Q: heater does not work

Hi! The cigarette lighter is on a fused circuit connected to the battery. The wiring for the socket uses thin wires on a low amperage circuit. Generally, too many devices hooked into the socket, or just one drawing more power...

It sounds as if your vehicle has possibly suffered damage to the steering system. If it was in an accident, it is possible there may have been damage done to the steering rack, which uses red transmission fluid in it's...

Hello, the engine is equipped with an electronic valve called an idle air control valve. The idle air control valve lets a metered amount of air into the engine at idle to have a comfortable idle and ensure the engine...

Hello. If you have misfire codes on all of these cylinders, then the problem is much more in-depth. Most of the time when this occurs on one side of the engine, it is because the timing belt is worn out...

The only sensor that will cause the RPM gauge to read incorrectly and cause a rough running engine is the crankshaft position sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-crankshaft-position-sensor), or its wiring and connector. Try and disconnect the crankshaft sensor connector located above the oil...

Hello there, many faults will cause your 2003 BMW 320i to run poorly on cold start and have a cylinder 4 misfire. You have done great in replacing the coil packs (https://www.yourmechanic.com/services/ignition-coil-replacement), plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), and vacuum pipe. Common faults would...

Hi there. On your transmission there is an actuator (solenoid) for the Overdrive clutch. The code is coming as P2701 (https://www.yourmechanic.com/article/p2701-obd-ii-trouble-code-transmission-friction-element-b-apply-time-range-performance-by-jay-safford) for the Overdrive clutch actuator (solenoid) not working and is your main cause of the transmission shifting issue. The...

Your car has an electronically controlled transmission. The strange behavior may be due to a bad switch on the column, or there may be some reason why the program doesn't want it to shift into Drive or Reverse. Maybe it's...

Hi there. Usually when the vehicle is hard to accelerate unless the RPM is high, it's a clear indicator of a damaged or worn out torque converter. It is also common for an obstruction of transmission fluid to cause issues...