How often should you replace your engine air filter? Welcome to Mercie J, where compassion and craftsmanship come together, I'm Rick Smith.

The short answer is when the filter gets dirty. The longer answer is, typically here in Arizona where we're at, it's a very dusty climate and if you're not going to check the air filter regularly, then you need to change it about once a year or 15,000 miles. That's about how often they accumulate enough dust and dirt to start restricting the air a little bit.

What causes brakes to squeak or grind? Welcome to Mercie J, where compassion and craftsmanship come together. I'm Rick Smith, Master Certified Technician.

So first of all it's kind of interesting to know that all brakes actually do squeak. The squeak is a high frequency vibration of the brake pad, kind of like a guitar string if you will. The vehicle manufacturers try to design that so it's actually outside of the human audible range.

Why does it cost so much to fix my car? Welcome to Mercie J, where compassion and craftsmanship come together, I'm Rick Smith.

So to help partially answer that question I thought I'd just show you a couple of jobs that are in the shop right now.

The vehicle owners concern on this 2006 Toyota Sienna was number one, the heater isn't blowing warm air. Number two, misfires and a check engine light, engine running rough. Number three, engine overheating.

Today we're working on an E-250 Ford van that has no power to the fuel pump. Welcome to Mercie J, where compassion and craftsmanship come together, I'm Rick Smith.

Now a number of vehicles have a fuel pump relay. This one does as well. The fuel pump relay however on this one is working perfectly fine so it's actually sending power back there.