docsprague

Truck makes a ratcheting sound while engine is under a load and sounds kind of like a ping. Certainly behaves like one expect, if you put it in 4x4, it goes away. Make me think it is the typical 4x4 problems with the actuators. But it is not as bad of a noise or frequent like others on the forum. Anyone experience this with the noise only under a load? Makes me wonder if when the motor is under a load if it looses some vacuum causing the noise?

Edit: Found this post https://www.f150forum.com/f4/everyth...en-some-20611/ and I posted the same question there.