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From your description, it sounds like a professional mechanic with great electrical diagnostic skills, like a certified technician from YourMechanic, will need to look at the vehicle, with or without a wiring diagram, to get to the bottom of the...

Oil leaks can generally be addressed, although they do vary in terms of cost, depending on location. The causes of engine vibration are too varied to conclude anything without inspecting the vehicle. If the vibration is due to sticking valves...

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This seems to be a fuel issue of some kind. With the new fuel pump it would be a good idea to replace the fuel filter if your vehicle has one. If that makes no difference it is possible that...

Look at your dash when you turn on the key to see if the theft light is on. If it is, then you have a problem where the theft system is not deactivating. Try to get out and lock all...

The speedometer is electronically controlled. Typically, there is a mini stepper (positioning) motor mounted on the instrument cluster PCB and it receives a signal from a speed sensor within the transmission. A wiring harness interconnects these components. The speed sensor...

You can use a mild polish like a toothpaste that will clean the glass without scratching the glass. Use it with small circular motion to polish off the marks.

Hey there, thanks for writing in about your 2003 Hyundai Santa Fe. This kind of condition is often very confusing for a non-tech. Even though your battery cables are tight, it does not mean the connections are good. Corrosion, surface...

This is likely a charging system problem (i.e. alternator or voltage regulator). As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the...

The dealer is correct to say it is the brakes. The noise is mostly due to the material in the brake pads. The metal in the brake pads can cause a scrapping noise, then changes with temperature and will not...

The inertia switch is supposed to totally disable the fuel pump power supply when the vehicle is in an accident or rolls over. You will need to check the power connector into and out of the inertia switch to make...

Prior to doing this work, you should confirm that the "new" vehicle configuration is certifiable insofar as Federal emissions law, that is if you intend to register the vehicle. Please see the relevant Federal EPA Engine Swap Guidance Document. California,...

The first thing to check for in any drivability problem is air leaks. Any air that gets into the engine without being measured will lean out the system and cause problems. Look at all the rubber hoses and boots under...

Hello. From what you describe, it would appear that your vehicle is experiencing some sort of electrical issue. If the issue comes and goes intermittently, then the first thing I would look at is the vehicle's ignition switch. It may...

The key fob will need to be reprogrammed to the vehicle as when the battery was replaced in the key fob, the key was reset. This is why nothing is working with the key fob. If you need further assistance...

Hi there, the battery will be completely dead since the vehicle hasn't been driven for so long. You could try charging the battery overnight or try jumpstarting the car. With any luck the battery will still be able to hold...

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on...

The E 30 can be a great driving car, but at 20 years old, It can have just about anything wrong. The self-diagnostics on the car are not very sophisticated, so you will have to do a systematic diagnosis. Making...

As you may have noticed, when the vehicle is in "ECO" mode, there is a significant reduction in power that is intentionally done to reduce emissions into the environment. You can try turning this off and you should notice a...

Hi there. There should be a select button with two directional arrows on the button. Push and hold the right directional arrow on the button and the dash should go from the odometer to the menu. Then scroll up by...

Misfire codes can be caused by a range of failures. Spark Plugs, Coils, Injectors, Manifold gaskets could all be suspect. When the check engine light is on and the car has stored codes, your first reaction is to replace the...

There is a technical service bulletin (TSB) GM has put out concerning a bad ground to the electronic brake controller module or EBCM. This causes a loss of communication and sets the ABS light. There are fault codes associated with...

When the check engine light is on, it means that the ECU has detected a malfunction and stored a trouble code to tell you what it is. When the check engine light is blinking, it means that the malfunction is...

I'm sorry, but the best translation to English I was able to get was that you want us to describe the errors that you listed for your 2006 Volvo XC90. There may have been some loss in translation, but the...

This suggests that the motor have run out of oil. When the oil pressure gauge reads zero, this means that there is not enough oil pressure inside the motor to properly lubricate engine components properly. When this happens, you may...