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  #1  
Old 4th April 2008
tag_addict tag_addict is offline
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Default Cleaning throttle body

Im convinced my rough gear shifting is due to a dirty TB or else busted tranny/engine mounts.

So I want to clean the TB...

Anyone have a detailed walthru on how to do it with pics?

WIS is good but Id prefer to have a nice detailed pic by pic guide to do this

Should I buy a new seal before I go down this road or do i need to even remove it to clean it?

Thanks guys, did use the search function came up blank on cleaning one for a 9-3SS.
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  #2  
Old 4th April 2008
brianl703 brianl703 is offline
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I don't have any pictures but here's a walkthrough:

1)Remove the black cover from the top of the engine.

2)Remove the large black hose from the throttle body. You will need to use a long screwdriver to loosen the clamp, then you'll need to work it off.

3)Now the throttle body is exposed. You can clean it (I use a rag) and move the butterfly by hand.

4)You can use a rag to soak up any excess cleaner at the bottom of the intake manifold under the throttle body, but this isn't really necessary.

5)Put everything back together after you are done and start the engine. You may need to push the gas pedal to the floor so any residual cleaner in the intake manifold is cleared out faster.

It's not much different than cleaning any other throttle body out there except the lack of a throttle cable or linkage to pull on to open it while you're cleaning.
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  #3  
Old 7th April 2008
Cosmicflash Cosmicflash is offline
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Great explaination!

Or do the same with the car running and spray in while opening the TB.

Quote:
Originally Posted by brianl703
I don't have any pictures but here's a walkthrough:

1)Remove the black cover from the top of the engine.

2)Remove the large black hose from the throttle body. You will need to use a long screwdriver to loosen the clamp, then you'll need to work it off.

3)Now the throttle body is exposed. You can clean it (I use a rag) and move the butterfly by hand.

4)You can use a rag to soak up any excess cleaner at the bottom of the intake manifold under the throttle body, but this isn't really necessary.

5)Put everything back together after you are done and start the engine. You may need to push the gas pedal to the floor so any residual cleaner in the intake manifold is cleared out faster.

It's not much different than cleaning any other throttle body out there except the lack of a throttle cable or linkage to pull on to open it while you're cleaning.
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  #4  
Old 7th April 2008
brianl703 brianl703 is offline
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Quote:
Originally Posted by Cosmicflash
Great explaination!

Or do the same with the car running and spray in while opening the TB.
If you do that you might cause a misfire code. Not a big deal as long as you are expecting it and you can clear it or take to Autozone to let them clear it.
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  #5  
Old 7th April 2008
Cosmicflash Cosmicflash is offline
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Quote:
Originally Posted by brianl703
If you do that you might cause a misfire code. Not a big deal as long as you are expecting it and you can clear it or take to Autozone to let them clear it.
Never had that problem.

I've also noticed on these cars, the 2.0T and 2.8T, that the misfire has to be really bad and go on for a while before the CEL would on.
Spraying into the intake would only be a few seconds at a time so I can't imagine a problem.
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  #6  
Old 7th April 2008
brianl703 brianl703 is offline
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I've caused misfire codes on two different cars by spraying throttle body cleaner into the intake while the engine is running. One of them is my Saab.
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  #7  
Old 8th April 2008
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I tried once a while ago but could not get that hose to come off of the throttle body (and yes, I did loosen the hose clamp all the way ). How the heck did you all get yours off? I've got a whole can of Power Foam waiting for me in the garage...
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  #8  
Old 8th April 2008
brianl703 brianl703 is offline
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It's a tight fit so you'll probably have to use a screwdriver to pry it off.
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  #9  
Old 13th April 2011
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anyone happens to have a step by step picture guide to clean the TB?
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  #10  
Old 13th April 2011
breezy85 breezy85 is offline
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the instructions up in the post are pretty straightforward- you need a T25 torx screw tool to get the cover off and a flat head screw driver to unscrew the hosed clamp holding the large black hose in the throttle body (located right near the dipstick... impossible to miss- it's the largest hose going right into the block). technically you can get the torx screws off with a flat head screwdriver, but you'll strip them a bit, so i'd recommend a t25 torx tool.

pick up a can of CRC throttle body cleaner and spray liberally, with intermittent scrubbing with a toothbrush and wiping away residue. the trickiest part is getting the clamp off only because its tight quarters to get a screwdriver into. you might have to hold open the butterfly valve with one hand and scrub with the other to get it thoroughly cleaned.

I cleaned my TB after I ran a BG44k treatment through a tank of gas and my throttle body was nearly spotless. Never hurts to keep it clean though. I'd recommend doing a BG44k treatment while you're at it to thoroughly clean your injectors. I noticed smoother idling and less hesitation with acceleration after I did the treatment.

I wish i had cleaned my MAF and BSR air filter at the same time, but looks like that's a little project for this weekend.
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  #11  
Old 16th April 2011
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Managed to find CRC TB cleaner but it states that do not use on turbocharged engine as per the link below. Any other TB cleaner that I can use?

http://www.crcindustries.com/faxdocs/tchdta/290.pdf
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  #12  
Old 16th April 2011
tomk17 tomk17 is offline
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Valvoline makes a carb and throttle body cleaner and it's available at Advance Auto Parts for under $3. Not sure if it has the same precaution however. Thinking about doing mine and also getting the CRC MAF cleaner to clear the MAF like others have suggested and done here.
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  #13  
Old 16th April 2011
gso_saab gso_saab is offline
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I used the Valvoline throttle and carb cleaner, and it worked great. From what I can tell, it doesn't have a "no turbocharger" warning.

Getting the hose off is the only hard part, but it's unexpectedly hard. I need to pry it off with a flat-head screwdriver.

I was surprised by how nasty the throttle body and plate were at only 32,000 miles. Maybe the cleaning will even out the car's idling.
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  #14  
Old 17th April 2011
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Disconnect the -battery cable as well to ensure T8 dosent get any hint of a signal from the TB. And the screws that hold covers on are T30s.
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  #15  
Old 20th April 2011
brianl703 brianl703 is offline
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Quote:
Originally Posted by j-y View Post
Managed to find CRC TB cleaner but it states that do not use on turbocharged engine as per the link below. Any other TB cleaner that I can use?

http://www.crcindustries.com/faxdocs/tchdta/290.pdf
The reason they say not to use it on a turbocharged engine is that there are people who might try spraying it through the turbocharger...which will not happen if you follow my directions above.
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  #16  
Old 21st April 2011
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what about spraying WD40? Will that work?
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  #17  
Old 21st April 2011
gso_saab gso_saab is offline
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Nope, don't use WD-40. That's basically a lubricant. You need a cleaner that will dissolve the nasty deposits.
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  #18  
Old 22nd April 2011
brianl703 brianl703 is offline
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You could use Seafoam Deep Creep. It's like WD40 but actually has some cleaning ability. It is, actually, the same as regular Seafoam but in a spraycan.

Quote:
Deep Creep® works well for cleaning all throttle bodies. Deep Creep® is safe for all coated throttle bodies because Deep Creep® won’t harm Teflon or clear coatings used on some applications. Deep Creep® cleans carbon and will lubricate bushings in the throttle shaft while you clean. The can will spray in any position for hard to reach areas.
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  #19  
Old 7th October 2013
sannitig sannitig is offline
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Heat gun to get it off....Heat gun to put it back on. Makes it so easy
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  #20  
Old 7th October 2013
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Okay start off

1. disconnecting the battery

2.take off the TB

3.clean it with Tb cleaner you get from autozone for like 5$

People suggesting cleaning it with wd40 or while the car is on is amazing.
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