Q: Car knocking and slow

The fuel tank has a vent valve that opens when the engine is running, as the pump sucks fuel from the tank and the tank may collapse if a high vacuum is drawn. Usually this code pops up when the...

Hello, thanks for writing in. I'd be happy to help. Steam from the engine is usually a sign of a small cooling system leak (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-coolant-reservoir). I would recommend taking a close look at the area where the steam appears to...

Hey there, thank you for asking about your 1999 Honda Civic. The computer will often times shut the compressor off as a safety default when there is not enough pressure in the system. This can also happen when there is...

Clean any debris on the battery posts using a mixture of baking soda and water. Under your battery is a pedal that connects to the PCM. Make sure that it is pushed down hard so that your battery does not...

The codes you recorded, P0304 (https://www.yourmechanic.com/article/p0303-obd-ii-trouble-code-cylinder-3-misfire-detected-by-spencer-clayton), P0171 (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn), P0301 (https://www.yourmechanic.com/article/p0301-obd-ii-trouble-code-cylinder-1-misfire-detected-by-jamahl-walker), P0300 (https://www.yourmechanic.com/article/p0300-obd-ii-trouble-code-random-multiple-cylinder-misfire-detected-by-jamahl-walker), all pertain to engine misfiring. The flashing of the Check Engine Light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) signifies that the misfiring is "active" (ongoing) and consequently you should try to get the...

Hello There! It sounds like you may have a dirty or faulty mass air flow sensor. The mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor...

Hello. The symptoms you are experiencing can be caused by many things. If the vehicle is not starting or is suddenly stalling and then displaying all of the warning lamps then that could be a sign of potential electrical problems....

Hi there. The controller to the glow plugs is malfunctioning and tripping the ECM (computer) and telling it that the engine has stalled. I recommend replacing the glow plug controller / timer unit (https://www.yourmechanic.com/services/glow-plugs-timer-replacement). If you need further assistance with...

Hello and thanks for writing in. Code P0174 relates to a lean fuel condition which is typically caused by a faulty mass air flow sensor or potentially a vacuum leak beyond the mass air flow sensor causing the reading of...