are typically caused by fuel restriction or fuel to air mixture problems, when the engine is getting too much fuel or not enough. This can be typically...
Question
Grinding noise when the steering wheel is straight. More prominent at higher speeds and when the steering toward the right
From what you describe it sounds like you have front wheel bearings that are noisey. They do not have to be loose to be noisey. Have the vehicle lifted and ran in drive to see if the noise can be...

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