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Q: My car shakes violently
Hello, It sounds like you may have a clogged catalytic converter. This may be a sign of a clogged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the...
About how much time should it take a certified bmw mechanic to analyse the cause of a squealing noise from the engine?
Over time, your car's engine belts may become worn causing them to stretch. When this happens as you press the gas pedal and the belt goes from a relatively low speed (at idle or when first starting the car, no...
If the thumping is continuous (cyclical), the cause is likely to be a defective or damaged tire. If the thumping occurs "once" and stops, it might be due to a faulty motor mount. Regardless of the origin, the faulty part...
i was driving and my car all of a sudden turned off and i started smelling gas
Hi Angel. Thanks for contacting us tonight. Usually when your car stops running and you can smell gasoline, this means that either a fuel line has broken, the fuel pump stopped working or there is a problem with one of...
2001 BMW 325Ci E46 3 series: turns over, no start, no spark, no communication on scanner. New battery was installed.
Hi there. Unfortunately, when the ECU is not connecting to the digital scanner, that's an indication of a failed ECU. This is only something that can be completed by a BMW certified repair facility, as they keep ECU programming pretty...
Radiator light keeps coming on.
If you remove the radiator cap and there is space to add coolant, you have a leak somewhere. Cooling systems on modern cars are "closed" and kept 100% full using the recovery system, which is typically a plastic overflow tank....
The intake system should be checked for leaks. A vacuum leak from items like a broken air intake boot, broken/disconnected vacuum lines, or a leaking intake manifold gasket can lean out the air/fuel mixture or disturb intake airflow enough to...
Periodically vehicle runs rough at idle.
Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...
Q: Alternator not charging battery
Hi there. To be honest, when the alternator tests as good and the battery terminals are good, this issue is typically very difficult to diagnose. In most cases however, this is either an electrical relay fault to the charging system...
Q: Car won't go in gear while on.
Sounds like the throwout bearing is hanging up. When the car is not running, nothing within the transmission is spinning, thus it is possible to put the car in gear. With the engine running, there is too much friction in...
My 2002 BMW is making a loud high-pitched sound
Hi There, Depending on whether or not the sound comes when the vehicle is moving or not will determine what may be causing this. The following are some possibilities of what could be causing this: -It could be that...
car has misfire and im struggling to rectify the problem
The first thing to check for is air leaks. Any hose or fitting that is off or loose can lead to a misfire and other issues. If you don't find a problem there, you can go about the problem systematically....
2001 bmw 325ci E46. 180,000+ Miles. Went out this morning in the snow to an appointment. Everything fine. Car won’t start now.
It is possible that your starter or alternator may have failed. I would recommend having your vehicle inspected by a qualified professional to determine if these parts are functioning properly. Consider YourMechanic as this can be done at your home...
Do i have to use synthetic oil in my bmw
The manufacturer recommends 5w40 or 5w30 full synthetic oil only for your car's engine. I would recommend only using full synthetic oils.
Q: My car is not turning over.
Cars will start with no oxygen sensor installed or a sensor that is completely failed. AutoZone has no equipment whatsoever that can DIRECTLY test the operating condition of an oxygen sensor, let alone the training to interpret the waveform that...
Car wouldnt accelerate,did tune up, now wont start.02/bmw/325ci.I bought a new battery.
Hi Charlie. Thanks for writing in today. There are a few things I would start with in regards to tracing your hard to start issue. First, if you have access to a professional digital scanner, complete a full download to...
Best motor oil for a 04 bmw 325ci ow40w or 5w40w full synthetic
The difference between these two oils is primarily the viscosity or thickness of the oil. Depending on the brand, there may be a number of other additives in play as well, however the most important component of the oil is...
My car is misfiring on several cylinders and there is coolant in my coil pack 5and 6
The presence of coolant suggests a leak and that should be resolved as a leak could be a cause of the misfiring if water creates a path to ground. If, by chance, you are referring to coolant actually in the...
My Bmw is throwing a code for system to lean, to much oxygen and not enough gas.
As the codes indicate, this means there is a lean fuel condition which may be caused by a lack of fuel supply or in some cases, a vacuum leak as you describe near the cold air intake. When a vacuum...

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