Cleaning throttle body

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Mar 30, 2007 | 01:47 PM

tweaked250r

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Cleaning throttle body

My truck is a 92 f140 with a 4.9 300. I want to clean the throttle body so it runs better however, I once took a one off a 5.8 and it had a tag on it that said "Do not clean with cemicals". I think because of the special plating it had on the inside? Anyways would it be ok to clean mine on the 4.9 with chemicals? Or is it not a good idea? Thanks.

Mar 30, 2007 | 01:56 PM

bassproguy07

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Joined: Aug 2005

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From: Katy, Texas

shouldnt have a problem with chemicals like carb cleaner or brake cleaner. dont use anything like wd40 on it though. clean it with carb cleaner, but let it dry for a bit before starting your engine.

Mar 30, 2007 | 02:09 PM

Talyn

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Joined: Oct 2003

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From: Ashland City, TN

Your not supposto clean them period.

I'm trying to find out what they coat the inside with still.

Mar 30, 2007 | 02:12 PM

bassproguy07

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From: Katy, Texas

why wouldnt you clean them?seems rediculous not to be able to clean a throttle body my budy cleans his on his chevy all the time

Mar 30, 2007 | 02:23 PM

Conanski

FTE Legend

Joined: Jun 2006

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From: Ottawa, Ontario

I have cleaned mine with carb cleaner many times.. never had a problem. There's no way to fix the idle bypass mechanism without loads of carb cleaner.

Mar 30, 2007 | 03:21 PM

andym

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Joined: Mar 2002

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From: Bonita Springs FL

They receive a special coating at the factory that prevents carbon build-up.

Works great, doesn't it?

Just clean it if it needs it and ignore the warning.

Mar 30, 2007 | 03:39 PM

jas88

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Joined: Feb 2002

Posts: 7,958

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From: Greater Austin, Texas

You don't want to use Brake Cleaner or Berryman's B-12 because they contain Acetone. That will strip off the coating for sure. You can do it, I have, and no catastrophy will result, you just have to clean it more often in the future. What you should use is "throttle body cleaner" and an old toothbrush. Valvoline's works particularly well for me.

WD40 isn't going to do it any harm IMO, it only contains kerosene, and not very much of it, but it probably isn't going to clean it very well, either.

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Mar 30, 2007 | 08:58 PM

Talyn

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Joined: Oct 2003

Posts: 17,799

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From: Ashland City, TN

Mine idles funny now i cleaned mine. so...

Mar 31, 2007 | 06:39 PM

#10

NeXtras

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Joined: Jan 2007

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they tell you not to lubricate and/or clean them cause they can get stuck in the open or cloded position. im not sure what exactly the coating is in the TB but i bet its to keep carbon from sticking where they dont want it... like in the mechanisms...

Mar 31, 2007 | 08:16 PM

#11

eco

Posting Guru

Joined: Jan 2006

Posts: 1,263

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From: The dark carnival

Does the 302 have the coating??

I had mine off and I did not see any warning. I did however clean it with a carb cleaner and a pressure washer w/ hot water and soap.