Q: 2007 Lexus IS 250 needs an alternator.

Hi there: What you're describing could be several issues ranging from clogged fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement) or dirty fuel filter (https://www.yourmechanic.com/services/fuel-filter-replacement) to electronics related with a problem with the ignition coil or a sensor; even a vacuum leak. If you turn...

Hello. If your vehicle overheated (https://www.yourmechanic.com/article/what-causes-a-car-to-overheat), shut off, and will no longer start, then it may be possible that the overheating caused an issue. The fact that the engine still cranks is a good sign that the overheating did not...

The water pump and thermostat was replaced for what I can only assume was a leaking water pump. Once this work was done then the mechanic should have run the vehicle until the thermostat opens to completely fill the cooling...

An A/C system needs to be put into a vacuum to boil off any moisture in the system. As pressure drops, the boiling point of water decreases. Water boils at a lower temperature in Denver as opposed to Los Angeles....

Hi there. As there are numerous possibilities for your vehicle shaking upon acceleration. Diagnosing the problem is difficult without driving the vehicle. A few possibilities are, an engine misfire (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) which should be recognized by the computer and in turn,...

Hi there. This sounds like the bearing on the reverse gear in your transmission has failed and is making the gear wobble around. This causes the shifter to move around and then the gear will make the shifter pop back...

Technically, least cost operation is attained if engine idling (at stops) does not exceed 60 seconds and, indeed, some studies put the threshold as low as 10 seconds. Certainly 60 seconds is a conservative estimate. This is why "start-stop" features...

Hello. There are a lot of things that can cause this. If vehicle was having trouble getting to that speed then it may be a transmission issue or it can be something like a catalytic converter that is failing. If...

Hi there. There are three different types of sensors and solenoids that will cause a transmission to not shift. 1. --- Transmission Position Sensor (https://www.yourmechanic.com/services/transmission-position-sensor-switch-replacement) 2. --- Vehicle Speed Sensor (https://www.yourmechanic.com/services/speed-sensor-replacement) 3. --- Shift Solenoids (https://www.yourmechanic.com/services/car-does-not-shift-from-park-to-drive-inspection) All three types of...