sluggish

[DDean]

What can make a 4.7 more sluggish than what it already is, and recommended fixes? I've been plagued for a while with sluggish and bogged down feeling primarily in lower gears. Not really sure what else to say, wife pulled a trailer with a 4 wheeler on it today and she said going uphill it was struggling

 

[natedefelice]

I gave mine a complete tune up and have zero issues pulling my zero turn (2k with trailer) and filling the bed with mulch or soil.

 

[DDean]

Define complete tune up

 

[DDean]

My first guesses I wanna take a look at the throttle position sensor, idle air control valve, O2 sensors, and fuel injectors. Any good way to really test these? I don't want to be just throwing parts at it if I don't need to. Throttle body has been cleaned and has no gunk in it

 

[Izzyb47]

Complete tune-up would be cleaning the entire AI and removing and cleaning the throttle body, remove all sensors from the throttle body and clean the idle airsensor with maf sensor cleaner. Sparkplugs be sure to neverseize. and then see where that leaves you.