[gladams]

Check and see if the cat on that side is clogged or damaged. Climb under and hit the side of the cat with your fist and listen for a rattle. My 12 coyote would throw 302/304 code. Ford checked the misfires and said that the number 4 cylinder wall was scratched and scored. Engine was replaced and new motor had same exact codes. Passenger side cat was clogged. They wanted 1k to replace cat. I replaced both sides for 450$ and it runs great. Doesn’t hurt to check. Hope this helps.

 

[gladams]

You can try the spark plug fouler trick to fool the rear sensors. I had to do this to fool for the replacement of my cats. There’s a how to on YouTube.

 

[gladams]

I never got a code for my cat, only the misfire. Took two trips to ford to find out it was clogged. They never got a code either, they heard the rattle.

My passenger side cat.

New cats and H pipe

 

[gladams]

I have the MBRP XP series. That H pipe plus the cat back exhaust with their street mufflers. All 3”. And I like the sound.

 

[gladams]

Yes.no problems with sensors. Mechanic said he has only seen this a few times in his 20+ years as a mechanic for Ford. Sorry for the delay in response, I was having new wheels put on the wife’s ranger and I had to cut the grass before the rain comes.