2003 Dodge Ram 1500 4WD
4.7L V8 magnum
172,000 miles
Loss of horsepower and lack in acceleration which seems to lead to slightly late shifting.
Hearing a rushing air sound from under hood while accelerating.
No codes popping up
Can’t find any vac leaks
I’ve sprayed carb cleaner all over to try and check for vac leaks/change in idle but found nothing
Whatever the problem is it isn’t consistent.... sometimes it’s bad sometimes it’s mild

HELP!!!

no codes, i wouldn’t say it’s running smooth just because this issue is an all the time kind of thing but yes other than this everything else seems to be ok. I’ve been able to plow despite everything that’s going on even though i rather wouldn’t. I don’t really have the money to have anyone else look at it right this moment😑 clogged cat, failing brake booster and bad fan clutch are a few things that have crossed my mind just haven’t had the time to check anything out with all this money falling from the sky and power naps here and there...

That’s kind of what im leaning toward after looking some things up, i plan on looking into it tmrw morning before going out to plow. I pulled the fan clutch and fan clutch relay fuses to see what would happen... I’ll be honest i didn’t Really know what to look for but the fan starts pumping every time i start the vehicle and seems to always be on and pulling the fuses had no effect. I don’t know much about mechanics but I’m trying to learn. I don’t want to be that guy throwing parts at his vehicles forever

Reason i said anything about brake booster is because i believe when the issue is mild the brake pedal seems to be much more firm or tight i guess you could say. But same goes for gas pedal almost like there’s resistance somewhere (clogged cat?) and when the issue is real bad neither pedal feels “tight” or has much resistance. Plus the rushing air sound seems to be coming from right around the booster but can’t really be to sure what’s going on under the hood from drivers seat

I was told i don’t have an egr. I changed plugs Just after i first noticed the issue and have used a bottle of Seafoam. Other than that nothing really. Great idea I’m going to pull the o2 sensor and see what happens

So it did end up being my fan clutch. Crazy how the fan clutch was causing so many issues and my truck is running fantastic right now thanks for the input guys!