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There are a couple possibilities. The lock actuator motor in the left front door could have gone bad. There could be a broken wire, the most common spot would be in the door jamb where the wires bend. A qualified...

Hi, thanks for writing in. The blinking light means you most likely have a misfire in one or more cylinders from an oil leak, from the valve cover getting on spark plug boots and shorting the cylinder out. The valve...

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Usually these bolts can be tightened very snugly by hand and be just fine. Almost as tight as you can but not quite. If you do not have the feel for this particular tightening method, the torque specs are likely...

You may have a mass airflow sensor that is contaminated or not working correctly. The sensor can get contaminated by dirt, debris, and oil from aftermarket oil-type air filers. You can try and clean the sensor and use a standard...

Hi, if you run tend to run the car all the way down to empty before filling up, the fuel pump will experience more wear and tear. The fuel in the tank helps to keep the pump cool and anything...

Personally I lean toward the Mercedes when comparing these three vehicles. Audi's are nothing more than Volkswagons unless you are considering something in there sport utility class. Here is a link that will give you some quantifiable hard data I...

This may be related to a failing power steering pump or low power steering fluid levels. As you may know, the power steering system uses a pump, normally driven by a belt. The pump supplies pressure as it is turned...

Hi there: The throttle position sensor is the most common component that causes similar idle issues you're experiencing, so it makes sense that replacing the TPS might be a good start. However, other issues could include dirty throttle body or...

I believe you need to replace all of your mounts. You are saying it is touching the frame, so I would suggest the rest of them be replaced also. You may also look around and see if you have anything...

Hi there. Check the fuel pump to see if it is energizing, and check the fuel pump relay to see if it is clicking when you turn on the key. If the relay is not clicking, then remove the relay...

Hi there. Your issue might be caused by a faulty O2 sensor. You might want to read this article about the P0174 OBD-II trouble code as it will show you possible causes, symptoms and solutions to resolve the problems. ...

A concern like this can be produced by a number of different things. Such as; a large vacuum leak in the intake system, lack of airflow to the intake system, lack of fuel delivery caused by a failing fuel pump,...

In the event that diagnostic trouble codes have been set by the PCM, downloading those codes will greatly narrow the possibilities that you have to consider. No spark could be due to bad grounds (possibly in the plenum area; see...

Hello, thanks for writing in about your BMW 750i. I have worked on automobiles for many years and replaced many valve cover gaskets, and have never heard of someone using a ruler for anything related to that repair. However, it...

Your car's engine oil and lubricating system should have no impact on the transmission control function. This may be related to a separate issue such as a faulty transmission control module or low transmission fluid levels. As you may know,...

Has the engine been run while overheating to the point where the engine shut off? The engine power is reduced warning message has come on because the vehicles computer picked up a problem in the control system. There may be...

Hi. The first thing that comes to mind is the turbo seals. When they leak, pressurized oil enters the intake of the engine. Check your oil level often. Repairing or replacing turbo’s can be very expensive. The other possibility is...

A shudder when turning all the way one direction or the other can be a result of low power steering fluid pressure. This can be caused by several different issues from a loose drive belt, to a bad pump, to...

This is a pretty common issue for your vehicle. The most likely cause of your concern is a bad shifter motor for your transfer case. Other common failures are of the transfer case control module and the actual switch that...

Since you have had the water pump and intake gasket replaced in the last two years, I would recommend having the system pressure tested and inspected to see if the radiator is leaking or the water pump is leaking again....

This may be related to a faulty throttle position sensor or potentially a dirty or failing mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the...

You can try and re-calibrate the steering by starting the car and turning the steering wheel from straight ahead to left more than 360 degrees, then returning back to center. Next, turn the steering wheel to the right from center...

The latch assembly that springs the door open is faulty internally. These can be removed and a new unit installed. Trim tools should be used to pry the fuel door latch unit out to prevent damage to the paint on...