Originally Posted by Lupin398
I have a bit of a problem. Apparently a few sensors went up in my '94 F-150 XL 4.9(Straight 6), the codes it gave were O2 sensor(replaced) MAP sensor(replaced) and the Knock Sensor. Every single autoparts store around here does not even carry a Knock sensor for my truck, and when I searched online the only thing I could find were Knock sensors for 5.0 liter engines. Do straight-six engines even use Knock Sensors?
I do not know if the I-6 takes a knock sensor, or not.
I found reference to one on this site, but it is for a V8.
They do not list a knock sensor for the I-6 engine.
Here is a description of what a knock sensor is/does:
Knock Sensor Description
A quality Knock Sensor is more important than ever thanks to today’s increasing gas prices. Your Engine Knock Sensor enables your vehicle to obtain the optimum combination of timing and fuel/air mixture to generate power and efficiency and that means less wasted gas. In addition to robbing you of fuel economy and performance a faulty Knock Sensor can cause expensive damage to your engine. Remember, the Knock Sensor keeps fuel from detonating in the cylinder … exploding rather than quickly burning as it should. If not replaced a faulty Knock Sensor can quite literally cause hundreds if not thousands of dollars in damage.