MAZDA B4000 ENGINE

When I Start My Truck It Will Not Go In To Gear. When I Turn The Truck Off It Will Go In To Gear

I Turn The Truck On And The Starter Continues To Crank, Even If I Turn The Key Off. I'm Pretty Sure It's The Key Ignition Cylinder...

I Have Replaced The O2 Sensor On The Drivers Side Of The Exhaust. Have I Replaced The Wrong Sensor? I Am Willing To Attempt To Replace The...

My Idle Is About 1500 While In Park. Is That Too High? If So, How Do I Adjust The Idle?

I Changed A Badly Cracked Muffler Two Days Ago. Later That Night Driving My Check Gauges Light Came On For A Few Seconds, Off For A Few...