Why you, yes YOU, need to clean your throttle body
 

Here's what an 82,XXX mile throttle body looks like:

Attachment 31669

Not so bad, but, check it out from the back. You know, the side your engine sees...:

Attachment 31670

And the intake port, itself:

Attachment 31671

That's less than 100K, folks. I don't know if it has anything to do with it, but I'd say about half of those have been highway miles, cruising around 2K rpm. Thats disgusting. It makes me scared thinking about how the insides of the cylinders and lifters must look. Hopefully they aren't that gunked up.

After cleaning:

Attachment 31672

As far as I dared stick my hand and rag in there:

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I didn't want to spray anything down in there, so I dampened a rag with some cleaner and then scrubbed around as best I could. I'm not exactly mobile up under the hood, so that's the best angles I could get. I let it dry out for about 20 minutes while I messed around with some other stuff, and then put it all back together. I promptly threw a CEL when I started it up. Don't forget to double check all your connections. Even though I swore I did, I guess I forgot to plug the IAT sensor back in. Easy fix, thankfully. The hardest part was getting the damn Hemi hat bolted back in correctly.

It is super simple to do: (2) 10mm bolts hold the Hemi hat on (even easier if you already have a CAI), (4) 8mm bolts hold the throttle body on. Don't forget to disconnect the Intake Air Temp sensor when you remove the hat, and the sensor on the throttle body, itself. Reverse the process to put it all back together. Took about 30-40 minutes, including cleaning, and that was because it was my first time doing it. Next time it will probably be about 10 minutes shorter, if not more.

Don't neglect this easy bit of maintenance. It's probably easier than changing your oil.

Hopefully this will keep people updated on the fact this is so necessary. Good post!

I already did mine throttle body clean when it hit 100,000 miles. Right now it has 120,000 miles so it won't be another 80,000 miles to clean it again.

Don't let that nasty run-off get into the motor of the TB.

Nope. Took great care to avoid that.

great update that will give me something to do @ 5am tomorrow that im sure needs done again

I have to admit mine was pretty funky this morning, throttle response is back to where it should be

The second pic is what mine looked like the first time (91K). Since then, not so much. :D

Glad you started this thread. I just performed a 100,000 mile service on my truck and the throttle body looked like that.

Mines looks like that every 80K or so when I clean them. Truth is I notice no difference in performance .