Hey folks,

I've had an issue with a P0301 code, and I was wondering if my idle sounds normal for a 4.0L. Please take a listen and let me know.


Is that a misfire?

Also, should my fuel pump be that loud?

 

Get a can of starter fluid or use a spray bottle filled with plain water and squirt (on stream rather than spray) around injectors. If the sound smooths out then replace injector o-ring. Next, check 02 sensors.

The dirty rag kinda says 02 sensor but checking injector rings is quick and easy.

 

So does the idle definitely sound off to you?

The rag was already dirty by the way

 

bump