Popular questions

The powertrain control module (PCM) takes inputs from dozens of sensors. It then uses this information to control outputs such as fuel delivery and emissions equipment. If the PCM detects a problem anywhere in the system it will illuminate the...

Hi there - the "boiling after shutoff" symptom is evidence of excess engine heat which is not being radiated by the radiator. Most likely, the "sealant" you added to the cooling system prior, is biting you back. The leak sealant...

Te problem most likely exists in the power window motor/regulator assembly if the fuse is good. The fuse should be checked first, and if the fuse is good, the door panel will need to be removed to check the condition...

Hello, thanks for writing in. The computer will go into a failure mode and may not allow the electronic throttle to open if it detects a major computer or sensor fault. There can be many possible failures that will cause...

If you have a lack of power, it is not a good idea to put highway mileage (high RPMs) on your vehicle. It can clog your fuel injectors and damage your engine. There are two types of catalytic converter damage....

Going downhill? That's interesting for this. Normally, they get problems when you are going uphill. If it's hesitating going downhill and it's not doing it when it goes uphill, unfortunately on that, if you have automatic transmission, it can be...

Hi there. The serpentine or drive belts have nothing to do with the timing belt on the car. It depends on the tensioner that was installed, either the drive belt tensioner or the timing belt tensioner. I recommend seeking out...

Hello. If the alternator is not charging the battery then it may be failing. There are other problems that can occur such as bad battery connections or a failing battery cable. If the car has the wrong battery in it...

If you have oil all over the engine bay, it's possible that there's just a valve cover gasket leak which is a fairly common repair done on many vehicles as they get older. As far as the tires it's possible...

Hopefully, the issue is a blown fuse, in which case, you can check your fuses and make the repair yourself. Otherwise, you may need to take your Audi to the dealership, as convertible top repair often requires the use of...

The fuel pump relay in the engine relay box powers the fuel pump to run, but the fuel pump relay is turned on and off by the engine control module on pin 19 brn/wt wire grounding the circuit. You will...

Hi there. Unfortunately, without seeing what repairs were made and how the ignition switch was installed, it's hard to give you advice on how to get the steering column unstuck. You might want to have one of our mobile mechanics...

There are many things that can cause the fuel mileage to go down or be lower than what others are getting. The most important thing is to not use performance parts like filters or sensors. These only increase the power...

The lack of heat being generated by your system may indicate a clogged or leaking heater core. The heater core is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then...

First, I would check the inertia switch. This switch opens on perceived impact and prevents power from getting to the fuel pump. There should be continuity across the switch at all times. If the switch is good, I would check...

Generally, a failed head gasket will leave evidence in one of four areas. The oil needs to be checked for a milky residue -- as this would indicate coolant leaking into the oil. The coolant needs to be checked to...

Hello. It is perfectly fine to rev the engine in your car as long as you are not over doing it or holding it at a high rpm for long periods of time. If the engine is functioning normally and...

The issue with your lights is the ballast resistor is not working properly. Ballast resistors are designed to monitor the amount of voltage to the headlights. If the lights are dimming out and then not working, then the ballast resistor...

The most common cause for the lights to stay on is the brake light switch. I recommend that you have a mechanic, such as one from YourMechanic, come by and run an inspection to diagnose your brake light issue.

Your concern sounds like your serpentine belt. After time corrosion and/or rust can build up in the grooves of the pulleys and the belt causing such a sound to be produced. The tensioner should also be inspected for proper operation,...

Those Infinitis are electronic nightmares. All of that AC system is run by the computer. If you jump it and it works, watch my video. I even have a video "how to fix your AC system cheaply." Just get...

Hi there. The relay to the windows could have stopped working. Also, the flasher or relay could have stopped working as well. Since these are two different electrical circuits, it could be possible that both relays quit, but more an...

The rear view camera provides excellent visibility when you are reversing your vehicle. This system operates with a camera above your license plate, which displays an image on your display. The rear view camera will automatically turn on when the...

Hello there. When major sensors like the O2 sensors are replaced, and are followed by acceleration and performance issues, it is typically caused by poor electrical connections to the sensors or the ECU needing to be cleared of previous stored...