Q: My door lock 2002 Civic won't fully actuate when the engine is off.

The most common cause of this revving is either a stuck throttle or the mass airflow (MAF) sensor. This fault should be addressed as soon as possible for normal operation as this revving can become dangerous if the vehicle is...

Would need more information on the car and engine you have but the problem sounds like a misfire from the ignition system or carburetor problems.

You had a good start by tracing the wires and making sure they were clean, dry, and not damaged. To make sure you covered the entire circuit, I recommend you use an official wiring diagram to check this. It is...

The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this...

The problem you describe about the lights going off and on are usually caused by the headlight bulbs overloading the head light switch built in circuit breaker. I would recommend replacing the headlight bulbs with factory specified bulbs and then...

Ignition coils (https://www.yourmechanic.com/services/ignition-coil-replacement) are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly. The insulation develops small fractures that open when heated and close when cooled. When open, they allow shorting of coil...

Overheating can damage many engine components such as the thermostat, crankshaft position sensor, and so forth. Overheating does damage alternators but the overheating in alternators is typically caused by electrical overloads, that is too much current flowing through the alternator....

Yes, firmware, the BCM (body control module), temperature outputs, the harness, faulty batteries, could all be potential causes of this sort of intermittent fault. The problem you having is probably not common though because I do not see a pattern...

A few different things will usually cause the vehicle to start and then die (https://www.yourmechanic.com/services/car-starts-and-then-dies-inspection). A bad ignition coil (https://www.yourmechanic.com/services/ignition-coil-replacement) can cause this if it is beginning to fail, resulting in intermittent starting problems. A dirty or faulty mass air...