Q: Minimal front end knock

Transmission issues will often give you small signs that a trip to the shop is needed. The warning signs can be subtle shifting problems like a slightly delayed or harsh shift, sometimes even a delay before the transmission goes into...

If your car is equipped with a vehicle security system rather than the Nissan Vehicle Immobilizer system, it’s important to know a few things about how it works. When properly armed, the system will flash the car’s lights and honk...

Looks like your Toyota 4Runner is actually experiencing two different issues. Let us first start with the noise the 4Runner makes upon startup, that noise that goes away once you start driving. From my experience with working on Toyotas, and...

The smell of gasoline in the coolant is a sure sign of an internal engine problem. It may be a bad head gasket or even a crack in the engine. This engine in particular is known for head gasket failures....

The cooling fan clutch on this engine requires the hot air flowing across the radiator to lock up the clutch when it starts getting hot. Some of these vehicle's radiators have a leak, or flow problem, that will cause the...

Hello there, many different faults can cause your 2004 Hyundai Santa Fe to run poorly when cold. The most likely faults would be a stuck open thermostat, coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement), oxygen sensor (https://www.yourmechanic.com/services/oxygen-sensor-replacement), vacuum leak, or exhaust leak. A...

Hi, thanks for writing in. Common symptoms of a malfunctioning fuel pump (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pump) include sputtering at high speeds, loss of power during acceleration, loss of power to the vehicle while under stress, surging, and an engine that will not start....

Hello. If the oil level was low, then it will cause these codes (P0016 (https://www.yourmechanic.com/article/p0016-obd-ii-trouble-code-camshaft-position-a-camshaft-position-correlation-bank-1-by-jay-safford) and P0017 (https://www.yourmechanic.com/article/p0079-obd-ii-trouble-code-crankshaft-position-camshaft-position-correlation-bank-1-sensor-b-by-jay-safford)) to appear. The variable valve timing system on this vehicle is controlled with oil pressure so when the oil level is low...

You can start with the lowest octane rating available and see how well the vehicle performs. If the vehicle performs well without hesitation and has decent fuel economy, then you can stick with that octane rating. If you begin to...