On Tue, 29 Jul 2003 15:02:25 UTC "Ted S." <
[email protected]>
wrote:
> Thanks, everyone for your comments on this. I didn't really get an answer
> to the main question (is throttle body cleaning something they always
> suggest whether it is really needed or not), but the part about how to keep
> it clean myself looks worthwhile.
>
> I know I don't know much about car innards but am good mechanically
> otherwise. If it is not too much trouble, could someone point me to a
> picture (or explain) which is the throttle body and which is the air tube on
> the throttle body for step 2?
The air tube is the flexible hose about 3 inches in diameter that runs
from the air cleaner box to the top of the throttle body, which sets
on top of the inrake manifold. It's held onto the air cleaner box
with a clamp and onto the top of the throttle body by 3 small screws.
For cleaning, take it off and get it out of the way.
> And for step three, is that where you direct the spray...? Where the air
> tube was connected? And
> for "Allow the vehicle to load up with the cleaner to the point of almost
> stalling out", does that mean stop at this point and wait for the rough
> running to stop?
You want to spray 2 basic places: into the main bore, where the
butterfly valve that attached to the accelerator lives, and into the
idle air control valve openings. The throttle position sensor (and
the sensor for the auto xmission, if used) mount on the shaft that the
butterfly is mounted on, the IAC is the other gizmo that has wires
connected to it. The plunger on the IAC will gum up as well as the
port it fits into, so you sometimes have to pull the IAC off and clean
it specially, especially on some of the older ones. Open the
butterfly and look for a ridge on the wall of the bore where the
butterfly plate closes - mine had a build up of a good 1/8 inch when I
first got it that took scrubbing with cleaner and a tooth brush to
remove (I was surprised it even ran it was so gummed up!).
> Finally, how often should this be done? I don't notice any problems at this
> time even though it's been a while since the service dept said I needed it.
> And, if I clean it and then go in and they STILL suggest it (after looking,
> of course), is it something they can show me to prove it needs to be done?
I do mine about once a year, but I've got a fair amount of blowby with
155,000 miles on the clock. If it's really dirty, check more often
and just clean as needed. The need will be fairly obvious.
> Thanks again and, the more of the above questions that are answered, the
> better I will be able to do this.
If it looks pretty dirty, also check any other passages you see -
especially the one where the MAP sensor hose connects.
> "GMP News" <[email protected]> wrote in message
> news:[email protected]...
> > Ted,
> >
> > If you do in fact need the throttle body cleaned, www.allpar.com has a
> > procedure posted for doing just that. You have to spend a couple of bucks
> > on some throttle body cleaner and takes a little bit of your time. There
> > was a noticable difference when I performed this on my 2000 TJ, it was
> like
> > night and day.
> >
> > Below is the porocedure.
> >
> > Hope this helps,
> >
> > Greg
> >
>
> > 2.. Remove the air tube from the throttle body.
> > 3. With the engine at an idle, spray the entire contents of Mopar
> Combustion Cleaner, p/n 04318001, directly into the throttle body. Allow the
> vehicle to load up with the cleaner to the point of almost stalling out.
>
>
--
Will Honea <
[email protected]>
