Q: Pcv valve

Your truck has a helpful tool called the Uplevel Message Center. This message center logs many of your vehicle's functions and displays them for you to use. There are many features to see in the Uplevel Message Center. To navigate...

Hello. A lot goes on under the hood and many of the components can reach high temperatures. Any fluid leaks coming into contact with these hot components can burn the fluids and cause an odor. An example would be a...

The tach needle was put back on wrong when you installed it. The tach needle shaft must have moved once you pulled the needle off. The shaft can be moved very easily by just tapping on the gauge. What you...

Thanks for writing in about your Chevrolet HHR. From what you've described you'll need to check the shift cable to see if the cable is attached to the transmission and bracket. It may have come loose when you lifted the...

System too lean means that the fuel mixture has moved beyond the ability of the feedback system to compensate. One thing that can cause that is an air leak that enables air to enter the intake system without passing first...

First, check fuses (https://www.yourmechanic.com/article/how-to-check-fuses-by-rocco-lovetere) for ignition and the engine management computer (ECU). Do you hear even the slightest "click" from the starter area? If so, the starter solenoid (https://www.yourmechanic.com/services/starter-replacement) has failed. Given the age of your Toyota, the ignition switch...

Hi there: Anytime front end components are faulty, they should ALWAYS be replaced in pairs. Example; if you've got a bad driver side strut, the passenger side needs to be replaced as well. The reason for this is safety; and...

Hi there: We're not quite certain what you're asking; however, the P0255 OBD-II trouble code (https://www.yourmechanic.com/article/p0255-obd-ii-trouble-code-injection-pump-fuel-metering-control-a-intermittent-cam-rotor-injector-by-valerie-johnston) is typically triggered by dirty fuel filter, clogged fuel filter, defective fuel pump or open electrical connectors or sensors. The best way to have...

Hello - in addition to the components which deliver spark on command (which you have already replaced), are the components which determine when the spark should be delivered (crankshaft and camshaft position sensors). A bad fuel mixture will cause misfire...