Popular questions

Hello. The symptoms you are experiencing can be caused by a wide variety of issues. If the symptoms appear to come and go then it may be possible that the symptoms are electrical in nature. A few things I would...

Hi Dave, Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition...

The cover gets torn off by parking stops, and hitting road debris. A technician would need to inspect it to see if it can be reattached, or if it needs to be replaced. I recommend having a mechanic, such as...

Hi Jennifer. Thanks for contacting us tonight. If the power steering system is not working correctly, we can't recommend driving the vehicle to a repair shop - even if it's just a 10-minute drive. If you'd like to have a...

If the check engine light is not flashing it is OK to drive the car with the particular code you have noted during the limited interval you are describing. A flashing check engine light would signify constant misfiring and you...

Hello. This transmission issue is a serious problem, because eventually the transmission will stop working. The transmission could stop working in the next couple of months or longer. It is possible that there is a problem with the valve body...

Hi, thanks for writing in. The AC blower motor or relay may be bad and would need to be checked. The radio you may have a blown fuse or a problem with the radio itself. If you would like help,...

The headlights on these vehicles are controlled by the lighting control module on the left side of the dash. This module is controlled by the light switch which tells it to turn on or off. The control switch will need...

This is a common issue for this generation of Highlander. Toyota released a technical service bulletin (TSB) related to cam housing oil leaks. The associated TSB (T-SB-0321-08) covers the inspection, diagnosis and repair of the cam housing oil leak. However,...

The quality of the fuel in the vehicle may possible trigger an O2 sensor to produce false readings, although this is very rare and not normal. As you may know the [oxygen sensors]((https://www.yourmechanic.com/services/oxygen-sensor-replacement) which are part of your emissions system...

Hello and thank you for your question. The problem lies within the proportioning valve in the brake system. The valve could be plugged up with debris in the system making the valve stick. If the proportioning valve is okay and...

The bearing is contained within a unitized hub assembly that is bolted to the knuckle. The entire assembly is replaced (i.e., bearing with hub). A calibrated torque wrench has to be used because the axle retaining nut has to be...

There are multiple factors that can affect your gas mileage. Some of these factors would include: how clean the air filter is, how well fuel can flow through the fuel filter. If the fuel filter is doing its job, the...

Hello there, thank you for asking about your 1993 Pontiac Grand Prix. The pump is self priming. If the red Oil Pressure Warning Light is not on, there is sufficient oil pressure. When engines are assembled, the oiling system is...

If your steering wheel is difficult to turn and causing your vehicle to go in a different direction than intended, you may have an issue with your rack and pinion. The rack and pinion is what is acted upon by the...

You already listed many causes of the problem with broken bolts and vacuum lines and fuel pressure vacuum line causing vacuum leaks and high fuel pressure at lower engine speeds. I suggest repairing all the problems you have listed when...

A lack of acceleration could be caused by multiple issues. Such as failing spark plugs, failing spark plug wires, failing ignition coils, clogged fuel filter, failing fuel pump, clogged injectors, or possibly even a mechanical issue such as damaged valves...

I am not a fan of run-flats, because I work on those things. They may run flat, but you'd still get flat tires all the time and will have to replace them. They cost a fortune to replace and they...

The service engine soon light is equivalent to a check engine light. Whenever there is a fault, from a bad engine sensor for example, a fault code is stored in the engine control unit, or ecu. When that happens, the...

Hi - I suspect the cooling fan has seized or shorted. This is creating enough load to blow the fuse. Disconnect the cooling fan, replace the fuse, and retry starting the engine. Since the engine is starting the first time...

If you are having an electrical system problem that is causing the lighting and other systems to have erratic issues then you need to check the alternator wire connections on the back of the alternator for loose or bad connections....

This seems to be a fairly common problem with the 2013 Optima. It may be caused by incorrect calibration of the Steering Angle Sensor or it may be related to a mechanical issue with the suspension or tires. I would...

The rubber bond in the harmonic balancer assembly can sometimes separate and as a consequence the crankshaft pulley can get out of plane relative to all of the other driven pulleys and accessories. Similarly, it is possible that a pulley,...