I've never cleaned a throttle body before but after talking to some people, they've mentioned it is a good thing to do even though my car runs perfect but it has 172,000Km. Is this true? Has anybody done it?

I figure you just take off the intake pipe and spray some throttle body cleaner while the throttle is open and when it is closed. Should I run the engine during this? I am a bit worried that the throttle cleaner might damage the O2 sensor and Cat.

 

I would just pop the TB right off - easy to do, you don't even have to disconnect most of the vacuums/plugs but you can. THere is just enough room to wiggle the TB off the bolts. Then you can wipe it down properly. I don't think spraying some junk in there is going to do too much. I was suprised at how dirty mine was - pretty thick covering.

 

Buy a new TB gasket. Unscrew 4 screws, unplug all vacuum and cooling lines. Unplug TPS ( be careful not to break it) and you have a TB in your hands. Then spray it with good carb cleaner and enjoy dirt going out... Clean it until it's like a new one
Scrap the rest of old TB gasket from mani and TB and put a new gasket. Install all lines, plugs and so on. After that you will have to set your idle as it will be higher for sure.
Easy job for 1 hour.
pentaq

 

First: Disconnect the Battery! I have always been one of those guys that does not disconnect the battery because i know what i am doing but in this case it is extremely important to do so in order to reset the idle position. (found that out the hard way)

Second: Disconnect air hoses and electrical components from the intake manifold (throttle body) and disconnect the air hose from the intake side as well and rotate the hose clockwise so it is out of your way. (you can completely take it off if you want, but it is not necessary)

Third: Remove the 4 hex bolts and the throttle wire (it is not electrical, it is the wire that connects to the accelerator and makes you GO!) Then remove the throttle body from the intake manifold.

Fourth: Get some carb/ throttle body cleaner and a tooth brush and go to town on that dirty son of a B. You can also spray some into the intake manifold and wipe it out with a paper towell if that is gunked up too.

Fifth: Place the throttle body back onto the intake manifold and put the 4 bolts back in. Reconnect the accelerator wire (it wraps around the bottom and seat the little ball on the end in place. Reconnect the air hoses and electrical components, you are almost done!

Sixth: reconnect the battery and with the hood open turn the ignition on to run position (do not start the engine yet) and you will hear a buzzing noise comming from the throttle body. It is aligning itself.

Seventh: Turn the ignition off and then start your car. if your idle is still messed up you should turn your car back off and disconnect the battery again and do step six over

I found these instructions on some volkswagen forum , i'm pretty sure they should apply to honda or any other make.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22srb &raquo;</TD></TR><TR><TD CLASS="quote">
Sixth: reconnect the battery and with the hood open turn the ignition on to run position (do not start the engine yet) and you will hear a buzzing noise comming from the throttle body. It is aligning itself.</TD></TR></TABLE>

Hmm, the throttle body independently realigns itself? I don't think i've ever heard of anything like this on a honda. Sounds like some weird drive-by-wire shat to me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hank the retard &raquo;</TD></TR><TR><TD CLASS="quote">Hmm, the throttle body independently realigns itself? I don't think i've ever heard of anything like this on a honda. Sounds like some weird drive-by-wire shat to me.</TD></TR></TABLE>

lol yea my mechanically controlled prelude throttle body makes no such noise.....furthermore those wv instructions do a prelude little good, as the idle control is seperate from the throttle body on our cars, and as long as you were getting a good seal before and you reassemble everything correctly and get a good seal when youre done (on the throttle flange) then the idle wont change at all, no need to disconnect the battery


why you would ever think those instructions should apply to any old vehicle is beyond me.....thats like using a v8 firing order on your 4cyl