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L6-2.5L

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Idle problem
Turning on the headlights creates an electrical load that the alternator must supply. Of course, as the alternator works harder to supply the electrical energy, the engine must in turn supply more power. One possible explanation for the fluctuating idle...
Question
Knocking/using octane
Ethanol is a convenient octane booster. If the fuel as vended has no ethanol in it, and you are able to obtain an octane booster that is 100% ethanol (i.e., has no other "additives"), you can add that "booster" up...
Question
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...
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My car is 04 325ci, 205k miles, never abused. While driving, especially when going up the hills, the engine suddenly stalls and l
EML is for Engine Management. That indicates a problem detected in the Engine control system. Brake and DSC are telling you there is an issue with the Dynamic Stability Control which is integral with the Brake system. There are likely...
Question
Losing coolant
You probably have a leak, and the first place I would look is the radiator. Most likely you will see evidence of a leak at either of the two bottom corners. But don't stop there. Your car has a pretty...
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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...
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Buying used car and checking for oil burning
Hello, thank you for writing in. Testing for oil burning usually means opening up the engine to see if the pistons and exhaust manifold show signs of oil. You can also check your spark plugs to see if there is...
Question
2004 bmw 325i hvac blower not powering
In a circumstance like this where the fault is not obvious (e.g., fuse, blower motor resistor block, blower motor open windings), the standard procedure is to use the factory wiring diagram and simply trace the entire circuit from the power...
Question
My car misfires when it's cold al so idling rough
Hello, thank you for writing in. The vehicle may be having one of several issues including clogged fuel injectors, poor compression (metal expands when hot), any of your air intake sensors, or a vacuum leak. The valves and lifters can...
Question
Checking car for oil burning
The crankcase is a closed system and this kind of test does not show anything on this cars engine since if you open the oil cap the engine will run rough due to sucking in all the fresh air. The...
Question
Bad fuel pump
It sounds like you may have a damaged AC compressor or compressor clutch. As you may know the AC Clutch is the pulley that spins with the Belt. There are two ports on the rear of the Compressor. One is...
Question
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...
Question
1999 BMW 323i wont go in reverse it will drive but just not back up. Sometimes when run awhile it tries to go back when put in rev
The first order of business will be to read the stored codes in the transmission controller. A generic scan tool like the use at the auto parts stores and tire shops will not do the trick in this case. It...
Question
How much would the tune up be for a 2001 BMW 525i?
Hi there. Today's automotive tune-up is mainly based on mileage or the recommended services by the individual manufacturer. To review what services are due for your BMW, and determine what maintenance services are recommended, click this link to the service...
Question
Gas pedal stuck intermittently
Hi Khaled. A sticking throttle pedal or dripping or leaking gasoline is not a normal thing and is something that should be inspected onsite by a professional mechanic as soon as possible. In some cases, damage to the throttle position...
Question
What is your hourly rate my
The cost of YourMechanic inspections, diagnostics, and repairs are based on industry standard and cataloged "repair times". In other words, the price you pay is calculated based on an industry standard "average" time that it takes to perform the specified...
Question
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.
Question
When I am reversing then try to put it into drive my car shuts off and the steering wheel locks.
Hello in Canada! In most cases, when you have a problem as you've described, it's caused by a reverse lockout or safety switch failure. This is located under the shifter console and can wear out overtime. It's also possible that...

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