The twin butterflies on my TB are gunked up. I was going to use some TB/Intake Cleaner and ran across some info that the ford throttle bodies supposedly have a coating on the inside and ur not supposed to use anything on it or who knows what happens. Some TB's actually have a sticker saying do not clean. Anybody heard of this? Is it true, and if so wtf do i use to clean the butterflies?
Throttle body-do not clean?
- Thread starter spederman
- Start date
Take a rag with some carb cleaner and clean them up. I sprayed mine down so I'm not sure what the big issue is.
BurningRubber
10 Year Member
- Dec 6, 2004
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tag4car
Member
done it on 4 totally different ford engines with no prob, used the spray u mentioned and everything
trinity_gt
10 Year Member
FWIW, and it may not be much, there may be some validity to this. I used to have a Ford Probe with Mazda's 2.5L V6. Those engines had a very thin elastomer coating on the inside of the throttle body that was used to seal the throttle plate in the closed position. If this elastomer was removed, it could result in the engine RPM hanging and the idle becoming unstable as the removed elastomer, taken out by the solvent, allowed air to bypass the idle control solenoid. It wouldn't surprise me if this practice was more widespread among manufacturers.
What benefit do you really gain by cleaning a film of gunk from the throttle plates? If you were to flowbench a throttle body with and without gunk on the plates, I doubt you'd see an increase in CFM... Personally, I'd leave it. If the thing is really gunked up to the point where flow is being compromised in any way, you've got other issues to address.
[Edit]Further to this, my 2002 Ford service manual for my Mustang states, on page 303-04B-5, the following:
"CAUTION: The throttle body bore and plate area have a special coating and cannot be cleaned."
What benefit do you really gain by cleaning a film of gunk from the throttle plates? If you were to flowbench a throttle body with and without gunk on the plates, I doubt you'd see an increase in CFM... Personally, I'd leave it. If the thing is really gunked up to the point where flow is being compromised in any way, you've got other issues to address.
[Edit]Further to this, my 2002 Ford service manual for my Mustang states, on page 303-04B-5, the following:
"CAUTION: The throttle body bore and plate area have a special coating and cannot be cleaned."
streethorse
15 Year Member
When I first took my FRPP TB out of the box I thought that it was used
allready since there was black stuff on and around the butterfly.
But yeah its a coating they spray on it.
allready since there was black stuff on and around the butterfly.
But yeah its a coating they spray on it.
trinity_gt
10 Year Member
myponyrocks
I have more billet on the Stang than most women ha
- Apr 18, 2004
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I can confirm both Accufab and BBK TBs have the coating. Accufabs was a very small ammount, BBKs look like a blind guy applied it with a 4" paintbrush
trinity_gt
10 Year Member
I can confirm both Accufab and BBK TBs have the coating. Accufabs was a very small ammount, BBKs look like a blind guy applied it with a 4" paintbrush
:SNSign:
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