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Throttle Body Cleaning (with pics)

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  #1  
Old 12-22-2008, 06:08 PM
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Default Throttle Body Cleaning (with pics)

I got really bored today and decided to clean my throttle body. It looked dirty when I looked through the butterfly valve and I was right. there was carbon and varnish all over the inside of the throttle body and the intake (which i cleaned what i could reach aswell). How did it get so dirty? I expected a little but there was alot of varnish and carbon on there. The truck only has a little over 50,000 miles on it and I've taken excellent care of it. This was my first time cleaning the throttle body and will definitley not be my last.


Heres some before and after shots (crap quality iphone pics and I dont know how to resize):

Before:
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After:
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Old 12-22-2008, 06:11 PM
Jimmeh Jimmeh is offline
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Looks WAY better.

Which reminds me that I need to do the same.
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Old 12-22-2008, 06:22 PM
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Looks good, what did you use to clean it with? Also, about how long did it take from taking the TB off, cleaning it, and reinstalling it?
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Old 12-22-2008, 06:31 PM
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It was VERY easy to do. I have a CAI so I didnt have to take the hemi hat off.
I just loosened the clamp from the CAI to the throttle body and then unlugged the IAT sensor. I then used an 8mm socket wrench to take loose the four bolts holding the throttle body on and unhooked the sensor on the top, disconnecting it from the intake. It only took me about 7 minutes to get the throttle body off. i then used a wire brush to clean the heavy carbon off and carb cleaner on an old tshirt to get the varnish off. I got the tight spaces with carb cleaner on a Q-tip. WHATEVER YOU DO DO NOT SPRAY CARB CLEANER INTO OR USE COMPRESSED AIR ON THE THROTTLE BODY. The eleectronics are not sealed and are easily damaged. installation was the reverse of the removal. Just torque the bolts to 105 in. lbs or 8.75 ft. lbs.
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Old 12-22-2008, 06:34 PM
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Oh yeah, total time was about 35 minutes. 15 for removal/installation, and 20 for cleaning (plus about 15 if you clean the intake).
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Old 12-22-2008, 06:50 PM
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Good info, I may do this next weekend. I'm sure it's filthy and I also need to replace my EGR. Thanks for your input
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Old 12-22-2008, 06:57 PM
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No problem. Let me know if you have any more questions.
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Old 12-22-2008, 08:48 PM
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fyi.... our tb's have a special coating on them you just removed it using carb cleaner I do not recommend using any solvents on the tb use a clean rag and wipe it clean
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Old 12-22-2008, 08:48 PM
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thanks for the post, i might try and do this this week when i put my intake in, as well as a oil change.
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Old 12-22-2008, 09:20 PM
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Quote:
Originally Posted by fgee View Post
fyi.... our tb's have a special coating on them you just removed it using carb cleaner I do not recommend using any solvents on the tb use a clean rag and wipe it clean
What is the coating made of? And what does it do? I wouldnt think it would make much of a difference....
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Old 12-22-2008, 09:29 PM
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The coating is like a Teflon that is supposed to keep the crap from sticking to it, but it doesn't really work too good.
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Old 12-23-2008, 02:30 AM
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good i'm not the other one from louisville ky who knows a lot about our trucks
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Old 12-23-2008, 02:43 AM
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Use brake cleaner on TB's only.
Keep the TB electronics uppermost, to let any excess solvent drain AWAY from the electronics with gravity, as it will destroy them. TB's are VERY expensive!
Do not spray solvent into the TB. Rather, take a clean rag with the solvent to the TB. That way, you control how much solvent is on the TB.
Do not use wire brushes or anything like that to clean off the TB.
The brake cleaner WILL take care of it and only use a soft bristle tooth brush on any stubbon deposits, to loosen them.
Do not force open the TB blade. The actuator at the end of the TB controling the blade is easily damaged.
Open the TB blade slowly and only just enough, to get at the edges of the blade to remove the deposits built up there.
When you bolt it all back up, do a TB calibration.
Switch the ignition to the on position. Do not crank the engine, but press fully down and let fully up 5 times, in 1 second intervals on the accelerator pedal. Then switch the ignition off.
After this, start the truck and your TB is now calibrated for WOT.
Finally, always stuff a clean rag into the intake whilst the TB is off the engine. That will stop anything from falling into the intake.
Hope all this helps?
AL.
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Old 10-08-2009, 11:23 AM
dodgequad05 dodgequad05 is offline
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I wouldn't use brake cleaner I think that is also corrosive as well. They do sell just TB cleaner at the auto parts store. After I clean the TB manually and put everything back together, I will start the vehicle and disconnect a vaccum hose (usually EGR line) somewhere before the TB, closer the better. Then I'll spray the cleaner in the intake while the engine is running so that it will clean the rest of the intake from the TB to the combustion chamber. I will be attempting this for the first time on my recently purchased dodge 1500, but usually I have to manually open the TB to keep the engine from dying so not sure how I'm going to handle that on the non-mechanicial TB. May have to use one of those steering wheel locks that I have lying around somewhere to hold the pedal down.
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Old 10-08-2009, 01:21 PM
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I just cleaned mine yesterday with brake cleaner and it worked great. I used a nylon and a brass detail brush. And ive never heard of the TBs having a special teflon coating.
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Old 10-08-2009, 01:21 PM
 
 
 
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04, 1500, 2000, 2004, body, clean, cleaning, dakota, dodge, hemi, location, montana, picture, ram, stratus, throttle

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