So ive been dealing with my broken intake man for awhile now and the f150 is not my only vehicle so i turned what would be a normal 5-6 hour job into a 6-7 months of the truck sitting until i got the time to fix it...I finally got a new manifold for it and installed it, put everything back together and didnt do what i should of (plugs/air filter etc...) and now its idling/running kind of rough...Not too bad but it is shaking the motor and steering wheel...Instead of posting ANOTHER rough idle thread i did a search and came up with could be problems of the rough idle and just want to know if anyone can suggest anything other than: new plugs, fuel filter, air filter, clean the TB, clean maf, fresh fuel and thats all i could put together with the search i did....Am i missing something or did i answer my own question? Also i did an oil change/new cops just before it sat for the 6 mo. 2001 5.4... Thanks

 

That should cover it pretty well.

 

Ok, thanks. Yea the gas tank was near empty all that time also so i probobly got some condensation in there too....Hopefully all that stuff and a full fresh tank of fuel will fix it....Also can i remove the IAC from the TB and clean it or does it have to be replaced if a code shows up for it? (I dont have any codes yet)

 

What brand COPs did you put on it?

Phil

 

Global I didnt really notice the shaking before it sat this long with those new cops...

 

I only asked because my truck sits a lot and I had a couple of them go bad just from sitting!

Phil

 

Injectors may have gummed up. Might want to run some kind of cleaner through them...
It's worth trying to clean the IAC and make sure the plunger works freely and isnt sticky. After its clean, give it a quick blast of WD and work it around a bit with needle nose. If cleaning doesn't help it (it normally does) then replace it.

 

The gas is bad. Or bad enough. New Fuel filter and some fresh petrol would be first.

 

Really? Thats weird...Thanks.
Just some injector cleaner in a bottle or? Can i use TB cleaner to clean the IAC also? Thanks for the help.
Yea, thats what i was thinking also. Im gonna try fresh gas first. Thanks.

 

Use WD-40 to clean the IAC.

 

Oh ok cuz i use STP TB cleaner for the TB. Thanks So i just unbolt it from the tb and spray it in from that way where it meets the tb?

 

Yeah, remove it. There is 2 holes, inside that is a plunger looking thing. Spray all that out and make sure the plunger moves freely. They hang up a bit with carbon build up.

 

Alright. Thanks for the help.