Q: How Does a Car's Timing Belt Work?

Hello. Thanks for writing in about your 2000 Lexus GS400. There are various reasons for a car not to start. The best way to determine what component is causing this is by having a technician scan the VSC (vehicle stability...

Unfortunately, it sounds like you have an internal transmission problem that will require the transmission be rebuilt or replaced. A transmission that won't go into any forward gear almost always indicates an internal mechanical problem as opposed to an electrical...

Trouble code P0430 (https://www.yourmechanic.com/article/p0430-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-2-by-spencer-clayton) is for a catalyst on the drivers side. The sensor after the converter may be bad and not responsive enough or the catalyst itself may be bad. The catalyst (https://www.yourmechanic.com/services/catalytic-converter-replacement) should be replaced if the converter...

It is the normal operation of the coolant in your cooling system to expand when it gets hot. The purpose of the overflow tank is simply that. The radiator cap is designed to allow coolant to pass into the overflow...

Hello. A failed catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement) will cause symptoms within the engine that can then effect the transmission. Unfortunately the symptoms it causes tend to be related to shifting issues. As far as the jolt you felt, it would only...

Hi there. Check the slave cylinder on the clutch system and see if it's leaking. If there is no leak, then operate the clutch pedal and have someone watch the slave cylinder. If the clutch fork is moving all the...

Generally, the check engine light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) comes on when something fairly serious is going on with the vehicle. This can happen for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic...

It sounds like you may have potentially got some of the critical sensors wet, which can cause them to send erratic signals to the vehicle's computer system. For example, if a crankshaft position sensor gets wet or is otherwise unable...

Hey Carlos. The oil pan bolt is made out of aluminum for some reason and is a standard right-direction thread, however, it's very small and delicate - so it can be hard to remove. You should see a directional arrow,...