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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 07-15-2004, 11:57 PM   #1 (permalink)
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Alright basic question... Does the throttle body really get dirty??? I mean that dirty that taking it apart and cleaning it gives you a noticeable gain? And if so where can I find directions on how to clean it.
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Old 07-16-2004, 07:26 AM   #2 (permalink)
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Just remove the hose to the throttlebody and start cleaning it with WD40.

Btw if it was really dirty you can feel that the trhrottle response is better when cleaned it well..

I did it last evening. Runs very smooth now
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Old 07-16-2004, 10:22 AM   #3 (permalink)
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It does get very dirty. Every month or so you'll find there is a build-up of some really oily black greasy stuff. I clean it out with a tooth brush.

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Old 07-16-2004, 10:35 AM   #4 (permalink)
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hey
anyone have a pic of what to look for when opening the hood ?
thanks
Q
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Old 07-16-2004, 11:22 AM   #5 (permalink)
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here is a picture of it, remove the clamp from the intake hose and you'll see it

in the picture I have everything removed because I'm trying to get to my Idle Control Valve at the moment.
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'93 325i 5 Speed
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Old 07-16-2004, 11:22 AM   #6 (permalink)
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'93 325i 5 Speed
-Clutch Stop
-Window Tint
-2 12&quot; MTX subs
-Debaffled Airbox
-16&quot; Double Spoke Rims
-OEM Clear Corners and Tails
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Old 07-16-2004, 11:23 AM   #7 (permalink)
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Are you guys sure it's okay to take wd40 and spray it all over the inside of your throttle body?
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Old 07-16-2004, 11:33 AM   #8 (permalink)
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If you're not comfortable using wd-40, you could use Brake Parts Cleaner, or b-12 Chemtool. That stuff is awesome.

The brake parts cleaner costs about $1.50/can from the autoparts store.

hope this helps.
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Old 07-16-2004, 12:17 PM   #9 (permalink)
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Doesn't Gum-out make a throttle body cleaner? It's prbably the same things as card cleaner though.
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Old 07-16-2004, 12:18 PM   #10 (permalink)
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Originally posted by wulley1@Jul 16 2004, 12:57 PM
Doesn't Gum-out make a throttle body cleaner? It's prbably the same things as card cleaner though.
I believe so.
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Old 07-16-2004, 12:26 PM   #11 (permalink)
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In my oppinon, I wouldn't recommend using WD-40 to clean the throttle body. I work on jets in the Navy and we use Isopropyl Alcohol for that type of cleaning. It evaporates quickly and won't leave any residue like the WD-40 would.
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Old 07-16-2004, 12:27 PM   #12 (permalink)
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that would be my concern, too.
I would just stick with the Brake Parts Cleaner or B-12 Chemtool. Evaporates fast, no residue.
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Old 07-16-2004, 01:52 PM   #13 (permalink)
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IPA is good stuff, but does leave a slight residue. I work for a semiconductor company and we usually clean tools with acetone, then IPA, followed by methanol. When finished, any dirt or oils is washed away and everything is 100% partical free
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Old 07-16-2004, 02:01 PM   #14 (permalink)
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When you clean the throttle body do you go inside? Like open up the flap and spray in there or just spray the flap and clean it?
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'93 325i 5 Speed
-Clutch Stop
-Window Tint
-2 12&quot; MTX subs
-Debaffled Airbox
-16&quot; Double Spoke Rims
-OEM Clear Corners and Tails
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Old 07-16-2004, 11:06 PM   #15 (permalink)
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dont mean to change the subject, but if you replace it with a Dinan one. do you get any mayor gains in performance considering my car is 92 325i pretty much stock(chip).
And buy the way how do u clean it just the flaps or inside to?
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