Q: Whining noise at 35 MPH

Without some additional symptoms, this is hard to say. If the car runs smoothly when warm, this would reflect a "cold start" problem with the engine. If the transmission shifts harshly either cold or hot, the transmission may need repair...

Hello there, thank you for asking about your 1993 Isuzu Pickup. It sounds like a bad ground in the instrument panel circuit. Looking at the wiring diagram, I see the AC heater control panel and instrument cluster share the same...

Hi there, thanks for writing in. On most imports and some domestic cars, there the AC blend door distributes the air to different vents when the option is selected. This component is controlled by an electric actuator. Sometimes the fuse...

The battery may not be able to hold a charge because if the battery is dead (https://www.yourmechanic.com/services/battery-is-dead-inspection). In order to check the charging system you will first have to have the battery charged and tested to see if battery needs...

Hello, and thank you for writing in. The vehicle is programmed to honk under certain circumstances. There is no way to stop the honking unless you change your behavior when using the key fob, and even then, there are honks...

Further diagnosis as to why the check engine light is on (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) should be done. A repeat code for the knock sensor may be caused by a wiring issue or even due to a faulty pcm (power control module). Odds...

Oxygen sensors are tested using an automotive scope or oscilloscope. In your circumstance, if there are more than 100,000 miles on the sensor, the sensor output should be verified on a scope. The mechanic should show you the output waveform...

Hello. Most of the time this is caused by the timing chain making noise in the engine. I will usually check the oil and replace it with the right oil and filter to see if it helps. A poor quality...

If you do not have a blown headgasket and have a new water pump and thermostat then you must have a blockage in parts of the radiator or the cooling fan or fan clutch is defective. Check fan clutch is...