Q: Why does my Mazda Protege suddenly revs high upon start up as if I were stepping on it?

Your car’s wipers provide you with the ability to see clearly out the windshield during inclement weather, as well as to operate the windshield washer system to clean the glass. Here’s how to use them: The ignition must be on....

First of all--leave the headlights alone. They work perfectly fine where they are. When you start buying those replacements kits, a lot of times they are made in China or cheaply made. They end up blowing fuses that don't work...

Hi there, and thanks for writing in. It's hard to give a specific answer without having any information regarding your exact make and model, but this problem in general sounds like something that should be diagnosed (https://www.yourmechanic.com/services/car-is-slow-to-accelerate-inspection) by a qualified...

Hello. When you get the P0421 code (https://www.yourmechanic.com/article/p0421-obd-ii-trouble-code-warm-up-catalyst-efficiency-below-threshold-bank-1-by-andrew-quinn), it usually means that you have a failing catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement). It is very common for converters to fail on this vehicle over time. Most of the time I use a scan...

Hi, thanks for writing in. The pulley bearing may be binding the engine and causing the rough idle problem. I recommend replacing the pulley and bearing then recheck the idle to see if running better or needs additional diagnosis. If...

Hello, thank you for writing in. If both headlights (https://www.yourmechanic.com/services/headlight-is-not-working-inspection) have gone out at the same time, its unlikely the issue is a bulb problem. You may want to start by checking the fuses first. There is also a relay...

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...

Hello, thank you for writing in. You cannot tighten a serpentine belt. There are two considerations to make. One, is that the belt stretches out over time, and will end up being too long to function correctly. In this case,...

Sealed ball joints that do not have a grease fitting are lubed for life and are not serviceable and you cannot lube them. These type of joints are greased from the factory and sealed.