Q: cylinder 7 misfire

This sounds like something is broken in the column. A defective lock cylinder, or a seized ignition switch. It would have to be disassembled to see the problem. A qualified mechanic from YourMechanic can come out and diagnose why your...

Hello. During it's operation, the air conditioning system will come across a large amount of condensation. This condensation gathers around the evaporator and runs off through a drain. You may see water dripping from the car on a hot summer...

Your car uses a shift interlock that keeps it from coming out of park unless the brake pedal is pressed. If the brake light switch fails or if the locking solenoid fails then this will occur. The most common failure...

Engine code P0401 on your Honda Accord indicates that there is low flow to the EGR valve. The repair for this is to remove the EGR valve and, using a special tool, cleaning the passages of the EGR tube. In...

This sounds like a very tricky problem to diagnose. Did you check the fuel pressure with the fuel pressure regulator disconnected? Perhaps there isn't enough fuel pressure at full throttle, or the fuel pressure regulator leaks and floods it out...

I would not recommend adding octane booster to regular gasoline to try to make premium. The octane booster has various effectiveness and may or may not improve the octane (https://www.yourmechanic.com/article/which-type-octane-of-gas-is-recommended-for-my-car) from 87 to 91+. Octane booster is usually used in...

It sounds like your Mercedes Benz E500 may have a starter issue (https://www.yourmechanic.com/services/starter-replacement). If everything works as far as the radio and lights go, the battery is most likely performing as it should. If the battery is okay and the...

Check to see if any diagnostic trouble codes have been stored and use a real time scanner to check the response of the throttle position sensor and oxygen sensors. The throttle position sensor sends a reference voltage to your power-train...

A faulty temperature gauge should be ruled out (direct temperature measurement would accomplish that) but, based on the "sequence" you are describing it does sound like real overheating. Other causes of overheating, not included in your list, are trapped air,...