Popular questions

Hello, thank you for writing in. Due to the occurrence of your symptoms being related to the acceleration of the vehicle, it is likely that the vehicle is misfiring for one reason or another and causing an engine vibration. Misfires...

Hey there. There are combustion gas analyzers that you can buy and use on a DIY basis for this, but I would have a professional perform the diagnostic, and hopefully find the fault elsewhere (other than head gasket leak). You'll...

The low oil level is something that certainly needs to be addressed. However, it is generally not a cause for the check engine light to come on. The check engine light comes on when an electrical / electronic issues in...

The issue you are writing in about is common enough that a specific diagnostic, namely a reduced engine power diagnostic is performed by technicians dispatched by YourMechanic. If you request that diagnostic, the responding certified mechanic will get this issue...

If you are loosing coolant and had it tested without any leaks identified then you may have a head gasket leaking or a heater core leaking. Look at the exhaust to see if you see any white smoke indicating...

Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. When this happens, you...

The U0401 code broadly identifies "communication errors" in the vehicle's controller area network (CAN). In your circumstance, because the electronic throttle control (ETC) warning light has come on, an attempt should be made to diagnose the ETC system first because...

This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected...

Hi and thanks for contacting YourMechanic. The cause for the bouncing around the road is a loose suspension, loose steering, or failed shock. Check all of the suspension control arms and check the sway bars front and rear. Check the...

The easiest way to test for spark is to pull the spark plug boot off of the number 3 cylinder spark plug and install a spark tester. Most auto parts stores have them for a few bucks. The spark plug...

Hi There, It is possible that the misfire (depending on how severe) may have produced enough of a jolt in the vehicle to cause the traction control system to detect a change in the stability of the vehicle. The traction...

Hi There, The SLIP light relates to your vehicle's traction control system that helps to control the vehicle in certain driving conditions. The traction control system monitors the steering and stability of the vehicle and engages when loss of traction...

The code P0420 can be caused by the catalyst, O2 sensors before and after the catalyst. If both O2 sensors and catalyst was replaced then you may have an exhaust leak at the manifold or pipes. I suggest you have...

Hi there. If you were to get an ECM (engine control module) from the dealership, the dealership will flash (program) the ECM to the VIN number to your vehicle and all of the specs. However, if you were to purchase...

It only takes a small amount of corrosion to interrupt the flow of current. You probably just have a dirty light socket. If you get a small strip of 400 grit sandpaper and rub it on the contact surfaces in...

Your instrument cluster can be displayed in three languages: English, Spanish, and French. To change the language that is shown, follow these steps: 1. Press the Up/Down buttons on the steering wheel until Settings is displayed on the instrument panel,...

Hi Carlos. Thanks for contacting us. There are a few things that might be causing these type of starting and engine running problems. The first and most obvious would be that the engine is not getting either enough fuel -...

Hi There, This is a dangerous situation which could be caused by a couple of different things. You may have a brake pad that is sticking to the rotor causing it to get red hot generating the smoke, or potentially...

Hello - since you didn't appear to be leaking oil in a significant way (busted oil line, hole in the pan), I suspect that the oil pressure relief valve may have been stuck in the "relief" position. Some of the...

Hi Twan. Thanks for contacting us today. A Reduced Power light usually indicates a fairly serious problem with the throttle system. When this light illuminates the vehicle will often go into a “safe mode”, which will severely limit the speed...

This is a known problem with this vehicle related to a faulty brake master cylinder. The symptoms are very similar to what you are describing in that the brakes will feel as if they are being applied when the car...

Hello. There does not appear to be any special tool required to remove the knock sensor on an 84 Corvette. Only the correct size socket should be needed in order to loosen and remove the sensor. The sensor is located...

If the brakes on a car are not functioning properly, they absolutely should be inspected and repaired. Among the many causes of grabbing brakes are contaminated brake pads (dust, grease, fluid), misaligned calipers, loose brake mounting bolts, seized caliper pistons...

Malfunctions in the EGR (Exhaust Gas Recirculation) system would not affect the ignition system or battery. If the EGR system has a fault, the service to request is EGR system diagnostic/inspection. If your vehicle engine continues to run after the...

Adjusting the brightness of your dash helps you preserve your night vision and drive more comfortably. It’s also easy to do on the Civic. Here’s how: Locate the brightness control knob on the dash of your car Turn it...