Throttle Body
Throttle Body Cleaning
Senior User
Joined: Apr 2003
Posts: 132
Likes: 1
From: Oregon
Throttle Body
Good info in this thread--thanks to you guys I successfully cleaned my first throttle body today! My truck still pings a little but I think this was more due to load of gravel in back and having AC on. 
Just curious, but my manual says to change plugs every 100,000 miles but I have heard it isn't a bad idea to change them around 60,000 miles. What do you think? I have also never used a torque wrench to install spark plugs and haven't stripped anything yet or had problems. Does one really have to use a torque wrench?
Just curious, but my manual says to change plugs every 100,000 miles but I have heard it isn't a bad idea to change them around 60,000 miles. What do you think? I have also never used a torque wrench to install spark plugs and haven't stripped anything yet or had problems. Does one really have to use a torque wrench?
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Throttle Body
I pulled the intake tube off my 3.0L FFV today, and the MAF &
throttle body were spotless!!! It just turned over 76K miles, and
I have always used the OEM paper type of filter, never a K&N!!
throttle body were spotless!!! It just turned over 76K miles, and
I have always used the OEM paper type of filter, never a K&N!!
Posting Guru
Joined: Dec 2003
Posts: 1,006
Likes: 0
From: Coastal North Carolina
Just a little note, the lining is teflon (no- stick stuff on frying pans) On my can of TB cleaner it says "Teflon Safe" i would look for this label just to make sure you dont clean it off. But in any case, you would just have to clean it more.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
I cleaned the TB on my 98 with either carb cleaner or brake cleaner, I can't remember which. It wasn't until it was clean that I could see the warning label. Oh well, I will just have to watch for a buildup. The inside of the intake manifold is absolutely filthy. Carb manifolds don't get filthy like this one is.
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
IMO, a clean throttle body - even with the protective coating faded/removed by using a harsher cleaner than what is recommended - has to be better than a filthy TB with the protective coating completely coated over by a layers of accumulated dirt, carbon, etc.
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Junior User
Joined: May 2002
Posts: 71
Likes: 0
From: Columbus,Ohio U.S.A.
Have an 01 Ranger, 3.0 with automatic, 2 wheel drive. I have never cleaned the throttle body. The truck is just short of 100,000 miles. I have used K&N filters for the last 19 years. This is my truck used for business, I fill up at the end of the day for the start of the next day, around 8 to 13 gallons a day. The engine is in great shape, no leaks, no oil consumption (change every 5,000 mi.). The conditions are highway and off road, ie: rock quarries, construction sites, etc.
I assume most of the dirty throttle bodies are short mileage (per day) situations?
Just some input from my end.
I assume most of the dirty throttle bodies are short mileage (per day) situations?
Just some input from my end.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
A lot of the build up in the TB comes from the crankcase blow-by that is usually introduced into the system from the breather tube from the valvecover to the air intake assembly. This is quite common on higher mileage vehicles.
Oh, by the way, My 88 5.0 Stang has had a K&N filter for over 150,000 miles and I have never had to clean the MAF or TB. The K&N filters only soil them when too much oil is put on them. I also run one in my 2001 F150 and I have had no problems either.
Oh, by the way, My 88 5.0 Stang has had a K&N filter for over 150,000 miles and I have never had to clean the MAF or TB. The K&N filters only soil them when too much oil is put on them. I also run one in my 2001 F150 and I have had no problems either.
Junior User
Joined: May 2002
Posts: 71
Likes: 0
From: Columbus,Ohio U.S.A.
I agree with you Jimmy, the proper maintenance of the K&N filter is the key. I have no engine wear, that is no oil consumption and no blow by. All my vehicles are high mileage in three to three and a half year periods. Buy a new filter with a new truck, period. Throttle bodies, etc no problems.
JEY
JEY
New User
Joined: Nov 2005
Posts: 24
Likes: 0
Guy's,
Looked in my throttle body, lots of crud!
Question, do you remove the throttle body to clean it? If so, is there a gasket to replace?
Looks kind of tough to clean with the thing mounted to the intake manifold.
Looked in my throttle body, lots of crud!
Question, do you remove the throttle body to clean it? If so, is there a gasket to replace?
Looks kind of tough to clean with the thing mounted to the intake manifold.
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
No need to remove the TB, I suppose you could if you wanted, but the method most people use is to keep the engine running while applying short blasts of carburetor/throttle body cleaner to the dirty parts. The stuff get's sucked into the combustion chambers and burned out the exhaust. You're probably gonna have to keep one hand on the throttle lever so that you can increase RPMs while the stuff is getting pulled in and burned. The process obviously loosens up the coke and carbon in the TB as well as the upper intake, to some degree. Expect some smoke out the tailpipe.
Along the same lines, you might want to think about performing another 4.0L intake "cleansing" procedure while you are at it, that way you'll know for sure that the whole air intake system on the engine has been treated.
https://www.ford-trucks.com/forums/s...hreadid=100739
You can substutute a similar product (i.e., SeaFoam) for the Motorcraft Tune-up Cleaner PM-3.
Along the same lines, you might want to think about performing another 4.0L intake "cleansing" procedure while you are at it, that way you'll know for sure that the whole air intake system on the engine has been treated.
https://www.ford-trucks.com/forums/s...hreadid=100739
You can substutute a similar product (i.e., SeaFoam) for the Motorcraft Tune-up Cleaner PM-3.
Last edited by Rockledge; Jan 22, 2006 at 10:03 AM.
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