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Throttle Body Cleaning
#476501 June 24th 2011 11:12 am
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NateB Offline OP
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I'm cleaning the throttle body on my 94 conversion 5.2L. This will probably cover 92-03 Magnum engines. The throttle bodies on MPFI engiines are "dry", meaning only air passes through them whereas throttle bodies on TBI engines are "wet", meaning fuel atomizes in the venturi areas like a carburetor. Carbon deposits still build up on these MPFI throttle bodies. Anyhoo, the last time mine was cleaned was 5 years ago when I replaced the intake plenum gasket.

Let's get this party started. Like my 1980 John McEnroe look?
[Linked Image]
Disconnect all the wiring harnesses and cables from the throttle body and using a 1/2" socket, remove the 4 throttle body bolts. Doesn't look too bad from this angle.
[Linked Image]
Ewwwwww. But look at this side!
[Linked Image]
Gather your supplies. I like using CRC's TB cleaner, it's made for throttle bodies. I'm using an old toothbrush to clean the gunk but you can use a mild brush of your choice.
[Linked Image]
Buy a quality base gasket. I prefer Fel-Pro.
[Linked Image]
Use a T-25 Torx driver to remove the IAC Motor.
[Linked Image]
Holy toledo..look at the gunk on that IAC!! Clean your old one or buy a new one. Now is the time.
[Linked Image]
Ooooooo look how nice and clean those plates are! Look at that IAC shine!
[Linked Image]
[Linked Image]
All back together and the engine purrs like a kitten. Oh and now is great time to check the adjustment on the T.V. cable (kickdown cable). Refer to your service manual for proper procedures.
[Linked Image]


Nate Breece
Re: Throttle Body Cleaning
NateB #476510 June 24th 2011 11:35 am
Joined: Oct 2001
Posts: 28,125
Madman!
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Madman!
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Nice job! Now, what about the rest of that nasty looking engine grin


Ken Schwarz
Tricky Truckers, N.J.
Van Clan Plus One, Canada
Manse Vans, Finland
Rebel Vanners, N.J. "USA"
Toopa Sinner Tribe, N.C.

www.showvans.com

http://www.cardomain.com/ride/360991

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"Coolness ALWAYS trumps comfort"
Re: Throttle Body Cleaning
NateB #476539 June 24th 2011 3:28 pm
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Maniac
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Cool!


Windows- they're what make a van worth owning!
Re: Throttle Body Cleaning
Reed #476541 June 24th 2011 3:33 pm
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LOST SOUL
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LOST SOUL
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Looks good! Only thing I would recommend is wearing protective gloves when working with any chemicals. Brad

Re: Throttle Body Cleaning
Superbeast #476695 June 25th 2011 10:24 am
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NateB Offline OP
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Originally Posted by Superbeast
Nice job! Now, what about the rest of that nasty looking engine grin


After 180,000 miles it's allowed to look haggered. LOL!

This is the first time I've had the doghouse off of this van in almost a year. Air filter was still clean and everything else looked good. When I did the water pump, timing chain, intake and plenum gaskets, and valve cover gaskets in 2006 I did degrease the engine down a bit. That ol' 318 still runs great!




Nate Breece
Re: Throttle Body Cleaning
NateB #477018 June 27th 2011 1:17 am
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Great post.....


[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
Re: Throttle Body Cleaning
NateB #477338 June 28th 2011 11:57 am
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Well after 4 days I can say that the throttle response is much crisper than what it was. The engine would lag a bit when cold before the cleaning. Can't explain it...it just is.


I had to dial in my kickdown cable a bit more yesterday because the 1-2 shift was too fast. Now it's poifect!


Nate Breece
Re: Throttle Body Cleaning
NateB #663866 June 15th 2014 4:14 pm
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cannot kill a 318. they are very forgiving engines too! (by that i mean, like many gas engines, they aren't as picky about timing like a diesel is...ehh)

Re: Throttle Body Cleaning
NateB #663923 June 16th 2014 4:32 pm
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Festerus Vannimus
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Looks great! When you coming over to do the one on my 92 next ? Lol

If it helps get you here , I have Pizza and Dr Pepper . . . .


My van : 1989 Ford E-150 Econoline, currently named “WOLF-DEN II”


Founder & President of Sooner or Later United Truckers and PROUD TO BE A S.L.U.T. ! !
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