Heavy_Metal

Youre most welcome. Thats what were here for. Thank all you guys/gals out there who make wrenching our trucks so much less painful.

EBC-150

Also clean the MAF and throttle body, and check/replace the air filter. There is also an accelerator pedal relearn process that seems to help some people.

jrmongi

start with the plugs i did mine a few days ago they where in about 110000miles it can be a job but if you do it right and take your time you won't have any issues there are a lot of threads on here as how 2 do i learned how to from my uncle he is a ford service manager il try to attach a pic

jrmongi

here are my plugs i removed they caused a lot of issues for me

powerranger262

That plug change looks like it went pretty well, if you ask me.

jrmongi

i agree i had similar issues and some that i noticed the plugs fixed most of them

SmokedFx4

I wouldn't start with the plugs, even though with how many miles she has it could be the problem. but, I had the same issue with bogging down or loss of power above 45 mph. I cleaned my MAF with proper cleaner & replaced my foam seal for the air filter.

I noticed my foam was half gone & once I replaced the foam with a rubber material & made sure it had a good seal. My issue has been gone for about a year now.

So yeah, plugs would be a smart thing to do but $5.00 for some rubber & 15 minutes of you time is far easier & cheaper thing to try. Or at least look at the foam seal as most people notice that its no longer there anyways.
Just my .02¢

redfishtd

We always advise baseline get spark circuit tip top first . Hers is beyond the pale . If it's not right nothing else is going to matter much .

Heavy_Metal

I agree as i had the same symptoms but have a K and N. The boots and springs should help performance more than plugs.......should.